Merge branch 'staging' into core-updates

67 files changed, 1282 insertions, 613 deletions

diff --git a/Makefile.am b/Makefile.am
index ec1e0285ea..00277b5b72 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -489,9 +489,8 @@ check-system: $(GOBJECTS)
 	   -e '(@@ (run-system-tests) run-system-tests)'	\
 	   $(top_srcdir)/build-aux/run-system-tests.scm
 
-# Public key used to sign substitutes from hydra.gnu.org & co.
+# Public keys used to sign substitutes.
 dist_pkgdata_DATA =				\
-  etc/substitutes/hydra.gnu.org.pub		\
   etc/substitutes/berlin.guixsd.org.pub		\
   etc/substitutes/ci.guix.gnu.org.pub		\
   etc/substitutes/ci.guix.info.pub
diff --git a/doc/contributing.texi b/doc/contributing.texi
index 6770fae222..e00634eed4 100644
--- a/doc/contributing.texi
+++ b/doc/contributing.texi
@@ -281,8 +281,7 @@ Once your package builds correctly, please send us a patch
 (@pxref{Submitting Patches}).  Well, if you need help, we will be happy to
 help you too.  Once the patch is committed in the Guix repository, the
 new package automatically gets built on the supported platforms by
-@url{http://hydra.gnu.org/jobset/gnu/master, our continuous integration
-system}.
+@url{@value{SUBSTITUTE-SERVER}, our continuous integration system}.
 
 @cindex substituter
 Users can obtain the new package definition simply by running
@@ -893,7 +892,7 @@ changes).  This branch is intended to be merged in @code{master} every
 2.5 months or so.
 @end table
 
-All these branches are @uref{https://hydra.gnu.org/project/gnu,
+All these branches are @uref{@value{SUBSTITUTE-SERVER},
 tracked by our build farm} and merged into @code{master} once
 everything has been successfully built.  This allows us to fix issues
 before they hit users, and to reduce the window during which pre-built
diff --git a/doc/guix.texi b/doc/guix.texi
index 888be1521f..33a3fbff5a 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -3134,7 +3134,6 @@ also result from derivation builds, can be available as substitutes.
 @node Official Substitute Server
 @subsection Official Substitute Server
 
-@cindex hydra
 @cindex build farm
 The @code{@value{SUBSTITUTE-SERVER}} server is a front-end to an official build farm
 that builds packages from Guix continuously for some
@@ -3186,12 +3185,6 @@ Then, you can run something like this:
 # guix archive --authorize < @var{prefix}/share/guix/@value{SUBSTITUTE-SERVER}.pub
 @end example
 
-@quotation Note
-Similarly, the @file{hydra.gnu.org.pub} file contains the public key
-of an independent build farm also run by the project, reachable at
-@indicateurl{https://mirror.hydra.gnu.org}.
-@end quotation
-
 Once this is in place, the output of a command like @code{guix build}
 should change from something like:
 
@@ -9611,7 +9604,7 @@ their store with others, who can then use it as a substitute server
 When @command{guix publish} runs, it spawns an HTTP server which allows
 anyone with network access to obtain substitutes from it.  This means
 that any machine running Guix can also act as if it were a build farm,
-since the HTTP interface is compatible with Hydra, the software behind
+since the HTTP interface is compatible with Cuirass, the software behind
 the @code{@value{SUBSTITUTE-SERVER}} build farm.
 
 For security, each substitute is signed, allowing recipients to check
diff --git a/etc/guix-install.sh b/etc/guix-install.sh
index a0777c8bfe..aa95cb4e20 100755
--- a/etc/guix-install.sh
+++ b/etc/guix-install.sh
@@ -104,7 +104,7 @@ chk_require()
 
     gpg --list-keys ${OPENPGP_SIGNING_KEY_ID} >/dev/null 2>&1 || (
         _err "${ERR}Missing OpenPGP public key.  Fetch it with this command:"
-        echo "  gpg --keyserver pool.sks-keyservers.net --recv-keys ${OPENPGP_SIGNING_KEY_ID}"
+        echo "  wget https://sv.gnu.org/people/viewgpg.php?user_id=15145 -qO - | gpg --import -"
         exit 1
     )
 }
@@ -362,13 +362,11 @@ sys_enable_guix_daemon()
 }
 
 sys_authorize_build_farms()
-{ # authorize the public keys of the two build farms
+{ # authorize the public key of the build farm
     while true; do
-        read -p "Permit downloading pre-built package binaries from the project's build farms? (yes/no) " yn
+        read -p "Permit downloading pre-built package binaries from the project's build farm? (yes/no) " yn
         case $yn in
-            [Yy]*) guix archive --authorize < "${ROOT_HOME}/.config/guix/current/share/guix/hydra.gnu.org.pub" &&
-                         _msg "${PAS}Authorized public key for hydra.gnu.org";
-                   guix archive --authorize < "${ROOT_HOME}/.config/guix/current/share/guix/ci.guix.gnu.org.pub" &&
+            [Yy]*) guix archive --authorize < "${ROOT_HOME}/.config/guix/current/share/guix/ci.guix.gnu.org.pub" &&
                        _msg "${PAS}Authorized public key for ci.guix.gnu.org";
                    break;;
             [Nn]*) _msg "${INF}Skipped authorizing build farm public keys"
diff --git a/etc/substitutes/hydra.gnu.org.pub b/etc/substitutes/hydra.gnu.org.pub
deleted file mode 100644
index 6db597ed4d..0000000000
--- a/etc/substitutes/hydra.gnu.org.pub
+++ /dev/null
@@ -1,6 +0,0 @@
- (public-key 
-  (rsa 
-   (n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
-   (e #010001#)
-   )
-  )
diff --git a/gnu/local.mk b/gnu/local.mk
index d3ace6891d..da5262dcf6 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -908,6 +908,7 @@ dist_patch_DATA =						\
   %D%/packages/patches/guile-relocatable.patch			\
   %D%/packages/patches/guile-rsvg-pkgconfig.patch		\
   %D%/packages/patches/guile-emacs-fix-configure.patch		\
+  %D%/packages/patches/gstreamer-buffer-reset-offset.patch	\
   %D%/packages/patches/gtk2-respect-GUIX_GTK2_PATH.patch	\
   %D%/packages/patches/gtk2-respect-GUIX_GTK2_IM_MODULE_FILE.patch \
   %D%/packages/patches/gtk2-theme-paths.patch			\
@@ -1264,7 +1265,6 @@ dist_patch_DATA =						\
   %D%/packages/patches/rust-1.25-accept-more-detailed-gdb-lines.patch \
   %D%/packages/patches/rust-bootstrap-stage0-test.patch		\
   %D%/packages/patches/rust-coresimd-doctest.patch		\
-  %D%/packages/patches/rust-1.30-gdb-llvm.patch			\
   %D%/packages/patches/rust-reproducible-builds.patch		 \
   %D%/packages/patches/rxvt-unicode-escape-sequences.patch	\
   %D%/packages/patches/scalapack-blacs-mpi-deprecations.patch	\
@@ -1368,7 +1368,6 @@ dist_patch_DATA =						\
   %D%/packages/patches/wavpack-CVE-2018-6767.patch		\
   %D%/packages/patches/wavpack-CVE-2018-7253.patch		\
   %D%/packages/patches/wavpack-CVE-2018-7254.patch		\
-  %D%/packages/patches/webkitgtk-sans-gstreamer-gl.patch	\
   %D%/packages/patches/weechat-python.patch			\
   %D%/packages/patches/wicd-bitrate-none-fix.patch		\
   %D%/packages/patches/wicd-get-selected-profile-fix.patch	\
diff --git a/gnu/packages/admin.scm b/gnu/packages/admin.scm
index 3d8c247f57..411be40f5b 100644
--- a/gnu/packages/admin.scm
+++ b/gnu/packages/admin.scm
@@ -2220,19 +2220,19 @@ a new command using the matched rule, and runs it.")
 (define-public di
   (package
     (name "di")
-    (version "4.47")
+    (version "4.47.1")
     (source
      (origin
        (method url-fetch)
        (uri (string-append "https://gentoo.com/di/di-" version ".tar.gz"))
        (sha256
-        (base32 "0zlapxlzjizwzwa8xwrwibhcbkh0wx7n74gvjpp6wlwq7cgiq0xm"))))
+        (base32 "1bdbl9k3gqf4h6g21difqc0w17pjid6r587y19wi37vx36aava7f"))))
     (build-system gnu-build-system)
     (arguments
-     `(#:tests? #f                      ; obscure test failures.
+     `(#:tests? #f                      ; obscure test failures
        #:phases
        (modify-phases %standard-phases
-         (delete 'configure)
+         (delete 'configure)            ; no configure script
          (add-before 'build 'setup-environment
            (lambda* (#:key outputs #:allow-other-keys)
              (setenv "CC" "gcc")
diff --git a/gnu/packages/algebra.scm b/gnu/packages/algebra.scm
index 95189401f7..7e66e42f0a 100644
--- a/gnu/packages/algebra.scm
+++ b/gnu/packages/algebra.scm
@@ -331,7 +331,7 @@ precision.")
 (define-public giac
   (package
     (name "giac")
-    (version "1.5.0-57")
+    (version "1.5.0-61")
     (source (origin
               (method url-fetch)
               ;; "~parisse/giac" is not used because the maintainer regularly
@@ -343,7 +343,7 @@ precision.")
                                   "source/giac_" version ".tar.gz"))
               (sha256
                (base32
-                "08c93knsisbk9dkyyrignw0wvqbr1sa5czlvk5l307ahxbbmqncf"))))
+                "050vzpqq77fhky32sbisc0ysimgp60xjv39q7y45jkaabdkmclwh"))))
     (build-system gnu-build-system)
     (arguments
      `(#:modules ((ice-9 ftw)
diff --git a/gnu/packages/audio.scm b/gnu/packages/audio.scm
index b8dbc2f00a..eff4edeb59 100644
--- a/gnu/packages/audio.scm
+++ b/gnu/packages/audio.scm
@@ -3701,7 +3701,7 @@ library.")
 (define-public faudio
   (package
     (name "faudio")
-    (version "19.06.07")
+    (version "19.07")
     (source
      (origin
        (method git-fetch)
@@ -3710,7 +3710,7 @@ library.")
              (commit version)))
        (file-name (string-append name "-" version "-checkout"))
        (sha256
-        (base32 "1w37qp279lgpyvslwz3wlb4fp0i68ncd411rqdlk5s71b1zz466n"))))
+        (base32 "1wf6skc5agaikc9qgwk8bx56sad31fafs53lqqn4jmx8i76pl0lw"))))
     (arguments
      '(#:tests? #f                      ; No tests.
        #:configure-flags '("-DFFMPEG=ON")))
diff --git a/gnu/packages/base.scm b/gnu/packages/base.scm
index 63c22017e7..0a82592a3a 100644
--- a/gnu/packages/base.scm
+++ b/gnu/packages/base.scm
@@ -1177,15 +1177,15 @@ command.")
 (define-public tzdata
   (package
     (name "tzdata")
-    (version "2019a")
+    (version "2019b")
     (source (origin
              (method url-fetch)
              (uri (string-append
-                   "https://www.iana.org/time-zones/repository/releases/tzdata"
+                   "https://data.iana.org/time-zones/releases/tzdata"
                    version ".tar.gz"))
              (sha256
               (base32
-               "0wlpqm4asvi0waaz24xj20iq40gqfypmb4nldjhkfgm09bgnsdlh"))))
+               "0r0clnlslwm15m1c61dinf1fi9ffgl6aipng7i7yryfwj0n0kn85"))))
     (build-system gnu-build-system)
     (arguments
      '(#:tests? #f
@@ -1231,11 +1231,11 @@ command.")
     (inputs `(("tzcode" ,(origin
                           (method url-fetch)
                           (uri (string-append
-                                "http://www.iana.org/time-zones/repository/releases/tzcode"
+                                "https://data.iana.org/time-zones/releases/tzcode"
                                 version ".tar.gz"))
                           (sha256
                            (base32
-                            "1x9z8fpgnhzlsnps0hamb54ymaskjab7ys9m4i4gpk9hpiig2fc7"))))))
+                            "0vbmswvv3li25s31shyllq5v24449lxnrki9hr043nipjd09sirf"))))))
     (home-page "https://www.iana.org/time-zones")
     (synopsis "Database of current and historical time zones")
     (description "The Time Zone Database (often called tz or zoneinfo)
@@ -1258,7 +1258,7 @@ and daylight-saving rules.")
      (source (origin
               (method url-fetch)
               (uri (string-append
-                    "https://www.iana.org/time-zones/repository/releases/tzdata"
+                    "https://data.iana.org/time-zones/releases/tzdata"
                     version ".tar.gz"))
               (sha256
                (base32
@@ -1267,7 +1267,7 @@ and daylight-saving rules.")
        `(("tzcode" ,(origin
                      (method url-fetch)
                      (uri (string-append
-                           "http://www.iana.org/time-zones/repository/releases/tzcode"
+                           "http://data.iana.org/time-zones/releases/tzcode"
                            version ".tar.gz"))
                      (sha256
                       (base32
diff --git a/gnu/packages/bioconductor.scm b/gnu/packages/bioconductor.scm
index 92f2e4f3ab..29dac5b0f1 100644
--- a/gnu/packages/bioconductor.scm
+++ b/gnu/packages/bioconductor.scm
@@ -2915,14 +2915,14 @@ to multiple hypothesis correction.")
 (define-public r-dose
   (package
     (name "r-dose")
-    (version "3.10.1")
+    (version "3.10.2")
     (source
      (origin
        (method url-fetch)
        (uri (bioconductor-uri "DOSE" version))
        (sha256
         (base32
-         "0ab7mgj42fg6608qkciyqivr1n8s8r5ibvp0z3jfclrnyx6cl0w1"))))
+         "06jm1mnfd92s84f21562vsmj6jfkravfqf4lcxx2lk7s4ll66znj"))))
     (properties `((upstream-name . "DOSE")))
     (build-system r-build-system)
     (propagated-inputs
@@ -3406,14 +3406,14 @@ type and symbol colors.")
 (define-public r-genomicscores
   (package
     (name "r-genomicscores")
-    (version "1.8.0")
+    (version "1.8.1")
     (source
      (origin
        (method url-fetch)
        (uri (bioconductor-uri "GenomicScores" version))
        (sha256
         (base32
-         "17bd61icfycc61b5dij1968h026w7vfd9miwdcbppak1j6s08idq"))))
+         "0xgv5h6hwr4p2p05z8vzhivy97gfirm4rj1ihb5c8fhgc5vp85dy"))))
     (properties `((upstream-name . "GenomicScores")))
     (build-system r-build-system)
     (propagated-inputs
@@ -4749,14 +4749,14 @@ annotations.")
 (define-public r-rsubread
   (package
     (name "r-rsubread")
-    (version "1.34.2")
+    (version "1.34.4")
     (source
      (origin
        (method url-fetch)
        (uri (bioconductor-uri "Rsubread" version))
        (sha256
         (base32
-         "0bsrw61wcav0q22c5m6gr0vn1f3c3ld8gxj730wcab6dj196z6q3"))))
+         "1230p8nsakifmpsqfiaj8rpm7npa8ab903mfjmayfa71n6yzvcbs"))))
     (properties `((upstream-name . "Rsubread")))
     (build-system r-build-system)
     (inputs `(("zlib" ,zlib)))
diff --git a/gnu/packages/bioinformatics.scm b/gnu/packages/bioinformatics.scm
index 4f4d3d9839..8c140a1d24 100644
--- a/gnu/packages/bioinformatics.scm
+++ b/gnu/packages/bioinformatics.scm
@@ -6960,14 +6960,14 @@ ungapped alignment formats.")
 (define-public r-systempiper
   (package
     (name "r-systempiper")
-    (version "1.18.1")
+    (version "1.18.2")
     (source
      (origin
        (method url-fetch)
        (uri (bioconductor-uri "systemPipeR" version))
        (sha256
         (base32
-         "1k57zyzagd7g7wl38l3cn9csylykxcllbfvyq7dz8pvihgkn0ssi"))))
+         "18s5vpmw766pm64w7bwwfgpsv9yzhwclf0ya1rpqz8qslw7bbdjf"))))
     (properties `((upstream-name . "systemPipeR")))
     (build-system r-build-system)
     (propagated-inputs
@@ -7467,13 +7467,13 @@ names in their natural, rather than lexicographic, order.")
 (define-public r-edger
   (package
     (name "r-edger")
-    (version "3.26.4")
+    (version "3.26.5")
     (source (origin
               (method url-fetch)
               (uri (bioconductor-uri "edgeR" version))
               (sha256
                (base32
-                "013glavk6a1wpyq3q35k343bdp6rf27w30q59i4kf47rp3i37g15"))))
+                "0iba4krz30dx5b0s89n5cfkwn64867s7vmvvfqms9lbcr4kj439m"))))
     (properties `((upstream-name . "edgeR")))
     (build-system r-build-system)
     (propagated-inputs
@@ -7667,13 +7667,13 @@ annotation data packages using SQLite data storage.")
 (define-public r-biomart
   (package
     (name "r-biomart")
-    (version "2.40.0")
+    (version "2.40.1")
     (source (origin
               (method url-fetch)
               (uri (bioconductor-uri "biomaRt" version))
               (sha256
                (base32
-                "1i457s91bn7n60bzw3zk4h64xgmawlrr6bq4z4cb7jlm04hdq8qm"))))
+                "1abl0c4qbhfqf9ixdp74183phm7s8rszrr5ldczm59b8vyng8rhx"))))
     (properties
      `((upstream-name . "biomaRt")))
     (build-system r-build-system)
@@ -7859,13 +7859,13 @@ samples.")
 (define-public r-genomicalignments
   (package
     (name "r-genomicalignments")
-    (version "1.20.0")
+    (version "1.20.1")
     (source (origin
               (method url-fetch)
               (uri (bioconductor-uri "GenomicAlignments" version))
               (sha256
                (base32
-                "13zw7bb1adgph9bf9b9y725nr0320b80y70p2yqf3bjb2klfxf55"))))
+                "0s3q97q4pgj5jwn4g95al44rahrwsncsf45v01v4071msx3xmjxq"))))
     (properties
      `((upstream-name . "GenomicAlignments")))
     (build-system r-build-system)
@@ -7939,13 +7939,13 @@ as well as query and modify the browser state, such as the current viewport.")
 (define-public r-genomicfeatures
   (package
     (name "r-genomicfeatures")
-    (version "1.36.1")
+    (version "1.36.3")
     (source (origin
               (method url-fetch)
               (uri (bioconductor-uri "GenomicFeatures" version))
               (sha256
                (base32
-                "02psq3jfgghdydwbydb1j792lvfg44l5npb44mx8d54ckr8658dd"))))
+                "0zkd57i5qjxsravv0gbyckc0wrnqzgxd61ibh3jmhmrccrr9ihn3"))))
     (properties
      `((upstream-name . "GenomicFeatures")))
     (build-system r-build-system)
@@ -8562,13 +8562,13 @@ factors bound at the specific regions.")
 (define-public r-tximport
   (package
     (name "r-tximport")
-    (version "1.12.1")
+    (version "1.12.3")
     (source (origin
               (method url-fetch)
               (uri (bioconductor-uri "tximport" version))
               (sha256
                (base32
-                "1nq8v1sgkm2ssmvr2z3qw0zsk7zy0dzb95g1mfs8fkpjqh3nqq5s"))))
+                "070nx0blvvfhsnkbb5j899wy7dgalrh4xfcciir9l2xl67lna1zf"))))
     (build-system r-build-system)
     (home-page "https://bioconductor.org/packages/tximport")
     (synopsis "Import and summarize transcript-level estimates for gene-level analysis")
@@ -10693,14 +10693,14 @@ memory usage and processing time is minimized.")
 (define-public r-phangorn
   (package
     (name "r-phangorn")
-    (version "2.5.3")
+    (version "2.5.5")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "phangorn" version))
        (sha256
         (base32
-         "1bv86yfk5r015s7ij6v4zz7bagwrw9m13yfs5853drxb19d5h1m3"))))
+         "0ihkaykqjmf80d8wrk3saphxvnv58zma6pd13633bd3cwanc33f5"))))
     (build-system r-build-system)
     (propagated-inputs
      `(("r-ape" ,r-ape)
@@ -12748,7 +12748,7 @@ methylation and segmentation.")
 (define-public pigx-scrnaseq
   (package
     (name "pigx-scrnaseq")
-    (version "0.0.7")
+    (version "0.0.8")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://github.com/BIMSBbioinfo/pigx_scrnaseq/"
@@ -12756,7 +12756,7 @@ methylation and segmentation.")
                                   "/pigx_scrnaseq-" version ".tar.gz"))
               (sha256
                (base32
-                "131zarirv16w8653m0d66jgjnwqfsxqc0hix0rypssz4d83bl51j"))))
+                "0zv0sc5amivxhb95vx2gfx6l9bh7n80fh7h47dalnwxxnfvnzai4"))))
     (build-system gnu-build-system)
     (arguments
      `(#:configure-flags
diff --git a/gnu/packages/certs.scm b/gnu/packages/certs.scm
index ee8815d522..c41870332c 100644
--- a/gnu/packages/certs.scm
+++ b/gnu/packages/certs.scm
@@ -76,7 +76,7 @@
 (define-public nss-certs
   (package
     (name "nss-certs")
-    (version "3.44")
+    (version "3.44.1")
     (source (origin
               (method url-fetch)
               (uri (let ((version-with-underscores
@@ -87,7 +87,7 @@
                       "nss-" version ".tar.gz")))
               (sha256
                (base32
-                "1zvabgxlyvz3fnv4w89y4a5qkscjmm88naf929dgvvgfnrchwqm5"))))
+                "1y0jvva4s3j7cjz22kqw2lsml0an1295bgpc2raf7kc9r60cpr7w"))))
     (build-system gnu-build-system)
     (outputs '("out"))
     (native-inputs
diff --git a/gnu/packages/check.scm b/gnu/packages/check.scm
index 2991916431..9dbef4bf76 100644
--- a/gnu/packages/check.scm
+++ b/gnu/packages/check.scm
@@ -1903,7 +1903,8 @@ backported from Python 2.7 for Python 2.4+.")
        ("python-pyhamcrest" ,python-pyhamcrest)
        ("python-pytest" ,python-pytest)))
     (propagated-inputs
-     `(("python-six" ,python-six)
+     `(("python-importlib-metadata" ,python-importlib-metadata)
+       ("python-six" ,python-six)
        ("python-parse" ,python-parse)
        ("python-parse-type" ,python-parse-type)))
     (arguments
diff --git a/gnu/packages/chromium.scm b/gnu/packages/chromium.scm
index e357556956..79828ef589 100644
--- a/gnu/packages/chromium.scm
+++ b/gnu/packages/chromium.scm
@@ -714,7 +714,11 @@ from forcing GEXP-PROMISE."
        ("glib" ,glib)
        ("gtk+" ,gtk+)
        ("harfbuzz" ,harfbuzz)
-       ("icu4c" ,icu4c)
+
+       ;; Build against ICU 64 to prevent a localization problem in version 75
+       ;; and later: <https://github.com/Eloston/ungoogled-chromium/issues/778>.
+       ("icu4c" ,icu4c-64)
+
        ("jsoncpp" ,jsoncpp)
        ("lcms" ,lcms)
        ("libevent" ,libevent)
diff --git a/gnu/packages/compression.scm b/gnu/packages/compression.scm
index 2b18629cca..ddc43176d9 100644
--- a/gnu/packages/compression.scm
+++ b/gnu/packages/compression.scm
@@ -23,6 +23,7 @@
 ;;; Copyright © 2018 Rutger Helling <rhelling@mykolab.com>
 ;;; Copyright © 2018 Joshua Sierles, Nextjournal <joshua@nextjournal.com>
 ;;; Copyright © 2018 Pierre Neidhardt <mail@ambrevar.xyz>
+;;; Copyright © 2019 Nicolas Goaziou <mail@nicolasgoaziou.fr>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -55,11 +56,13 @@
   #:use-module (gnu packages boost)
   #:use-module (gnu packages check)
   #:use-module (gnu packages curl)
+  #:use-module (gnu packages documentation)
   #:use-module (gnu packages file)
   #:use-module (gnu packages maths)
   #:use-module (gnu packages perl)
   #:use-module (gnu packages pkg-config)
   #:use-module (gnu packages python)
+  #:use-module (gnu packages qt)
   #:use-module (gnu packages tls)
   #:use-module (gnu packages valgrind)
   #:use-module (ice-9 match)
@@ -1910,3 +1913,40 @@ compressor.  UPX typically reduces the file size of programs and shared
 libraries by around 50%--70%, thus reducing disk space, network load times,
 download times, and other distribution and storage costs.")
     (license license:gpl2+)))
+
+(define-public quazip
+  (package
+    (name "quazip")
+    (version "0.8.1")
+    (source (origin
+              (method git-fetch)
+              (uri (git-reference
+                    (url "https://github.com/stachenov/quazip.git")
+                    (commit (string-append "v" version))))
+              (file-name (git-file-name name version))
+              (sha256
+               (base32
+                "1g473gnsbkvxpsv8lbsmhspn7jnq86b05zzgqh11r581v8ndvz5s"))))
+    (build-system cmake-build-system)
+    (arguments
+     `(#:tests? #f))                    ;no test
+    (native-inputs
+     `(("doxygen" ,doxygen)))
+    (inputs
+     `(("qtbase" ,qtbase)
+       ("zlib" ,zlib)))
+    (home-page "https://stachenov.github.io/quazip/index.html")
+    (synopsis "Qt/C++ wrapper for Minizip")
+    (description "QuaZIP is a simple C++ wrapper over Gilles Vollant's
+ZIP/UNZIP package that can be used to access ZIP archives.  It uses
+Trolltech's Qt toolkit.
+
+QuaZIP allows you to access files inside ZIP archives using QIODevice
+API, and that means that you can also use QTextStream, QDataStream or
+whatever you would like to use on your zipped files.
+
+QuaZIP provides complete abstraction of the ZIP/UNZIP API, for both
+reading from and writing to ZIP archives. ")
+    ;; Project is distributed under LGPL, but "quazip/z*" "quazip/unzip.*" are
+    ;; distributed under zlib terms.
+    (license (list license:lgpl2.1+ license:zlib))))
diff --git a/gnu/packages/cran.scm b/gnu/packages/cran.scm
index e0f2b3bb87..e307d2d57c 100644
--- a/gnu/packages/cran.scm
+++ b/gnu/packages/cran.scm
@@ -97,15 +97,17 @@ the system clipboards.")
 (define-public r-ellipsis
   (package
     (name "r-ellipsis")
-    (version "0.1.0")
+    (version "0.2.0")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "ellipsis" version))
        (sha256
         (base32
-         "0pw94qpg81xmsdsagpqxddv7m2cmdszmyyq99dk3caqqj01z7wg6"))))
+         "0hdk79q4wn5nq52p8qd65kqz81l0b8gfzsbzyvmfais0p24qclib"))))
     (build-system r-build-system)
+    (propagated-inputs
+     `(("r-rlang" ,r-rlang)))
     (home-page "https://github.com/hadley/ellipsis")
     (synopsis "Tools for working with additional arguments")
     (description
@@ -1115,14 +1117,14 @@ and several other tools.")
 (define-public r-abbyyr
   (package
     (name "r-abbyyr")
-    (version "0.5.4")
+    (version "0.5.5")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "abbyyR" version))
        (sha256
         (base32
-         "1jh1c1ad6mgw7brdh2isnza1qpjlfxnqr7jl76yd93axyfl76xjx"))))
+         "1vldnd3dg89aj6a73nhirirqddbfdrnzhb5m3679i60sark8nk6r"))))
     (properties `((upstream-name . "abbyyR")))
     (build-system r-build-system)
     (propagated-inputs
@@ -3196,14 +3198,14 @@ simplifying cross-class interoperability.")
 (define-public r-performanceanalytics
   (package
     (name "r-performanceanalytics")
-    (version "1.5.2")
+    (version "1.5.3")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "PerformanceAnalytics" version))
        (sha256
         (base32
-         "01bgm57z079g6r505w3bj293zkbd49fwa8sg55z87vizwavipml6"))))
+         "0jhjldwyxwq7a47zmk5y1jjck7hvq92p8rlgjvdfy51hx2dmlqqd"))))
     (properties
      `((upstream-name . "PerformanceAnalytics")))
     (build-system r-build-system)
@@ -3617,14 +3619,14 @@ iVAT).")
 (define-public r-xfun
   (package
     (name "r-xfun")
-    (version "0.7")
+    (version "0.8")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "xfun" version))
        (sha256
         (base32
-         "1gllyyjhkvswcwa15h1f3kb1l1drs2ifpxy4jjanmmhaj7wcmvy9"))))
+         "05jlbi5byqpw0fkhmmxqglnaxh9gwbcigx77kcpw1pkxnpwfry62"))))
     (build-system r-build-system)
     (home-page "https://github.com/yihui/xfun")
     (synopsis "Miscellaneous functions")
@@ -3761,14 +3763,14 @@ terminals.")
 (define-public r-tinytex
   (package
     (name "r-tinytex")
-    (version "0.13")
+    (version "0.14")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "tinytex" version))
        (sha256
         (base32
-         "1bbphyrbk2rnyi0jhw4hj2w4l84kyhb0km901qd5qnnl0cy6dzvb"))))
+         "0aab7ybc6kkxxk3lzdmbla8zcpp6nmlahchc33miv28cmnqw363w"))))
     (build-system r-build-system)
     (propagated-inputs
      `(("r-xfun" ,r-xfun)))
@@ -4009,14 +4011,14 @@ Fisher's method), and Sidak correction.")
 (define-public r-quantmod
   (package
     (name "r-quantmod")
-    (version "0.4-14")
+    (version "0.4-15")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "quantmod" version))
        (sha256
         (base32
-         "1csljagnpkr1mmc18h70b64zbyj07kx972nip9dng39jfg7ilnyr"))))
+         "0lyzaf5ypk93v6zj9gdghy05cc7cxgn9yasv1apx5r6qsjcfgwky"))))
     (build-system r-build-system)
     (propagated-inputs
      `(("r-curl" ,r-curl)
@@ -4418,17 +4420,18 @@ fit into memory.")
 (define-public r-cgdsr
   (package
     (name "r-cgdsr")
-    (version "1.2.10")
+    (version "1.3.0")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "cgdsr" version))
        (sha256
         (base32
-         "1xyhw7mhmjichr1l6f9y1qvfj9wm87kfbm87ji7lcwf36gxh5g23"))))
+         "07yc819hkabpzzh0g0cbqza6bcfy67b2marrzz1lj97f9iba78ja"))))
     (build-system r-build-system)
     (propagated-inputs
-     `(("r-r-methodss3" ,r-r-methodss3)
+     `(("r-httr" ,r-httr)
+       ("r-r-methodss3" ,r-r-methodss3)
        ("r-r-oo" ,r-r-oo)))
     (home-page "https://github.com/cBioPortal/cgdsr")
     (synopsis "R-based API for accessing the MSKCC Cancer Genomics Data Server")
@@ -5385,14 +5388,14 @@ and adds the annotation to the plot.")
 (define-public r-ggpubr
   (package
     (name "r-ggpubr")
-    (version "0.2")
+    (version "0.2.1")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "ggpubr" version))
        (sha256
         (base32
-         "0rkpcjb1x7lvhj68aam5airbi534jqyiq12x5xk40a25iifhghq6"))))
+         "0a4dv6a752hwvc7l31xs7bgqhfzfdy94xp6wgwaxf5dxm46na7k1"))))
     (build-system r-build-system)
     (propagated-inputs
      `(("r-cowplot" ,r-cowplot)
@@ -5719,14 +5722,14 @@ references and Rd files.")
 (define-public r-officer
   (package
     (name "r-officer")
-    (version "0.3.4")
+    (version "0.3.5")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "officer" version))
        (sha256
         (base32
-         "1m4b3mcn5j5q3nq0jp1nranh4rdb8vxcpabn6ryqk9m6709fvhjz"))))
+         "005kaxjhr40shpav2pg7s7gj8f49579r7rbgwlncbwv16nn0rbbg"))))
     (build-system r-build-system)
     (propagated-inputs
      `(("r-base64enc" ,r-base64enc)
@@ -5883,14 +5886,14 @@ parse and convert strings into cases like snake or camel among others.")
 (define-public r-prediction
   (package
     (name "r-prediction")
-    (version "0.3.6.2")
+    (version "0.3.14")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "prediction" version))
        (sha256
         (base32
-         "0kx7xbm2j6c8h6gk1iig4vfpg877psg16j74hl7zc2mv40sc6dy5"))))
+         "0awlq5lxfia6m2b91w73rksp93rbwv5gwqb36wbji4rgq41rzbrx"))))
     (build-system r-build-system)
     (propagated-inputs
      `(("r-data-table" ,r-data-table)))
@@ -5962,14 +5965,14 @@ vice versa), or to deal with multiple declared missing values.")
 (define-public r-sjmisc
   (package
     (name "r-sjmisc")
-    (version "2.8.0")
+    (version "2.8.1")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "sjmisc" version))
        (sha256
         (base32
-         "0pgavkygsj8fa591pmasx78b4gd32sf2pa067yqvi82xha7dj5k4"))))
+         "1a30n3cyd9h9ilaiai9ywy53f03nikafc47rvpws2c2vghc8mbn7"))))
     (build-system r-build-system)
     (propagated-inputs
      `(("r-dplyr" ,r-dplyr)
@@ -6039,14 +6042,14 @@ functions.")
 (define-public r-flextable
   (package
     (name "r-flextable")
-    (version "0.5.4")
+    (version "0.5.5")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "flextable" version))
        (sha256
         (base32
-         "0h6ylgz1mn61d2kh1bym8hfl3r7nf4z092lmjsaav3h1ki3avrnl"))))
+         "1q6x9mfk5gikqjbbra1dn8hs1rq5ws99jdjav3m113gx9f2j5yxh"))))
     (build-system r-build-system)
     (propagated-inputs
      `(("r-base64enc" ,r-base64enc)
@@ -6639,13 +6642,13 @@ and coverage methods to tune the choice of threshold.")
 (define-public r-ggstance
   (package
     (name "r-ggstance")
-    (version "0.3.1")
+    (version "0.3.2")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "ggstance" version))
        (sha256
-        (base32 "0v7f3xdaaridw6d4jvnsfwxmpjrasvx5vl555wsrn50aah17fkvh"))))
+        (base32 "078ih9s5b0xzf582qg0vjnxvg5qad5ms1v2vdd062ckahi8zz1r8"))))
     (build-system r-build-system)
     (propagated-inputs
      `(("r-ggplot2" ,r-ggplot2)
@@ -7694,14 +7697,14 @@ Hothorn, Westfall, 2010, CRC Press).")
 (define-public r-emmeans
   (package
     (name "r-emmeans")
-    (version "1.3.5")
+    (version "1.3.5.1")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "emmeans" version))
        (sha256
         (base32
-         "0zyink60132f2a0491a94bf67hq8a0bwmw5wn19l0ms8iyiml9d2"))))
+         "0rgzjvmp3yqhwgfg96v17wi8gbafzbrmz134shj2jsf5bsmw6vbj"))))
     (build-system r-build-system)
     (propagated-inputs
      `(("r-estimability" ,r-estimability)
@@ -7926,14 +7929,14 @@ differentiation.")
 (define-public r-bayestestr
   (package
     (name "r-bayestestr")
-    (version "0.2.0")
+    (version "0.2.2")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "bayestestR" version))
        (sha256
         (base32
-         "0729j4fdxkkvmh99nmny38dywidzgmipdjqbi2ljxygsn4jg7ysy"))))
+         "09r654lrhwwnshn5h2s2fbx3c8wigv3j4sva5hmfnkwjg8cclhd9"))))
     (properties `((upstream-name . "bayestestR")))
     (build-system r-build-system)
     (propagated-inputs
@@ -8209,14 +8212,14 @@ more information about packages, and where they were installed from.")
 (define-public r-remotes
   (package
     (name "r-remotes")
-    (version "2.0.4")
+    (version "2.1.0")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "remotes" version))
        (sha256
         (base32
-         "1jbn4kjimcr82zv5lnqxqa2487a96vn6jxf7wc6gnpxr6k06d61p"))))
+         "19v8dmnk9l4i9m64p7zgmj7y1vhnnwhi5kyn0k5d034zzkvchi49"))))
     (build-system r-build-system)
     (home-page "https://github.com/r-lib/remotes#readme")
     (synopsis "R package installation from remote repositories")
@@ -8722,14 +8725,14 @@ Bioconductor packages.")
 (define-public r-rgl
   (package
     (name "r-rgl")
-    (version "0.100.19")
+    (version "0.100.24")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "rgl" version))
        (sha256
         (base32
-         "09bhvx8aq104yzysfgd7wlnq4vrvmnd4jzgj0c32whjfal10fqsh"))))
+         "0nm3iyvhhmh0zlywkfmrq3vyh8z1l296xxfmcky0ifd2qnysfcqj"))))
     (build-system r-build-system)
     (native-inputs
      `(("pkg-config" ,pkg-config)))
@@ -9555,14 +9558,14 @@ Touzet and Varre (2007).")
 (define-public r-rnifti
   (package
     (name "r-rnifti")
-    (version "0.10.0")
+    (version "0.11.0")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "RNifti" version))
        (sha256
         (base32
-         "07sfzps4yg5zdhbxh6i4rbjvbjvvf2d8i9jcf64ywbmi557sw1zv"))))
+         "0zs8ffa6gpi9cygxk7xjin6k3vpvfgb540a506zlk50bf6kc5nlf"))))
     (properties `((upstream-name . "RNifti")))
     (build-system r-build-system)
     (propagated-inputs `(("r-rcpp" ,r-rcpp)))
@@ -10590,14 +10593,14 @@ for association and heterogeneity.")
 (define-public r-bootstrap
   (package
     (name "r-bootstrap")
-    (version "2017.2")
+    (version "2019.6")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "bootstrap" version))
        (sha256
         (base32
-         "08lmsy7k8wsgv89yc904c6fidcymr1ma2ry4fl0p69p21v4iiwa4"))))
+         "1546jqhhw5h177ii8jkdikyd26rv6gwkav816np1zks4p7zgsljj"))))
     (build-system r-build-system)
     (native-inputs `(("gfortran" ,gfortran)))
     (home-page "https://cran.r-project.org/web/packages/bootstrap")
@@ -11000,14 +11003,14 @@ the local machine to, say, distributed processing on a remote compute cluster.")
 (define-public r-future-apply
   (package
     (name "r-future-apply")
-    (version "1.2.0")
+    (version "1.3.0")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "future.apply" version))
        (sha256
         (base32
-         "00ma43ma3byrf9vfqqn9g8sn18c71ryhk7lpza5h7817f1kibw1h"))))
+         "0wd3bh114zkvrqlpn8gqz4ix1igr9hr8x72h2g00a7mqkfjfqx33"))))
     (properties `((upstream-name . "future.apply")))
     (build-system r-build-system)
     (propagated-inputs
diff --git a/gnu/packages/databases.scm b/gnu/packages/databases.scm
index db27110645..578670e3c1 100644
--- a/gnu/packages/databases.scm
+++ b/gnu/packages/databases.scm
@@ -804,14 +804,14 @@ as a drop-in replacement of MySQL.")
 (define-public postgresql
   (package
     (name "postgresql")
-    (version "10.8")
+    (version "10.9")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://ftp.postgresql.org/pub/source/v"
                                   version "/postgresql-" version ".tar.bz2"))
               (sha256
                (base32
-                "0pfdmy4w95b49w9rkn8dwvzmi2brpqfvbxd04y0k0s0xvymc565i"))
+                "0m0gbf7nwgag6a1z5f9xszwzgf2xhx0ncakyxwxlzs87n1zk32wm"))
               (patches (search-patches "postgresql-disable-resolve_symlinks.patch"))))
     (build-system gnu-build-system)
     (arguments
diff --git a/gnu/packages/education.scm b/gnu/packages/education.scm
index 98aaad7e63..2bb61a744a 100644
--- a/gnu/packages/education.scm
+++ b/gnu/packages/education.scm
@@ -250,17 +250,17 @@ easy.")
 (define-public snap
   (package
     (name "snap")
-    (version "4.2.2.9")
+    (version "5")
     (source
      (origin
        (method git-fetch)
        (uri (git-reference
              (url "https://github.com/jmoenig/Snap.git")
-             (commit version)))
+             (commit (string-append "v" version))))
        (file-name (git-file-name name version))
        (sha256
         (base32
-         "07qyhh4f8gr1fqyvxa2i6lkzaaa0vl12yzllgp81rdil8z8bi976"))))
+         "0bh52n7nklaaq02qb56v7bvrslf047my6irl7g8h6xfjgw04yf20"))))
     (build-system trivial-build-system)
     (arguments
      `(#:modules ((guix build utils))
diff --git a/gnu/packages/emacs-xyz.scm b/gnu/packages/emacs-xyz.scm
index 34f56d8340..c30a05bd82 100644
--- a/gnu/packages/emacs-xyz.scm
+++ b/gnu/packages/emacs-xyz.scm
@@ -550,7 +550,7 @@ for editing Racket's Scribble documentation syntax in Emacs.")
 (define-public emacs-shroud
   (package
     (name "emacs-shroud")
-    (version "1.15.1")
+    (version "1.83.4")
     (source
      (origin
        (method git-fetch)
@@ -559,7 +559,7 @@ for editing Racket's Scribble documentation syntax in Emacs.")
              (commit version)))
        (file-name (git-file-name name version))
        (sha256
-        (base32 "0wvm4lxqcc1p8v7rpqal3bnqgnpk1gs7v18i83f6cvi5d88jkgdg"))))
+        (base32 "1yvdjx0kp4y8w5yz2cbqq9n6xl5splvmsyyx8ld1xv0q1c9872nf"))))
     (build-system emacs-build-system)
     (propagated-inputs
      `(("emacs-bui" ,emacs-bui)
@@ -16340,3 +16340,35 @@ themselves live in an Org-mode file.  As such, this leverages the power of
 Org-mode (the notes may have outlines, latex fragments, babel, etc...) while
 acting like notes that are made @emph{in} the document.")
     (license license:gpl3+)))
+
+(define-public emacs-multi-term
+  (let ((commit "0804b11e52b960c80f5cd0712ee1e53ae70d83a4"))
+    (package
+      (name "emacs-multi-term")
+      (version "1.2")
+      (source (origin
+                (method git-fetch)
+                (uri (git-reference
+                      (url "https://github.com/manateelazycat/multi-term.git")
+                      (commit commit)))
+                (file-name (git-file-name name version))
+                (sha256
+                 (base32
+                  "0apvidmvb7rv05qjnjhax42ma8wrimik5vxx620dlbv17svz7iyf"))))
+      (build-system emacs-build-system)
+      (inputs `(("zsh" ,zsh)))
+      (home-page "https://github.com/manateelazycat/multi-term")
+      (synopsis "Manage multiple terminal buffers in Emacs")
+      (description
+       "This package enhances @code{term.el} with the following features:
+
+@enumerate
+@item Functions to switch between multiple terminal buffers
+@item List of keys to be intercepted by @code{emacs-multi-term} instead of by
+the underlying terminal
+@item Kills the unused buffer left after exiting the terminal
+@item Kills the running sub-processes along with the terminal when killing the
+it forcibly
+@item Dedicated window for debugging program.
+@end enumerate")
+      (license license:gpl3+))))
diff --git a/gnu/packages/emulators.scm b/gnu/packages/emulators.scm
index c1ae14bc42..bf638525df 100644
--- a/gnu/packages/emulators.scm
+++ b/gnu/packages/emulators.scm
@@ -1185,7 +1185,7 @@ play them on systems for which they were never designed!")
 (define-public mame
   (package
     (name "mame")
-    (version "0.210")
+    (version "0.211")
     (source
      (origin
        (method git-fetch)
@@ -1195,7 +1195,7 @@ play them on systems for which they were never designed!")
        (file-name (git-file-name name version))
        (sha256
         (base32
-         "08c62mc8aajzh44q36qvmrcq404hdzh3i8wwdfnvn0c4w8dbf486"))
+         "0gbxgncbzmmplijg0c1ibwsb87fbmfvs1kjflh002yyx8yvfw83z"))
        (modules '((guix build utils)))
        (snippet
         ;; Remove bundled libraries.
diff --git a/gnu/packages/finance.scm b/gnu/packages/finance.scm
index cd5d3b7d9a..03a8285fc1 100644
--- a/gnu/packages/finance.scm
+++ b/gnu/packages/finance.scm
@@ -935,7 +935,7 @@ Luhn and family of ISO/IEC 7064 check digit algorithms. ")
 (define-public python-duniterpy
   (package
     (name "python-duniterpy")
-    (version "0.54.1")
+    (version "0.54.3")
     (source
      (origin
        (method git-fetch)
@@ -946,7 +946,7 @@ Luhn and family of ISO/IEC 7064 check digit algorithms. ")
        (file-name (git-file-name name version))
        (sha256
         (base32
-         "15z5wc3ahvv8axyiqmf7hd4y91ahh1x4bfmgsqxwygyhswl1yjq8"))))
+         "1k3rpfc9zxj9z50cr4zjfyzdla9ap5mj1v1rlcriqmflgb5cmiba"))))
     (build-system python-build-system)
     (arguments
      ;; Tests fail with "AttributeError: module 'attr' has no attribute 's'".
@@ -993,7 +993,7 @@ main features are:
 (define-public silkaj
   (package
     (name "silkaj")
-    (version "0.7.0")
+    (version "0.7.2")
     (source
      (origin
        (method git-fetch)
@@ -1003,7 +1003,7 @@ main features are:
        (file-name (git-file-name name version))
        (sha256
         (base32
-         "0pnd5v15sgxxm114sbs0z24a4dars5hy1nabc9v9ask7kxzrxs9y"))))
+         "059k2kil2l8jcm4wp86w1z7y8p26rww7d3l5fzds0qq2dzvkvzgs"))))
     (build-system python-build-system)
     (arguments
      `(#:tests? #f))                    ;no test
diff --git a/gnu/packages/flashing-tools.scm b/gnu/packages/flashing-tools.scm
index f0547a1a8a..a8d6cfd5aa 100644
--- a/gnu/packages/flashing-tools.scm
+++ b/gnu/packages/flashing-tools.scm
@@ -48,7 +48,7 @@
 (define-public flashrom
   (package
     (name "flashrom")
-    (version "1.0.1")
+    (version "1.1")
     (source (origin
               (method url-fetch)
               (uri (string-append
@@ -56,7 +56,7 @@
                     version ".tar.bz2"))
               (sha256
                (base32
-                "0i6yrrl69hrqmwd7azj7x3j46m0qpvzmk3b5basym7mnlpfzhyfm"))))
+                "06afq680n9p34hi3vrkn12vd1pfyq2062db9qqbi4hi21k3skbdf"))))
     (build-system gnu-build-system)
     (inputs `(("dmidecode" ,dmidecode)
               ("pciutils" ,pciutils)
diff --git a/gnu/packages/freedesktop.scm b/gnu/packages/freedesktop.scm
index 4b37ffdf3c..d77d6c58c4 100644
--- a/gnu/packages/freedesktop.scm
+++ b/gnu/packages/freedesktop.scm
@@ -152,14 +152,14 @@ freedesktop.org project.")
 (define-public libinput
   (package
     (name "libinput")
-    (version "1.13.2")
+    (version "1.13.4")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://freedesktop.org/software/libinput/"
                                   "libinput-" version ".tar.xz"))
               (sha256
                (base32
-                "0vbapc90m49n0z8w8w4v0qf1iiwaixw9h79jfmps9pj8hdls17qx"))))
+                "07a0w7rak7rvnh6g4j0akwjxwinxfszc1xi9mrx12fv82k3mgsyk"))))
     (build-system meson-build-system)
     (arguments
      `(#:configure-flags '("-Ddocumentation=false")))
diff --git a/gnu/packages/gl.scm b/gnu/packages/gl.scm
index 99d2ec6cdb..9ed043c7ae 100644
--- a/gnu/packages/gl.scm
+++ b/gnu/packages/gl.scm
@@ -46,6 +46,7 @@
   #:use-module (gnu packages python-xyz)
   #:use-module (gnu packages tls)
   #:use-module (gnu packages video)
+  #:use-module (gnu packages vulkan)
   #:use-module (gnu packages xdisorg)
   #:use-module (gnu packages xml)
   #:use-module (gnu packages xorg)
@@ -223,7 +224,7 @@ also known as DXTn or DXTC) for Mesa.")
 (define-public mesa
   (package
     (name "mesa")
-    (version "19.0.4")
+    (version "19.1.1")
     (source
       (origin
         (method url-fetch)
@@ -235,7 +236,7 @@ also known as DXTn or DXTC) for Mesa.")
                                   version "/mesa-" version ".tar.xz")))
         (sha256
          (base32
-          "0iyffj3xd7f0vsayirswh6aia37ba26hkihpz273hxwd8hpz7y9r"))
+          "10amy5sdmpjbskr3xazgk0jyli8xpgi0y1nsmjr76hx8nhb4n4bj"))
         (patches
          (search-patches "mesa-skip-disk-cache-test.patch"))))
     (build-system meson-build-system)
@@ -269,6 +270,13 @@ also known as DXTn or DXTC) for Mesa.")
       `(("bison" ,bison)
         ("flex" ,flex)
         ("gettext" ,gettext-minimal)
+        ,@(match (%current-system)
+            ((or "x86_64-linux" "i686-linux")
+             `(("glslang" ,glslang)
+               ("vulkan-headers" ,vulkan-headers)
+               ("vulkan-loader" ,vulkan-loader)))
+            (_
+             `()))
         ("pkg-config" ,pkg-config)
         ("python" ,python)
         ("python-mako" ,python-mako)
@@ -305,6 +313,13 @@ also known as DXTn or DXTC) for Mesa.")
              (_
               '("-Dvulkan-drivers=auto")))
 
+         ;; Enable the Vulkan overlay layer on i686-linux and x86-64-linux.
+         ,@(match (%current-system)
+             ((or "x86_64-linux" "i686-linux")
+              '("-Dvulkan-overlay-layer=true"))
+             (_
+              '()))
+
          ;; Also enable the tests.
          "-Dbuild-tests=true"
 
diff --git a/gnu/packages/gstreamer.scm b/gnu/packages/gstreamer.scm
index 39a4eb5fc0..b0f0b032b3 100644
--- a/gnu/packages/gstreamer.scm
+++ b/gnu/packages/gstreamer.scm
@@ -110,6 +110,7 @@ arrays of data.")
       (uri (string-append
             "https://gstreamer.freedesktop.org/src/gstreamer/gstreamer-"
             version ".tar.xz"))
+      (patches (search-patches "gstreamer-buffer-reset-offset.patch"))
       (sha256
        (base32
         "003wy1p1in85p9sr5jsyhbnwqaiwz069flwkhyx7qhxy31qjz3hf"))))
@@ -119,19 +120,7 @@ arrays of data.")
      `(#:configure-flags
        (list (string-append "--with-html-dir="
                             (assoc-ref %outputs "doc")
-                            "/share/gtk-doc/html"))
-
-       ,@(if (not (target-64bit?))
-           ;; Skip test that fails on 32-bit systems:
-           ;; <https://gitlab.freedesktop.org/gstreamer/gstreamer/issues/316>.
-           `(#:phases (modify-phases %standard-phases
-                        (add-before 'check 'disable-gstbufferpool-test
-                          (lambda _
-                            (substitute* "tests/check/Makefile"
-                              (("^[[:blank:]]+gst/gstbufferpool.*$")
-                               ""))
-                              #t))))
-           '())))
+                            "/share/gtk-doc/html"))))
     (propagated-inputs `(("glib" ,glib))) ; required by gstreamer-1.0.pc.
     (native-inputs
      `(("bison" ,bison)
diff --git a/gnu/packages/gtk.scm b/gnu/packages/gtk.scm
index 10e58808a5..e2e3b4365a 100644
--- a/gnu/packages/gtk.scm
+++ b/gnu/packages/gtk.scm
@@ -732,7 +732,7 @@ application suites.")
    (name "gtk+")
    ;; NOTE: When updating the version of 'gtk+', the hash of 'mate-themes' in
    ;;       mate.scm will also need to be updated.
-   (version "3.24.8")
+   (version "3.24.9")
    (source (origin
             (method url-fetch)
             (uri (string-append "mirror://gnome/sources/" name "/"
@@ -740,7 +740,7 @@ application suites.")
                                 name "-" version ".tar.xz"))
             (sha256
              (base32
-              "16f71bbkhwhndcsrpyhjia3b77cb5ksf5c45lyfgws4pkgg64sb6"))
+              "0dg6jf2763sp740ls6b5y86b5b9zhz3zj0sbmar2xpws1lkv0zjp"))
             (patches (search-patches "gtk3-respect-GUIX_GTK3_PATH.patch"
                                      "gtk3-respect-GUIX_GTK3_IM_MODULE_FILE.patch"))))
    (outputs '("out" "bin" "doc"))
@@ -1182,7 +1182,7 @@ extensive documentation, including API reference and a tutorial.")
      ;; In 'Requires' of gtksourceviewmm-3.0.pc.
      `(("glibmm" ,glibmm)
        ("gtkmm" ,gtkmm)
-       ("gtksourceview" ,gtksourceview)))
+       ("gtksourceview" ,gtksourceview-3)))
     (synopsis "C++ interface to the GTK+ 'GtkTextView' widget")
     (description
      "gtksourceviewmm is a portable C++ library that extends the standard GTK+
diff --git a/gnu/packages/guile-xyz.scm b/gnu/packages/guile-xyz.scm
index a8352380f7..f652a94d2e 100644
--- a/gnu/packages/guile-xyz.scm
+++ b/gnu/packages/guile-xyz.scm
@@ -2326,82 +2326,55 @@ more expressive and flexible than the traditional @code{format} procedure.")
       (license license:bsd-3))))
 
 (define-public emacsy
-  (let ((commit "7d49cc1425d5d209bdb82cac0d8ea0694b8b3784")
-        (revision "4"))
-    (package
-      (name "emacsy")
-      (version (string-append "0.1.2-" revision "." (string-take commit 7)))
-      (source (origin
-                (method git-fetch)
-                (uri (git-reference
-                      (url "https://gitlab.com/janneke/emacsy.git")
-                      (commit commit)))
-                (file-name (string-append name "-" version))
-                (sha256
-                 (base32
-                  "0k9yns1v8zn135w60sx96nqs2bm2p2dvcvlm987hkw4lbff9ii6i"))))
-      (build-system gnu-build-system)
-      (native-inputs
-       `(("emacsy-webkit-gtk"
-          ,(origin
-             (method git-fetch)
-             (uri (git-reference
-                   (url "https://gitlab.com/janneke/emacsy-webkit-gtk.git")
-                   (commit "35ded1b3e997fd779a17e0c4a2c73741718562d9")))
-             (file-name (string-append "emacsy-webkit-gtk" "-" version))
-             (sha256
-              (base32
-               "1gp0li2rbp6in926r3hrww6cnh864pp46v1din2pgmd7vzzl7kg0"))))
-         ("hello-emacsy"
-          ,(origin
-             (method git-fetch)
-             (uri (git-reference
-                   (url "https://gitlab.com/janneke/hello-emacsy.git")
-                   (commit "2c117e5286a261be4ff24938f3ae1d348396c538")))
-             (file-name (string-append "hello-emacsy" "-" version))
-             (sha256
-              (base32
-               "15ykd7s8axcy8ym4v71fgal4x28fxnim0pv0jmpi3dnhizr63zqn"))))
-         ("autoconf" ,autoconf)
-         ("automake" ,automake)
-         ("bzip2" ,bzip2)
-         ("guile" ,guile-2.2)
-         ("gettext" ,gnu-gettext)
-         ("libtool" ,libtool)
-         ("noweb" ,noweb)
-         ("perl" ,perl)
-         ("pkg-config" ,pkg-config)
-         ("texinfo" ,texinfo)
-         ("texlive" ,texlive)))
-      (propagated-inputs
-       `(("guile-lib" ,guile-lib)
-         ("guile-readline" ,guile-readline)
-         ("freeglut" ,freeglut)
-         ("gssettings-desktop-schemas" ,gsettings-desktop-schemas)
-         ("webkitgtk" ,webkitgtk)))
-      (inputs `(("guile" ,guile-2.2)))
-      (arguments
-       `(#:phases
-         (modify-phases %standard-phases
-           (add-after 'unpack 'unpack-examples
-             (lambda _
-               (copy-recursively (assoc-ref %build-inputs "emacsy-webkit-gtk")
-                                 "example/emacsy-webkit-gtk")
-               (copy-recursively (assoc-ref %build-inputs "hello-emacsy")
-                                 "example/hello-emacsy")))
-           (add-before 'configure 'setenv
-             (lambda _
-               (setenv "GUILE_AUTO_COMPILE" "0"))))))
-      (home-page "https://github.com/shanecelis/emacsy/")
-      (synopsis "Embeddable GNU Emacs-like library using Guile")
-      (description
-       "Emacsy is an embeddable GNU Emacs-like library that uses GNU Guile
+  (package
+    (name "emacsy")
+    (version "0.4.1")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append
+                    "https://download.savannah.nongnu.org/releases/"
+                    name "/" name "-" version ".tar.gz"))
+              (sha256
+               (base32
+                "1cpb85dl1nibd34c2x2h7vfmjpkgh353p5b1w20v6cs6gmvgg4np"))))
+    (build-system gnu-build-system)
+    (native-inputs
+     `(("autoconf" ,autoconf)
+       ("automake" ,automake)
+       ("bzip2" ,bzip2)
+       ("guile" ,guile-2.2)
+       ("gettext" ,gnu-gettext)
+       ("libtool" ,libtool)
+       ("perl" ,perl)
+       ("pkg-config" ,pkg-config)
+       ("texinfo" ,texinfo)
+       ("texlive" ,texlive)))
+    (propagated-inputs
+     `(("dbus-glib" ,dbus-glib)
+       ("guile" ,guile-2.2)
+       ("guile-lib" ,guile-lib)
+       ("guile-readline" ,guile-readline)
+       ("glib-networking" ,glib-networking)
+       ("freeglut" ,freeglut)
+       ("gssettings-desktop-schemas" ,gsettings-desktop-schemas)
+       ("webkitgtk" ,webkitgtk)))
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-before 'configure 'setenv
+           (lambda _
+             (setenv "GUILE_AUTO_COMPILE" "0")
+             #t)))))
+    (home-page "https://savannah.nongnu.org/projects/emacsy")
+    (synopsis "Embeddable GNU Emacs-like library using Guile")
+    (description
+     "Emacsy is an embeddable Emacs-like library that uses GNU Guile
 as extension language.  Emacsy can give a C program an Emacsy feel with
 keymaps, minibuffer, recordable macros, history, tab completion, major
 and minor modes, etc., and can also be used as a pure Guile library.  It
-comes with a simple counter example using GLUT and browser examples in C
-using gtk+-3 and webkitgtk.")
-      (license license:gpl3+))))
+comes with a simple counter example using FreeGLUT and browser examples
+in C using Gtk+-3 and WebKitGtk.")
+    (license license:gpl3+)))
 
 (define-public guile-jpeg
   (let ((commit "6a1673578b297c2c1b28e44a76bd5c49e76a5046")
diff --git a/gnu/packages/haskell-check.scm b/gnu/packages/haskell-check.scm
index 550bb13a65..9b010fd5eb 100644
--- a/gnu/packages/haskell-check.scm
+++ b/gnu/packages/haskell-check.scm
@@ -822,3 +822,47 @@ minimal dependencies.")
 cryptographic ciphers, and is used by the test runners of various Haskell
 implementations of cryptographic ciphers.")
     (license license:bsd-3)))
+
+(define-public ghc-hedgehog
+  (package
+    (name "ghc-hedgehog")
+    (version "0.6.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "mirror://hackage/package/hedgehog/hedgehog-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0xz10ycdm5vk9nrcym1fi83k19frfwqz18bz8bnpzwvaj0j41yfj"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-ansi-terminal" ,ghc-ansi-terminal-0.8)
+       ("ghc-async" ,ghc-async)
+       ("ghc-concurrent-output" ,ghc-concurrent-output)
+       ("ghc-exceptions" ,ghc-exceptions)
+       ("ghc-lifted-async" ,ghc-lifted-async)
+       ("ghc-mmorph" ,ghc-mmorph)
+       ("ghc-monad-control" ,ghc-monad-control)
+       ("ghc-pretty-show" ,ghc-pretty-show)
+       ("ghc-primitive" ,ghc-primitive)
+       ("ghc-random" ,ghc-random)
+       ("ghc-resourcet" ,ghc-resourcet)
+       ("ghc-semigroups" ,ghc-semigroups)
+       ("ghc-stm" ,ghc-stm)
+       ("ghc-th-lift" ,ghc-th-lift)
+       ("ghc-transformers-base" ,ghc-transformers-base)
+       ("ghc-wl-pprint-annotated"
+        ,ghc-wl-pprint-annotated)))
+    (home-page "https://hedgehog.qa")
+    (synopsis "Property-based testing in the spirt of QuickCheck")
+    (description
+     "Hedgehog is a property-based testing system, in the spirit of
+QuickCheck.  Hedgehog uses integrated shrinking, so shrinks obey the invariants
+of generated values by construction.
+
+To get started quickly, see the examples:
+@uref{https://github.com/hedgehogqa/haskell-hedgehog/tree/master/hedgehog-example}")
+    (license license:bsd-3)))
diff --git a/gnu/packages/haskell.scm b/gnu/packages/haskell.scm
index cfbd3bfb76..17fddc1965 100644
--- a/gnu/packages/haskell.scm
+++ b/gnu/packages/haskell.scm
@@ -18,6 +18,7 @@
 ;;; Copyright © 2018 Arun Isaac <arunisaac@systemreboot.net>
 ;;; Copyright © 2018, 2019 Gabriel Hondet <gabrielhondet@gmail.com>
 ;;; Copyright © 2019 Robert Vollmert <rob@vllmrt.net>
+;;; Copyright © 2019 Jacob MacDonald <jaccarmac@gmail.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -2685,7 +2686,7 @@ library, including the ability to split random number generators.")
 (define-public ghc-primitive
   (package
     (name "ghc-primitive")
-    (version "0.6.3.0")
+    (version "0.6.4.0")
     (outputs '("out" "doc"))
     (source
      (origin
@@ -2696,7 +2697,7 @@ library, including the ability to split random number generators.")
              ".tar.gz"))
        (sha256
         (base32
-         "0mcmbnj08wd6zfwn7xk6zf5hy5zwbla5v78pw0dpymqg9s0gzpnd"))))
+         "0r0cda7acvplgwaxy69kviv4jp7kkfi038by68gj4yfx4iwszgjc"))))
     (build-system haskell-build-system)
     (home-page
      "https://github.com/haskell/primitive")
@@ -4085,7 +4086,7 @@ instances of the @code{Pretty} class.")
          "0gnb4mkqryv08vncxnj0bzwcnd749613yw3cxfzw6y3nsldp4c56"))))
     (build-system haskell-build-system)
     (inputs
-     `(("ghc-ansi-terminal" ,ghc-ansi-terminal)))
+     `(("ghc-ansi-terminal" ,ghc-ansi-terminal-0.8)))
     (home-page "https://github.com/ekmett/ansi-wl-pprint")
     (synopsis "Wadler/Leijen Pretty Printer for colored ANSI terminal output")
     (description "This is a pretty printing library based on Wadler's paper
@@ -4362,7 +4363,7 @@ interface.")
 (define-public ghc-ansi-terminal
   (package
     (name "ghc-ansi-terminal")
-    (version "0.8.0.4")
+    (version "0.9.1")
     (source
      (origin
        (method url-fetch)
@@ -4372,7 +4373,7 @@ interface.")
              ".tar.gz"))
        (sha256
         (base32
-         "0428gq8m3fdnb7ldcsyk97qcch76hcxbgh2666p6f76fs2qbhg7b"))))
+         "1yr0ld0kqns3w3j9gl62bdwshvyazidx4dv1qkvq19ivnf08w23l"))))
     (build-system haskell-build-system)
     (inputs
      `(("ghc-colour" ,ghc-colour)))
@@ -4383,6 +4384,21 @@ allows cursor movement, screen clearing, color output showing or hiding the
 cursor, and changing the title.")
     (license license:bsd-3)))
 
+(define-public ghc-ansi-terminal-0.8
+  (package (inherit ghc-ansi-terminal)
+           (name "ghc-ansi-terminal")
+           (version "0.8.0.4")
+           (source
+            (origin
+              (method url-fetch)
+              (uri (string-append
+                    "https://hackage.haskell.org/package/ansi-terminal/ansi-terminal-"
+                    version
+                    ".tar.gz"))
+              (sha256
+               (base32
+                "0428gq8m3fdnb7ldcsyk97qcch76hcxbgh2666p6f76fs2qbhg7b"))))))
+
 (define-public ghc-vault
   (package
     (name "ghc-vault")
@@ -11591,4 +11607,122 @@ Replace some ASCII sequences by their Unicode equivalent (turned off by
 default)
 @end itemize")
     (license license:bsd-3)))
+
+(define-public ghc-validation
+  (package
+    (name "ghc-validation")
+    (version "1.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "mirror://hackage/package/validation/validation-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1acj7mh3581ks405xswxw6667z7y1y0slisg6jvp6chc191ji9l5"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'add-setup-script
+           (lambda _
+             ;; The usual "Setup.hs" script is missing from the source.
+             (with-output-to-file "Setup.hs"
+               (lambda ()
+                 (format #t "import Distribution.Simple~%")
+                 (format #t "main = defaultMain~%"))))))))
+    (inputs
+     `(("ghc-semigroups" ,ghc-semigroups)
+       ("ghc-semigroupoids" ,ghc-semigroupoids)
+       ("ghc-bifunctors" ,ghc-bifunctors)
+       ("ghc-lens" ,ghc-lens)))
+    (native-inputs
+     `(("ghc-hedgehog" ,ghc-hedgehog)
+       ("ghc-hunit" ,ghc-hunit)))
+    (home-page "https://github.com/qfpl/validation")
+    (synopsis
+     "Data-type like Either but with an accumulating Applicative")
+    (description
+     "A data-type like Either but with differing properties and type-class
+instances.
+
+Library support is provided for this different representation, including
+@code{lens}-related functions for converting between each and abstracting over
+their similarities.
+
+The @code{Validation} data type is isomorphic to @code{Either}, but has an
+instance of @code{Applicative} that accumulates on the error side.  That is to
+say, if two (or more) errors are encountered, they are appended using a
+@{Semigroup} operation.
+
+As a consequence of this @code{Applicative} instance, there is no
+corresponding @code{Bind} or @code{Monad} instance.  @code{Validation} is an
+example of, \"An applicative functor that is not a monad.\"")
+    (license license:bsd-3)))
+
+(define-public ghc-concurrent-output
+  (package
+    (name "ghc-concurrent-output")
+    (version "1.10.10")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "mirror://hackage/package/concurrent-output/concurrent-output-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1wnjxnwbc3l853kiiijagzjyb6fmhz3lmkwls24plbximl1qrr22"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-async" ,ghc-async)
+       ("ghc-stm" ,ghc-stm)
+       ("ghc-exceptions" ,ghc-exceptions)
+       ("ghc-ansi-terminal" ,ghc-ansi-terminal)
+       ("ghc-terminal-size" ,ghc-terminal-size)))
+    (home-page
+     "https://hackage.haskell.org/package/concurrent-output")
+    (synopsis
+     "Ungarble output from several threads or commands")
+    (description
+     "Lets multiple threads and external processes concurrently output to the
+console, without it getting all garbled up.
+
+Built on top of that is a way of defining multiple output regions, which are
+automatically laid out on the screen and can be individually updated by
+concurrent threads.  Can be used for progress displays etc.")
+    (license license:bsd-2)))
+
+(define-public ghc-wl-pprint-annotated
+  (package
+    (name "ghc-wl-pprint-annotated")
+    (version "0.1.0.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "mirror://hackage/package/wl-pprint-annotated/wl-pprint-annotated-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1br7qyf27iza213inwhf9bm2k6in0zbmfw6w4clqlc9f9cj2nrkb"))))
+    (build-system haskell-build-system)
+    (native-inputs
+     `(("ghc-tasty" ,ghc-tasty)
+       ("ghc-tasty-hunit" ,ghc-tasty-hunit)))
+    (home-page
+     "https://github.com/minad/wl-pprint-annotated#readme")
+    (synopsis
+     "Wadler/Leijen pretty printer with annotation support")
+    (description
+     "Annotations are useful for coloring.  This is a limited version of
+@code{wl-pprint-extras} without support for point effects and without the free
+monad.  Like in @code{annotated-wl-pprint}, only annotations are supported.
+Compared to @code{annotated-wl-pprint} this library provides a slightly
+modernized interface.")
+    (license license:bsd-3)))
 ;;; haskell.scm ends here
diff --git a/gnu/packages/icu4c.scm b/gnu/packages/icu4c.scm
index 054c41d361..bc53e7ee3c 100644
--- a/gnu/packages/icu4c.scm
+++ b/gnu/packages/icu4c.scm
@@ -4,6 +4,7 @@
 ;;; Copyright © 2016, 2017 Efraim Flashner <efraim@flashner.co.il>
 ;;; Copyright © 2017 Clément Lassieur <clement@lassieur.org>
 ;;; Copyright © 2017 Ricardo Wurmus <rekado@elephly.net>
+;;; Copyright © 2019 Marius Bakke <mbakke@fastmail.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -84,6 +85,22 @@ C/C++ part.")
    (license x11)
    (home-page "http://site.icu-project.org/")))
 
+(define-public icu4c-64
+  (package
+    (inherit icu4c)
+    (version "64.2")
+    (source (origin
+              (inherit (package-source icu4c))
+              (uri (string-append
+                    "http://download.icu-project.org/files/icu4c/" version "/icu4c-"
+                    (string-map (lambda (x) (if (char=? x #\.) #\_ x)) version)
+                    "-src.tgz"))
+              (sha256
+               (base32 "0v0xsf14xwlj125y9fd8lrhsaych4d8liv8gr746zng6g225szb2"))))
+    (native-inputs
+     `(;; For tests.
+       ("python" ,python)))))
+
 (define-public java-icu4j
   (package
     (name "java-icu4j")
diff --git a/gnu/packages/image-viewers.scm b/gnu/packages/image-viewers.scm
index a5bfb28a88..7d2ff9a677 100644
--- a/gnu/packages/image-viewers.scm
+++ b/gnu/packages/image-viewers.scm
@@ -10,6 +10,7 @@
 ;;; Copyright © 2018, 2019 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;; Copyright © 2018, 2019 Ricardo Wurmus <rekado@elephly.net>
 ;;; Copyright © 2019 Nicolas Goaziou <mail@nicolasgoaziou.fr>
+;;; Copyright © 2019 Guy Fleury Iteriteka <hoonandon@gmail.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -477,3 +478,28 @@ minimalism and usability in mind.  Its features include animated GIF
 controls, file history, rotation/mirroring, and multithreaded
 preloading.")
     (license license:gpl3+)))
+
+(define-public chafa
+  (package
+    (name "chafa")
+    (version "1.0.1")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://hpjansson.org/chafa/releases/chafa-"
+                                  version ".tar.xz"))
+              (sha256
+               (base32
+                "00cf2z52az0z6bzc3hfm4l8infipy5ck410wqmbaybd2csjr3m29"))))
+    (build-system gnu-build-system)
+    (native-inputs
+     `(("pkg-config" ,pkg-config)))
+    (inputs
+     `(("glib" ,glib)
+       ("imagemagick" ,imagemagick)))
+    (synopsis "Convert images to ANSI/Unicode characters")
+    (description
+     "Chafa is a command-line utility that converts all kinds of images,
+including animated GIFs, into ANSI/Unicode character output that can be
+displayed in a terminal.")
+    (home-page "https://hpjansson.org/chafa/")
+    (license license:lgpl3+)))
diff --git a/gnu/packages/imagemagick.scm b/gnu/packages/imagemagick.scm
index dba193d8e5..3cc9396d57 100644
--- a/gnu/packages/imagemagick.scm
+++ b/gnu/packages/imagemagick.scm
@@ -48,14 +48,14 @@
     ;; The 7 release series has an incompatible API, while the 6 series is still
     ;; maintained. Don't update to 7 until we've made sure that the ImageMagick
     ;; users are ready for the 7-series API.
-    (version "6.9.10-49")
+    (version "6.9.10-51")
     (source (origin
              (method url-fetch)
              (uri (string-append "mirror://imagemagick/ImageMagick-"
                                  version ".tar.xz"))
              (sha256
               (base32
-               "1w4vsppyn1h58x3z4hgly5qxp16q66l18y9rwavrravw0kiq64fs"))))
+               "03c5r14ycp7mmlk6pryfcnpvjjnghk3z7dbjd1b7m1bgzmw21jhj"))))
     (build-system gnu-build-system)
     (arguments
      `(#:configure-flags '("--with-frozenpaths" "--without-gcc-arch")
diff --git a/gnu/packages/kde.scm b/gnu/packages/kde.scm
index 2fce704901..31b3670079 100644
--- a/gnu/packages/kde.scm
+++ b/gnu/packages/kde.scm
@@ -4,6 +4,7 @@
 ;;; Copyright © 2017, 2018 Mark Meyer <mark@ofosos.org>
 ;;; Copyright © 2017, 2018, 2019 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;; Copyright © 2018 Gábor Boskovits <boskovits@gmail.com>
+;;; Copyright © 2019 Nicolas Goaziou <mail@nicolasgoaziou.fr>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -319,29 +320,21 @@ plugins, as well as code to create plugins, or complete applications.")
 (define-public krita
   (package
     (name "krita")
-    (version "4.1.7.101")
+    (version "4.2.2")
     (source (origin
               (method url-fetch)
               (uri (string-append
                     "mirror://kde/stable/krita/"
                     (version-prefix version 3)
-                    "/" name "-" version ".tar.gz"))
+                    "/krita-" version ".tar.gz"))
               (sha256
                (base32
-                "0pvghb17vj3y19wa1n1zfg3yl5206ir3y45znrgdgdw076m5pjav"))))
+                "1pzk5bqp3kh22djhvsvmsc7ybirs4hsnkpg1y9677m2gxwbqnnps"))))
     (build-system cmake-build-system)
     (arguments
      `(#:tests? #f
        #:configure-flags
-       (list "-DBUILD_TESTING=OFF" "-DKDE4_BUILD_TESTS=OFF"
-             (string-append "-DWITH_FFTW3="
-                            (assoc-ref %build-inputs "fftw"))
-             (string-append "-DWITH_GSL="
-                            (assoc-ref %build-inputs "gsl"))
-             (string-append "-DWITH_LibRaw="
-                            (assoc-ref %build-inputs "libraw"))
-             (string-append "-DWITH_TIFF="
-                            (assoc-ref %build-inputs "libtiff"))
+       (list "-DBUILD_TESTING=OFF"
              (string-append "-DCMAKE_CXX_FLAGS=-I"
                             (assoc-ref %build-inputs "ilmbase")
                             "/include/OpenEXR"))
@@ -366,14 +359,15 @@ plugins, as well as code to create plugins, or complete applications.")
        ("extra-cmake-modules" ,extra-cmake-modules)
        ("gettext-minimal" ,gettext-minimal)
        ("kitemmodels" ,kitemmodels)
+       ("pkg-config" ,pkg-config)
        ("qwt" ,qwt)
        ("vc" ,vc)))
     (inputs
-     `(("qtbase" ,qtbase)
-       ("qtdeclarative" ,qtdeclarative)
-       ("qtmultimedia" ,qtmultimedia)
-       ("qtx11extras" ,qtx11extras)
-       ("qtsvg" ,qtsvg)
+     `(("boost" ,boost)
+       ("exiv2" ,exiv2)
+       ("fftw" ,fftw)
+       ("gsl" ,gsl)
+       ("ilmbase" ,ilmbase)
        ("karchive" ,karchive)
        ("kcompletion" ,kcompletion)
        ("kconfig" ,kconfig)
@@ -387,23 +381,24 @@ plugins, as well as code to create plugins, or complete applications.")
        ("kwidgetsaddons" ,kwidgetsaddons)
        ("kwindowsystem" ,kwindowsystem)
        ("kxmlgui" ,kxmlgui)
-       ("boost" ,boost)
-       ("exiv2" ,exiv2)
        ("lcms" ,lcms)
-       ("libpng" ,libpng)
        ("libjpeg-turbo" ,libjpeg-turbo)
-       ("zlib" ,zlib)
+       ("libpng" ,libpng)
+       ("libraw" ,libraw-0.18)
+       ("libtiff" ,libtiff)
        ("libx11" ,libx11)
        ("libxcb" ,libxcb)
        ("libxi" ,libxi)
-       ("fftw" ,fftw)
-       ("gsl" ,gsl)
-       ("poppler-qt5" ,poppler-qt5)
-       ("libraw" ,libraw-0.18)
-       ("libtiff" ,libtiff)
+       ("openexr" ,openexr)
        ("perl" ,perl)
-       ("ilmbase" ,ilmbase)
-       ("openexr" ,openexr)))
+       ("poppler-qt5" ,poppler-qt5)
+       ("qtbase" ,qtbase)
+       ("qtdeclarative" ,qtdeclarative)
+       ("qtmultimedia" ,qtmultimedia)
+       ("qtsvg" ,qtsvg)
+       ("qtx11extras" ,qtx11extras)
+       ("quazip" ,quazip)
+       ("zlib" ,zlib)))
     (home-page "https://krita.org")
     (synopsis "Digital painting application")
     (description
diff --git a/gnu/packages/linux.scm b/gnu/packages/linux.scm
index 7df83ca020..9696364d83 100644
--- a/gnu/packages/linux.scm
+++ b/gnu/packages/linux.scm
@@ -457,8 +457,8 @@ It has been modified to remove all non-free binary blobs.")
   (make-linux-libre-headers %linux-libre-4.19-version
                             %linux-libre-4.19-hash))
 
-(define %linux-libre-4.14-version "4.14.130")
-(define %linux-libre-4.14-hash "1fk6ds0q2rykr6byvfass8f5a9k6qq9sk261wjcfp1gn8b9wmxws")
+(define %linux-libre-4.14-version "4.14.131")
+(define %linux-libre-4.14-hash "1qcf4cg83zpjirkj8l09y07x4zzskypngampvfw7zyazynwwgs1i")
 
 (define-public linux-libre-4.14
   (make-linux-libre %linux-libre-4.14-version
@@ -471,14 +471,14 @@ It has been modified to remove all non-free binary blobs.")
                             %linux-libre-4.14-hash))
 
 (define-public linux-libre-4.9
-  (make-linux-libre "4.9.183"
-                    "1w3syih3fggwkpcl6zkmm9f6577r2jvack4br5ffccgcddkz52ia"
+  (make-linux-libre "4.9.184"
+                    "0q3ggndwf0rwsb3xv33zl9awkd1803h2l9b4g6d6ps3f2sjxwxwa"
                     '("x86_64-linux" "i686-linux")
                     #:configuration-file kernel-config))
 
 (define-public linux-libre-4.4
-  (make-linux-libre "4.4.183"
-                    "1v21n5kwnv9n18gfp2dz9hsdkwmfwigalr82xsnwbzhs0x561bxx"
+  (make-linux-libre "4.4.184"
+                    "05v295wk9fid17n5plkx6p9nwz6dvpcn2r7khwsq30sy3pg0vxv5"
                     '("x86_64-linux" "i686-linux")
                     #:configuration-file kernel-config
                     #:extra-options
@@ -3535,7 +3535,7 @@ and copy/paste text in the console and in xterm.")
 (define-public btrfs-progs
   (package
     (name "btrfs-progs")
-    (version "5.1")
+    (version "5.1.1")
     (source (origin
               (method url-fetch)
               (uri (string-append "mirror://kernel.org/linux/kernel/"
@@ -3543,7 +3543,7 @@ and copy/paste text in the console and in xterm.")
                                   "btrfs-progs-v" version ".tar.xz"))
               (sha256
                (base32
-                "0dgh56pamav8wb9nmabjwdlpcazvqc9pgzwablxn77mqh0qrhkaq"))))
+                "06xybs7rglxjqkbzl2409acb3rgmnc5zc0xhyaxsc2p1x5yipfcw"))))
     (build-system gnu-build-system)
     (outputs '("out"
                "static"))      ; static versions of the binaries in "out"
diff --git a/gnu/packages/lisp.scm b/gnu/packages/lisp.scm
index 58813c2d84..37e375d356 100644
--- a/gnu/packages/lisp.scm
+++ b/gnu/packages/lisp.scm
@@ -5665,6 +5665,45 @@ basic everyday functions and macros.")
 (define-public ecl-fare-utils
   (sbcl-package->ecl-package sbcl-fare-utils))
 
+(define-public sbcl-trivial-utf-8
+  (let ((commit "4d427cfbb1c452436a0efb71c3205c9da67f718f")
+        (revision "1"))
+    (package
+      (name "sbcl-trivial-utf-8")
+      (version (git-version "0.0.0" revision commit))
+      (source
+       (origin
+         (method git-fetch)
+         (uri
+          (git-reference
+           (url (string-append "https://gitlab.common-lisp.net/"
+                               "trivial-utf-8/trivial-utf-8.git"))
+           (commit commit)))
+         (file-name (git-file-name name version))
+         (sha256
+          (base32
+           "1jz27gz8gvqdmvp3k9bxschs6d5b3qgk94qp2bj6nv1d0jc3m1l1"))))
+      (arguments
+       ;; Guix incorrectly assumes the "8" is part of the version
+       ;; number and lobs it off.
+       `(#:asd-file "trivial-utf-8.asd"
+         #:asd-system-name "trivial-utf-8"))
+      (build-system asdf-build-system/sbcl)
+      (synopsis "UTF-8 input/output library")
+      (description
+       "The Babel library solves a similar problem while understanding more
+encodings.  Trivial UTF-8 was written before Babel existed, but for new
+projects you might be better off going with Babel.  The one plus that Trivial
+UTF-8 has is that it doesn't depend on any other libraries.")
+      (home-page "https://common-lisp.net/project/trivial-utf-8/")
+      (license license:bsd-3))))
+
+(define-public cl-trivial-utf-8
+  (sbcl-package->cl-source-package sbcl-trivial-utf-8))
+
+(define-public ecl-trivial-utf-8
+  (sbcl-package->ecl-package sbcl-trivial-utf-8))
+
 (define-public sbcl-idna
   (package
     (name "sbcl-idna")
diff --git a/gnu/packages/llvm.scm b/gnu/packages/llvm.scm
index 732ffc0823..0315740bcd 100644
--- a/gnu/packages/llvm.scm
+++ b/gnu/packages/llvm.scm
@@ -48,7 +48,7 @@
   #:use-module (gnu packages python)
   #:use-module (gnu packages xml))
 
-(define-public llvm
+(define-public llvm-8
   (package
     (name "llvm")
     (version "8.0.0")
@@ -99,6 +99,8 @@ languages is in development.  The compiler infrastructure includes mirror sets
 of programming tools as well as libraries with equivalent functionality.")
     (license license:ncsa)))
 
+(define-public llvm llvm-8)
+
 (define* (clang-runtime-from-llvm llvm hash
                                   #:optional (patches '()))
   (package
@@ -371,6 +373,28 @@ with that of libgomp, the GNU Offloading and Multi Processing Library.")
                    "0svk1f70hvpwrjp6x5i9kqwrqwxnmcrw5s7f4cxyd100mdd12k08"
                    #:patches '("clang-7.0-libc-search-path.patch")))
 
+(define-public llvm-7
+  (package
+    (inherit llvm)
+    (version "7.0.1")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://llvm.org/releases/"
+                                  version "/llvm-" version ".src.tar.xz"))
+              (sha256
+               (base32
+                "16s196wqzdw4pmri15hadzqgdi926zln3an2viwyq0kini6zr3d3"))))))
+
+(define-public clang-runtime-7
+  (clang-runtime-from-llvm
+   llvm-7
+   "065ybd8fsc4h2hikbdyricj6pyv4r7r7kpcikhb2y5zf370xybkq"))
+
+(define-public clang-7
+  (clang-from-llvm llvm-7 clang-runtime
+                   "067lwggnbg0w1dfrps790r5l6k8n5zwhlsw7zb6zvmfpwpfn4nx4"
+                   #:patches '("clang-7.0-libc-search-path.patch")))
+
 (define-public llvm-6
   (package
     (inherit llvm)
@@ -542,9 +566,9 @@ with that of libgomp, the GNU Offloading and Multi Processing Library.")
     (inputs
      `(("llvm"
         ,(package
-           (inherit llvm)
+           (inherit llvm-7)
            (source (origin
-                     (inherit (package-source llvm))
+                     (inherit (package-source llvm-7))
                      (patches
                       (list
                        (origin
diff --git a/gnu/packages/maths.scm b/gnu/packages/maths.scm
index c595103ac5..df8bad13e0 100644
--- a/gnu/packages/maths.scm
+++ b/gnu/packages/maths.scm
@@ -1463,30 +1463,30 @@ can solve two kinds of problems:
         "11wwxpy2q1bhxs2v41bqn05i2sb0905cj1xil6mg8l4k2kka4cq6"))))
     (build-system gnu-build-system)
     (inputs
-     `(("lapack" ,lapack)
-       ("qhull" ,qhull)
-       ("readline" ,readline)
-       ("gl2ps" ,gl2ps)
-       ("glpk" ,glpk)
+     `(("alsa-lib" ,alsa-lib)
+       ("arpack" ,arpack-ng)
+       ("curl" ,curl)
        ("fftw" ,fftw)
        ("fftwf" ,fftwf)
-       ("arpack" ,arpack-ng)
-       ("pcre" ,pcre)
        ("fltk" ,fltk)
        ("fontconfig" ,fontconfig)
        ("freetype" ,freetype)
-       ("hdf5" ,hdf5)
-       ("libxft" ,libxft)
-       ("mesa" ,mesa)
+       ("gl2ps" ,gl2ps)
+       ("glpk" ,glpk)
        ("glu" ,glu)
-       ("zlib" ,zlib)
-       ("curl" ,curl)
-       ("texinfo" ,texinfo)
        ("graphicsmagick" ,graphicsmagick)
-       ("suitesparse" ,suitesparse)
+       ("hdf5" ,hdf5)
+       ("lapack" ,lapack)
        ("libsndfile" ,libsndfile)
+       ("libxft" ,libxft)
+       ("mesa" ,mesa)
+       ("pcre" ,pcre)
        ("portaudio" ,portaudio)
-       ("alsa-lib" ,alsa-lib)))
+       ("qhull" ,qhull)
+       ("readline" ,readline)
+       ("suitesparse" ,suitesparse)
+       ("texinfo" ,texinfo)
+       ("zlib" ,zlib)))
     (native-inputs
      `(("lzip" ,lzip)
        ("gfortran" ,gfortran)
@@ -3369,13 +3369,15 @@ packages.")
              ;; Use `sh', not `/bin/sh'.
              (substitute* (find-files "." "Makefile|configure|SpewMakeInc\\.c")
                (("/bin/sh")
-                "sh"))))
+                "sh"))
+             #t))
          ;; Fix /bin/sh in generated make files.
          (add-after 'configure 'fix-/bin/sh-in-generated-files
            (lambda _
              (substitute* (find-files "." "^[Mm]ake\\.inc.*")
                (("/bin/sh")
-                "sh"))))
+                "sh"))
+             #t))
          ;; ATLAS configure program does not accepts the default flags
          ;; passed by the 'gnu-build-system'.
          (replace 'configure
diff --git a/gnu/packages/music.scm b/gnu/packages/music.scm
index ca9cbd3343..0a0677161a 100644
--- a/gnu/packages/music.scm
+++ b/gnu/packages/music.scm
@@ -21,6 +21,7 @@
 ;;; Copyright © 2018 Björn Höfling <bjoern.hoefling@bjoernhoefling.de>
 ;;; Copyright © 2019 Gabriel Hondet <gabrielhondet@gmail.com>
 ;;; Copyright © 2019 Timotej Lazar <timotej.lazar@araneo.si>
+;;; Copyright © 2019 Jakob L. Kreuze <zerodaysfordays@sdf.lonestar.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -129,6 +130,7 @@
   #:use-module (gnu packages tcl)
   #:use-module (gnu packages texinfo)
   #:use-module (gnu packages tex)
+  #:use-module (gnu packages time)
   #:use-module (gnu packages tls)
   #:use-module (gnu packages version-control)
   #:use-module (gnu packages video)
@@ -2816,6 +2818,33 @@ metadata as it goes using the MusicBrainz database.  Then it provides a variety
 of tools for manipulating and accessing your music.")
     (license license:expat)))
 
+(define-public beets-bandcamp
+  (package
+    (name "beets-bandcamp")
+    (version "0.1.3")
+    (source (origin
+              (method url-fetch)
+              (uri (pypi-uri "beets-bandcamp" version))
+              (sha256
+               (base32
+                "04awg0zdhhg5h510fc1p3qkvr2l1qm6nf85hlr9z8im8a7xlka0i"))))
+    (build-system python-build-system)
+    (arguments '(#:tests? #f))          ; there are no tests
+    (propagated-inputs
+     `(("beets" ,beets)
+       ("python-isodate" ,python-isodate)))
+    (inputs
+     `(("python-beautifulsoup4" ,python-beautifulsoup4)
+       ("python-requests" ,python-requests)
+       ("python-six" ,python-six)))
+    (home-page "https://github.com/unrblt/beets-bandcamp")
+    (synopsis "Bandcamp plugin for beets")
+    (description
+     "This plugin for beets automatically obtains tag data from @uref{Bandcamp,
+https://bandcamp.com/}.  It's also capable of getting song lyrics and album art
+using the beets FetchArt plugin.")
+    (license license:gpl2)))
+
 (define-public milkytracker
   (package
     (name "milkytracker")
@@ -3718,7 +3747,7 @@ audio samples and various soft sythesizers.  It can receive input from a MIDI ke
 (define-public musescore
   (package
     (name "musescore")
-    (version "3.1")
+    (version "3.2")
     (source (origin
               (method git-fetch)
               (uri (git-reference
@@ -3727,7 +3756,7 @@ audio samples and various soft sythesizers.  It can receive input from a MIDI ke
               (file-name (git-file-name name version))
               (sha256
                (base32
-                "07xkn8gnnqzhj9cn1li5qpm2rfm86bmxbbfd76i1jx4v999icn0j"))
+                "0719p4hjlq7skga8q4hvnd5w33vhrd1a1aygvqm9pn4na02zazy6"))
               (modules '((guix build utils)))
               (snippet
                ;; Un-bundle OpenSSL and remove unused libraries.
diff --git a/gnu/packages/nss.scm b/gnu/packages/nss.scm
index 83f4431c2b..40a8002954 100644
--- a/gnu/packages/nss.scm
+++ b/gnu/packages/nss.scm
@@ -70,7 +70,7 @@ in the Mozilla clients.")
 (define-public nss
   (package
     (name "nss")
-    (version "3.44")
+    (version "3.44.1")
     (source (origin
               (method url-fetch)
               (uri (let ((version-with-underscores
@@ -81,7 +81,7 @@ in the Mozilla clients.")
                       "nss-" version ".tar.gz")))
               (sha256
                (base32
-                "1zvabgxlyvz3fnv4w89y4a5qkscjmm88naf929dgvvgfnrchwqm5"))
+                "1y0jvva4s3j7cjz22kqw2lsml0an1295bgpc2raf7kc9r60cpr7w"))
               ;; Create nss.pc and nss-config.
               (patches (search-patches "nss-pkgconfig.patch"
                                        "nss-increase-test-timeout.patch"))))
diff --git a/gnu/packages/package-management.scm b/gnu/packages/package-management.scm
index 81b3c321e4..d10c8f2742 100644
--- a/gnu/packages/package-management.scm
+++ b/gnu/packages/package-management.scm
@@ -8,7 +8,7 @@
 ;;; Copyright © 2018 Julien Lepiller <julien@lepiller.eu>
 ;;; Copyright © 2018, 2019 Rutger Helling <rhelling@mykolab.com>
 ;;; Copyright © 2018 Sou Bunnbu <iyzsong@member.fsf.org>
-;;; Copyright © 2018 Eric Bavier <bavier@member.fsf.org>
+;;; Copyright © 2018, 2019 Eric Bavier <bavier@member.fsf.org>
 ;;; Copyright © 2019 Efraim Flashner <efraim@flashner.co.il>
 ;;; Copyright © 2019 Vagrant Cascadian <vagrant@reproducible-builds.org>
 ;;; Copyright © 2019 Jonathan Brielmaier <jonathan.brielmaier@web.de>
@@ -466,17 +466,32 @@ sub-directory.")
 (define-public stow
   (package
     (name "stow")
-    (version "2.2.2")
+    (version "2.3.0")
     (source (origin
               (method url-fetch)
               (uri (string-append "mirror://gnu/stow/stow-"
                                   version ".tar.gz"))
               (sha256
                (base32
-                "1pvky9fayms4r6fhns8jd0vavszd7d979w62vfd5n88v614pdxz2"))))
+                "0h8qr2rxsrkg6d8jxjk68r23jgn1dxdxyp4bnzzinpa8sjhfl905"))))
     (build-system gnu-build-system)
+    (arguments
+     '(#:phases
+       (modify-phases %standard-phases
+         (add-after 'install 'wrap-stow
+           (lambda* (#:key inputs outputs #:allow-other-keys)
+             (let ((out (assoc-ref outputs "out")))
+               (wrap-program (string-append out "/bin/stow")
+                 `("PERL5LIB" ":" prefix
+                   ,(map (lambda (i) (string-append (assoc-ref inputs i)
+                                                    "/lib/perl5/site_perl"))
+                         '("perl-clone-choose" "perl-clone" "perl-hash-merge"))))
+               #t))))))
     (inputs
-     `(("perl" ,perl)))
+     `(("perl" ,perl)
+       ("perl-clone" ,perl-clone)
+       ("perl-clone-choose" ,perl-clone-choose)
+       ("perl-hash-merge" ,perl-hash-merge)))
     (native-inputs
      `(("perl-test-simple" ,perl-test-simple)
        ("perl-test-output" ,perl-test-output)
@@ -490,7 +505,7 @@ of data and makes them appear to be merged into the same directory.  It is
 typically used for managing software packages installed from source, by
 letting you install them apart in distinct directories and then create
 symlinks to the files in a common directory such as /usr/local.")
-    (license license:gpl2+)))
+    (license license:gpl3+)))
 
 (define-public rpm
   (package
diff --git a/gnu/packages/patches/gstreamer-buffer-reset-offset.patch b/gnu/packages/patches/gstreamer-buffer-reset-offset.patch
new file mode 100644
index 0000000000..024892a60f
--- /dev/null
+++ b/gnu/packages/patches/gstreamer-buffer-reset-offset.patch
@@ -0,0 +1,59 @@
+Fix a buffer offset problem in GStreamer 1.16.  Initially reported by Mark H.
+Weaver in <https://lists.gnu.org/archive/html/guix-devel/2019-06/msg00140.html>.
+
+See also <https://gitlab.freedesktop.org/gstreamer/gstreamer/issues/316>.
+
+From 1734c9fc1a4f99b165383ae1eb02f04e0844a00c Mon Sep 17 00:00:00 2001
+From: Nicolas Dufresne <nicolas.dufresne@collabora.com>
+Date: Sat, 29 Jun 2019 09:22:05 -0400
+Subject: [PATCH] bufferpool: Fix the buffer size reset code
+
+The offset in gst_buffer_resize() is additive. So to move back the
+offset to zero, we need to pass the opposite of the current offset. This
+was raised through the related unit test failingon 32bit as on 64bit
+the alignment padding was enough to hide the issue. The test was
+modified to also fail on 64bit. This patch will remove spurious
+assertions like:
+
+  assertion 'bufmax >= bufoffs + offset + size' failed
+
+Fixes #316
+---
+ gst/gstbufferpool.c             | 7 +++++--
+ tests/check/gst/gstbufferpool.c | 2 +-
+ 2 files changed, 6 insertions(+), 3 deletions(-)
+
+diff --git a/gst/gstbufferpool.c b/gst/gstbufferpool.c
+index e5c7a5872..619860e63 100644
+--- a/gst/gstbufferpool.c
++++ b/gst/gstbufferpool.c
+@@ -1222,8 +1222,11 @@ default_reset_buffer (GstBufferPool * pool, GstBuffer * buffer)
+   GST_BUFFER_OFFSET_END (buffer) = GST_BUFFER_OFFSET_NONE;
+ 
+   /* if the memory is intact reset the size to the full size */
+-  if (!GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_TAG_MEMORY))
+-    gst_buffer_resize (buffer, 0, pool->priv->size);
++  if (!GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_TAG_MEMORY)) {
++    gsize offset;
++    gst_buffer_get_sizes (buffer, &offset, NULL);
++    gst_buffer_resize (buffer, -offset, pool->priv->size);
++  }
+ 
+   /* remove all metadata without the POOLED flag */
+   gst_buffer_foreach_meta (buffer, remove_meta_unpooled, pool);
+diff --git a/tests/check/gst/gstbufferpool.c b/tests/check/gst/gstbufferpool.c
+index f0c3c8d8e..dd9b2dc03 100644
+--- a/tests/check/gst/gstbufferpool.c
++++ b/tests/check/gst/gstbufferpool.c
+@@ -190,7 +190,7 @@ GST_START_TEST (test_buffer_modify_discard)
+   gst_buffer_pool_acquire_buffer (pool, &buf, NULL);
+   buffer_track_destroy (buf, &dcount);
+   /* do resize, as we didn't modify the memory, pool should reuse this buffer */
+-  gst_buffer_resize (buf, 5, 2);
++  gst_buffer_resize (buf, 8, 2);
+   gst_buffer_unref (buf);
+ 
+   /* buffer should've gone back into pool */
+-- 
+2.22.0
+
diff --git a/gnu/packages/patches/webkitgtk-sans-gstreamer-gl.patch b/gnu/packages/patches/webkitgtk-sans-gstreamer-gl.patch
deleted file mode 100644
index 4577c81edb..0000000000
--- a/gnu/packages/patches/webkitgtk-sans-gstreamer-gl.patch
+++ /dev/null
@@ -1,24 +0,0 @@
-Fix build failure when USE_GSTREAMER_GL=off.  See
-<https://bugs.webkit.org/show_bug.cgi?id=196440>.
-
-This patch is taken from the upstream source repository:
-<https://git.webkit.org/?p=WebKit.git;a=commitdiff;h=e2dd6decbe25ea9498f1ba213808f34b232740c7>.
-
-diff --git a/Source/WebCore/platform/graphics/gstreamer/MediaPlayerPrivateGStreamerBase.cpp b/Source/WebCore/platform/graphics/gstreamer/MediaPlayerPrivateGStreamerBase.cpp
-index 00a2af6489e..5cb5f7536ac 100644
---- a/Source/WebCore/platform/graphics/gstreamer/MediaPlayerPrivateGStreamerBase.cpp
-+++ b/Source/WebCore/platform/graphics/gstreamer/MediaPlayerPrivateGStreamerBase.cpp
-@@ -1000,11 +1000,13 @@ void MediaPlayerPrivateGStreamerBase::updateTextureMapperFlags()
-         break;
-     }
- 
-+#if USE(GSTREAMER_GL)
-     // When the imxvpudecoder is used, the texture sampling of the
-     // directviv-uploaded texture returns an RGB value, so there's no need to
-     // convert it.
-     if (m_videoDecoderPlatform != WebKitGstVideoDecoderPlatform::ImxVPU)
-         m_textureMapperFlags |= TEXTURE_MAPPER_COLOR_CONVERT_FLAG;
-+#endif
- }
- #endif
- 
diff --git a/gnu/packages/perl.scm b/gnu/packages/perl.scm
index 52b2bc2630..5040761d26 100644
--- a/gnu/packages/perl.scm
+++ b/gnu/packages/perl.scm
@@ -2,7 +2,7 @@
 ;;; Copyright © 2012, 2013, 2014, 2015, 2016, 2017 Ludovic Courtès <ludo@gnu.org>
 ;;; Copyright © 2013 Andreas Enge <andreas@enge.fr>
 ;;; Copyright © 2015, 2016, 2017, 2019 Ricardo Wurmus <rekado@elephly.net>
-;;; Copyright © 2015, 2016, 2017 Eric Bavier <bavier@member.fsf.org>
+;;; Copyright © 2015, 2016, 2017, 2019 Eric Bavier <bavier@member.fsf.org>
 ;;; Copyright © 2015 Eric Dvorsak <eric@dvorsak.fr>
 ;;; Copyright © 2016, 2018 Mark H Weaver <mhw@netris.org>
 ;;; Copyright © 2016 Jochem Raat <jchmrt@riseup.net>
@@ -1283,6 +1283,32 @@ objects.")
     (home-page "https://metacpan.org/release/Clone")
     (license (package-license perl))))
 
+(define-public perl-clone-choose
+  (package
+    (name "perl-clone-choose")
+    (version "0.010")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "mirror://cpan/authors/id/H/HE/HERMES/"
+                           "Clone-Choose-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0cin2bjn5z8xhm9v4j7pwlkx88jnvz8al0njdjwyvs6fb0glh8sn"))))
+    (build-system perl-build-system)
+    (native-inputs
+     `(("perl-clone" ,perl-clone)
+       ("perl-clone-pp" ,perl-clone-pp)
+       ("perl-test-without-module" ,perl-test-without-module)))
+    (propagated-inputs
+     `(("perl-module-runtime" ,perl-module-runtime)))
+    (home-page "https://metacpan.org/release/Clone-Choose")
+    (synopsis "Choose appropriate Perl @code{clone} utility")
+    (description "This @code{Clone::Choose} module checks several different
+modules which provide a @code{clone()} function and selects an appropriate
+one.")
+    (license perl-license)))
+
 (define-public perl-clone-pp
   (package
     (name "perl-clone-pp")
@@ -9562,7 +9588,7 @@ MYMETA.yml.")
 (define-public perl-module-build
   (package
     (name "perl-module-build")
-    (version "0.4220")
+    (version "0.4229")
     (source
      (origin
        (method url-fetch)
@@ -9570,7 +9596,7 @@ MYMETA.yml.")
                            "Module-Build-" version ".tar.gz"))
        (sha256
         (base32
-         "18mm6k7d7cmj9l6na1c50vbc8hc1pwsz38yxi9x6ydlrwz3hf4pv"))))
+         "064c03wxia7jz0i578awj4srykj0nnigm4p5r0dv0559rnk93r0z"))))
     (build-system perl-build-system)
     (propagated-inputs
      `(("perl-cpan-meta" ,perl-cpan-meta)))
diff --git a/gnu/packages/python-xyz.scm b/gnu/packages/python-xyz.scm
index 3ae5b1248f..67e104d503 100644
--- a/gnu/packages/python-xyz.scm
+++ b/gnu/packages/python-xyz.scm
@@ -3188,14 +3188,14 @@ provides additional functionality on the produced Mallard documents.")
 (define-public python-cython
   (package
     (name "python-cython")
-    (version "0.29.7")
+    (version "0.29.11")
     (source
      (origin
        (method url-fetch)
        (uri (pypi-uri "Cython" version))
        (sha256
         (base32
-         "1s61hq2ikawxp6qvmkbfvvaxy9rqj67cddzwgcfc3dwi44b83l2m"))))
+         "1866m01ggl2h3rky4hac3m5p048gg4a0jb09ljkknryiqln54fkn"))))
     (build-system python-build-system)
     ;; we need the full python package and not just the python-wrapper
     ;; because we need libpython3.3m.so
@@ -4420,14 +4420,14 @@ a general image processing tool.")
 (define-public python-pycparser
   (package
     (name "python-pycparser")
-    (version "2.18")
+    (version "2.19")
     (source
      (origin
       (method url-fetch)
       (uri (pypi-uri "pycparser" version))
       (sha256
        (base32
-        "09mjyw82ibqzl449g7swy8bfxnfpmas0815d2rkdjlcqw81wma4r"))))
+        "1cr5dcj9628lkz1qlwq3fv97c25363qppkmcayqvd05dpy573259"))))
     (outputs '("out" "doc"))
     (build-system python-build-system)
     (native-inputs
@@ -4450,7 +4450,8 @@ a general image processing tool.")
                            (copy-file (string-append "." file)
                                       (string-append doc file)))
                          '("/README.rst" "/CHANGES" "/LICENSE"))
-               (copy-recursively "examples" examples)))))))
+               (copy-recursively "examples" examples)
+               #t))))))
     (home-page "https://github.com/eliben/pycparser")
     (synopsis "C parser in Python")
     (description
@@ -8642,14 +8643,14 @@ python-xdo for newer bindings.)")
 (define-public python-mako
   (package
     (name "python-mako")
-    (version "1.0.12")
+    (version "1.0.13")
     (source
      (origin
        (method url-fetch)
        (uri (pypi-uri "Mako" version))
        (sha256
         (base32
-         "0qj16ai937wrbpv1a9g395gybb9s06rmdj3arbp8fpl37bg6byhc"))))
+         "0h95n0g0k1jwxiqarr09navpfajarvbmpm8mhmw66c25qc675vlm"))))
     (build-system python-build-system)
     (propagated-inputs
      `(("python-markupsafe" ,python-markupsafe)))
diff --git a/gnu/packages/regex.scm b/gnu/packages/regex.scm
index a64944080b..71dac09737 100644
--- a/gnu/packages/regex.scm
+++ b/gnu/packages/regex.scm
@@ -30,7 +30,7 @@
 (define-public re2
    (package
      (name "re2")
-     (version "2019-06-01")
+     (version "2019-07-01")
      (home-page "https://github.com/google/re2")
      (source (origin
                (method git-fetch)
@@ -38,7 +38,7 @@
                (file-name (git-file-name name version))
                (sha256
                 (base32
-                 "01613z66wgiffdngbq3031rwd92jf87j93h7y5mn8hlx19gg5k4j"))))
+                 "1ric6gdnf5mqj5iy5f81al49mr3mmjqj3nqi3mw2hjdbbgwkdn71"))))
      (build-system gnu-build-system)
      (arguments
       `(#:modules ((guix build gnu-build-system)
diff --git a/gnu/packages/rust.scm b/gnu/packages/rust.scm
index f90bc52506..b3c6d538ac 100644
--- a/gnu/packages/rust.scm
+++ b/gnu/packages/rust.scm
@@ -868,14 +868,7 @@ jemalloc = \"" jemalloc "/lib/libjemalloc_pic.a" "\"
                       (delete-file-recursively "src/llvm-emscripten")
                       (delete-file-recursively "src/tools/clang")
                       (delete-file-recursively "src/tools/lldb")
-                      #t))
-          (patches (map search-patch '("rust-1.25-accept-more-detailed-gdb-lines.patch"
-                                       "rust-1.30-gdb-llvm.patch"
-                                       "rust-reproducible-builds.patch")))))
-      (inputs
-       ;; Use LLVM 7.0
-       (alist-replace "llvm" (list llvm)
-                      (package-inputs base-rust)))
+                      #t))))
       (arguments
        (substitute-keyword-arguments (package-arguments base-rust)
          ((#:phases phases)
@@ -915,12 +908,6 @@ jemalloc = \"" jemalloc "/lib/libjemalloc_pic.a" "\"
           "0sk84ff0cklybcp0jbbxcw7lk7mrm6kb6km5nzd6m64dy0igrlli")))
     (package
       (inherit base-rust)
-      (source
-        (origin
-          (inherit (package-source base-rust))
-          (patches (map search-patch '("rust-1.25-accept-more-detailed-gdb-lines.patch"
-                                       "rust-1.30-gdb-llvm.patch"
-                                       "rust-reproducible-builds.patch")))))
       (arguments
        (substitute-keyword-arguments (package-arguments base-rust)
          ((#:phases phases)
@@ -1066,6 +1053,9 @@ jemalloc = \"" jemalloc "/lib/libjemalloc_pic.a" "\"
            "0bbizy6b7002v1rdhrxrf5gijclbyizdhkglhp81ib3bf5x66kas")))
     (package
       (inherit base-rust)
+      (inputs
+       (alist-replace "llvm" (list llvm-8)
+                      (package-inputs base-rust)))
       (arguments
        (substitute-keyword-arguments (package-arguments base-rust)
          ((#:phases phases)
diff --git a/gnu/packages/statistics.scm b/gnu/packages/statistics.scm
index 21fe65a08d..31dff49daa 100644
--- a/gnu/packages/statistics.scm
+++ b/gnu/packages/statistics.scm
@@ -460,14 +460,14 @@ k-nearest neighbour, Learning Vector Quantization and Self-Organizing Maps.")
 (define-public r-cluster
   (package
     (name "r-cluster")
-    (version "2.0.9")
+    (version "2.1.0")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "cluster" version))
        (sha256
         (base32
-         "1bg5dvs4bzj0rp75jpxaklz12rvyh5w99h7zkvfgpgn86ljg1rlf"))))
+         "055af3yz2biqbsbwm4arwr1yqnj4gicpzv2i6dbfl5pnz2z5byga"))))
     (build-system r-build-system)
     (native-inputs
      `(("gfortran" ,gfortran)))
@@ -1198,14 +1198,14 @@ agnes cluster diagrams.")
 (define-public r-gdtools
   (package
     (name "r-gdtools")
-    (version "0.1.8")
+    (version "0.1.9")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "gdtools" version))
        (sha256
         (base32
-         "1ayy0s699ghaz34lklvcskfwman3x2n2772s5sa5x9k9xgsnxwcl"))))
+         "0w4fihf52q5qxxk0lg36x6yvjjl8vw66y60ncdjs5fvnxqn5z2vb"))))
     (build-system r-build-system)
     (native-inputs
      `(("pkg-config" ,pkg-config)))
@@ -1651,13 +1651,13 @@ defined in different packages.")
 (define-public r-rlang
   (package
     (name "r-rlang")
-    (version "0.3.4")
+    (version "0.4.0")
     (source (origin
               (method url-fetch)
               (uri (cran-uri "rlang" version))
               (sha256
                (base32
-                "1pks7d2xavzgaxqrnk3f79qsmv4wqv93f8991jv93pnb1mxpyijf"))))
+                "038mmbmklw17ncgz53vrdx2506c1jj6di3y165bbx2sl2yia8j4p"))))
     (build-system r-build-system)
     (home-page "http://rlang.tidyverse.org")
     (synopsis "Functions for base types, core R and Tidyverse features")
@@ -1730,14 +1730,14 @@ database.")
 (define-public r-dbplyr
   (package
     (name "r-dbplyr")
-    (version "1.4.1")
+    (version "1.4.2")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "dbplyr" version))
        (sha256
         (base32
-         "15fs66qq2p20gi3y2jlcsw27ach8rwkkkgr1mz2qbiyddbsjks6g"))))
+         "1q2dflr88s5a1amzfld3087q422vf70052qn84zyd8895kdg10xp"))))
     (build-system r-build-system)
     (propagated-inputs
      `(("r-assertthat" ,r-assertthat)
@@ -2537,13 +2537,13 @@ disk (or a connection).")
 (define-public r-plotrix
   (package
     (name "r-plotrix")
-    (version "3.7-5")
+    (version "3.7-6")
     (source (origin
               (method url-fetch)
               (uri (cran-uri "plotrix" version))
               (sha256
                (base32
-                "0k6ivryac1k81z2dijjds376a9jxwk8rf5g48snj67cnjffkybxj"))))
+                "0ijfjlr7ls5hvfyzdmwab6bx0w3nvp0c8fgynj4355cj8mbzgmc3"))))
     (build-system r-build-system)
     (home-page "https://cran.r-project.org/web/packages/plotrix")
     (synopsis "Various plotting functions")
@@ -3004,14 +3004,14 @@ statements.")
 (define-public r-segmented
   (package
     (name "r-segmented")
-    (version "0.5-4.0")
+    (version "1.0-0")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "segmented" version))
        (sha256
         (base32
-         "0wa0xjda2j33284jkp5hj1wdjysc5f4paj1s1lcixgawj4ckmxkz"))))
+         "1igsfkffpa60zn6j45lhw1zgr5pz6rjknv2f3sylnx5l9fdwibgf"))))
     (build-system r-build-system)
     (home-page "https://cran.r-project.org/web/packages/segmented")
     (synopsis "Regression models with breakpoints estimation")
@@ -3622,13 +3622,13 @@ vignettes.")
 (define-public r-mvtnorm
   (package
     (name "r-mvtnorm")
-    (version "1.0-10")
+    (version "1.0-11")
     (source (origin
               (method url-fetch)
               (uri (cran-uri "mvtnorm" version))
               (sha256
                (base32
-                "04md0wmqgif24g0a4hx19ifn4kk8nx10986vf2d9vascig6ikpri"))))
+                "0lkjph661blc1nwfzg9w48a60wvj6ffh4zjwlisvracsx4nn2883"))))
     (build-system r-build-system)
     (inputs
      `(("gfortran" ,gfortran)))
@@ -4748,14 +4748,14 @@ models, generalized linear models and model-based clustering.")
 (define-public r-mclust
   (package
     (name "r-mclust")
-    (version "5.4.3")
+    (version "5.4.4")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "mclust" version))
        (sha256
         (base32
-         "18x5ych9zi3y87rxi4pf6f23sl2918dp9xxpw1pqa7p7drw817p6"))))
+         "039ymr57bq5327gypizw0v2qb81j6bkqhjdh8yj23qa5sh51phyc"))))
     (build-system r-build-system)
     (native-inputs
      `(("gfortran" ,gfortran)))
@@ -4967,14 +4967,14 @@ of the points.")
 (define-public r-fpc
   (package
     (name "r-fpc")
-    (version "2.2-2")
+    (version "2.2-3")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "fpc" version))
        (sha256
         (base32
-         "1lzqxi2jzc753j4356b949isx2nccd32mw2ch665q78nxccp145n"))))
+         "1dy3pla4jjgs46izqg2kxajlxr80sbr9896jbzb1qszrdx7af041"))))
     (build-system r-build-system)
     (propagated-inputs
      `(("r-class" ,r-class)
@@ -4984,7 +4984,6 @@ of the points.")
        ("r-kernlab" ,r-kernlab)
        ("r-mass" ,r-mass)
        ("r-mclust" ,r-mclust)
-       ("r-mvtnorm" ,r-mvtnorm)
        ("r-prabclus" ,r-prabclus)
        ("r-robustbase" ,r-robustbase)))
     (home-page "https://cran.r-project.org/web/packages/fpc")
@@ -5138,14 +5137,14 @@ using modular prediction and response module classes.")
 (define-public r-quantreg
   (package
     (name "r-quantreg")
-    (version "5.40")
+    (version "5.41")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "quantreg" version))
        (sha256
         (base32
-         "1srni6lkgvy44ljxndz2j9ca702z2wy81f6z6mbbi6h06ni11qw6"))))
+         "110ax3ngn6i94h7iw7ha67kfsmj94hycp7lk62nmyvkp34vpfykh"))))
     (build-system r-build-system)
     (native-inputs
      `(("gfortran" ,gfortran)))
diff --git a/gnu/packages/textutils.scm b/gnu/packages/textutils.scm
index 79835e8578..d1dc14e6d7 100644
--- a/gnu/packages/textutils.scm
+++ b/gnu/packages/textutils.scm
@@ -140,32 +140,35 @@ libenca and several charset conversion libraries and tools.")
 (define-public utf8proc
   (package
     (name "utf8proc")
-    (version "2.1.1")
+    (version "2.4.0")
     (source
      (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://github.com/JuliaLang/utf8proc/archive/v"
-             version ".tar.gz"))
-       (file-name (string-append name "-" version ".tar.gz"))
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/JuliaStrings/utf8proc")
+             (commit (string-append "v" version))))
+       (file-name (git-file-name name version))
        (sha256
-        (base32 "1cnpigrazhslw65s4j1a56j7p6d7d61wsxxjf1218i9mkwv2yw17"))))
+        (base32 "1i42hqwc8znqii9brangwkxk5cyc2lk95ip405fg88zr7z2ncr34"))))
     (build-system gnu-build-system)
-    (inputs                 ; test data that is otherwise downloaded with curl
+    (native-inputs           ;test data that is otherwise downloaded with curl
      `(("NormalizationTest.txt"
         ,(origin
            (method url-fetch)
-           (uri (string-append "http://www.unicode.org/Public/9.0.0/ucd/"
+           (uri (string-append "https://www.unicode.org/Public/12.1.0/ucd/"
                                "NormalizationTest.txt"))
            (sha256
-            (base32 "1fxrz0bilsbwl685336aqi88k62i6nqhm62rvy4zhg3bcm4dhj1d"))))
+            (base32 "0hb97k9xv1lr847hwz0719ksqy39s47xw6k01dgs1368jdibvawc"))))
        ("GraphemeBreakTest.txt"
         ,(origin
            (method url-fetch)
-           (uri (string-append "http://www.unicode.org/Public/9.0.0/ucd/"
+           (uri (string-append "https://www.unicode.org/Public/12.1.0/ucd/"
                                "auxiliary/GraphemeBreakTest.txt"))
            (sha256
-            (base32 "0qbhyhmf0778lc2hcwlpizrvmdxwpk959v2q2wb8abv09ba7wvn7"))))))
+            (base32 "0qc90ppmrwfn3y9cdn8jcjrn7qpdf0fhxkwh945yp4rvh37mbgcm"))))
+
+       ;; For tests.
+       ("perl" ,perl)))
     (arguments
      '(#:make-flags (list "CC=gcc"
                           (string-append "prefix=" (assoc-ref %outputs "out")))
@@ -180,8 +183,9 @@ libenca and several charset conversion libraries and tools.")
                        '("NormalizationTest.txt" "GraphemeBreakTest.txt"))
              (substitute* "data/GraphemeBreakTest.txt"
                (("÷") "/")
-               (("×") "+")))))))
-    (home-page "https://julialang.org/utf8proc/")
+               (("×") "+"))
+             #t)))))
+    (home-page "https://juliastrings.github.io/utf8proc/")
     (synopsis "C library for processing UTF-8 Unicode data")
     (description "utf8proc is a small C library that provides Unicode
 normalization, case-folding, and other operations for data in the UTF-8
diff --git a/gnu/packages/tls.scm b/gnu/packages/tls.scm
index df04cbd9ab..4b26be85ce 100644
--- a/gnu/packages/tls.scm
+++ b/gnu/packages/tls.scm
@@ -616,14 +616,14 @@ certificates for free.")
 (define-public perl-net-ssleay
   (package
     (name "perl-net-ssleay")
-    (version "1.85")
+    (version "1.88")
     (source (origin
               (method url-fetch)
-              (uri (string-append "mirror://cpan/authors/id/M/MI/MIKEM/"
+              (uri (string-append "mirror://cpan/authors/id/C/CH/CHRISN/"
                                   "Net-SSLeay-" version ".tar.gz"))
               (sha256
                (base32
-                "1j5h4ycm8538397l204d2d5fkm9595aj174pj7bkpbhwzfwqi0cx"))))
+                "1pfgh4h3szcpvqlcimc60pjbk9zwls99x5863sva0wc47i4dl010"))))
     (build-system perl-build-system)
     (inputs `(("openssl" ,openssl)))
     (arguments
@@ -807,7 +807,7 @@ then ported to the GNU / Linux environment.")
 (define-public mbedtls-apache
   (package
     (name "mbedtls-apache")
-    (version "2.16.1")
+    (version "2.16.2")
     (source
      (origin
        (method url-fetch)
@@ -817,7 +817,7 @@ then ported to the GNU / Linux environment.")
                            version "-apache.tgz"))
        (sha256
         (base32
-         "08zz88gcb2jmpfsgy5b6qc3li6l39yw1dbimd18aziyd889nvl7b"))))
+         "1906hbwlkq32075hca4vjad03dcc36aycvmaz8yvhr3ygg6lz0x6"))))
     (build-system cmake-build-system)
     (arguments
      `(#:configure-flags
diff --git a/gnu/packages/upnp.scm b/gnu/packages/upnp.scm
index 3f3d80f576..a085fe9747 100644
--- a/gnu/packages/upnp.scm
+++ b/gnu/packages/upnp.scm
@@ -32,14 +32,14 @@
 (define-public miniupnpc
   (package
     (name "miniupnpc")
-    (version "2.1.20190408")
+    (version "2.1.20190625")
     (source
      (origin
        (method url-fetch)
        (uri (string-append "https://miniupnp.tuxfamily.org/files/"
                            name "-" version ".tar.gz"))
        (sha256
-        (base32 "1v0l2m8j7r6jiy871d6v11ls243xqn6s3856iwd3bmk5c37npi50"))))
+        (base32 "1yqp0d8x5ldjfma5x2vhpg1aaafdg0470ismccixww3rzpbza8w7"))))
     (build-system gnu-build-system)
     (native-inputs
      `(("python" ,python-2)))
diff --git a/gnu/packages/vulkan.scm b/gnu/packages/vulkan.scm
index 6ae9ba9b87..c16535f704 100644
--- a/gnu/packages/vulkan.scm
+++ b/gnu/packages/vulkan.scm
@@ -159,7 +159,7 @@ interpretation of the specifications for these languages.")
 (define-public vulkan-headers
   (package
     (name "vulkan-headers")
-    (version "1.1.107")
+    (version "1.1.112")
     (source
      (origin
        (method git-fetch)
@@ -169,7 +169,7 @@ interpretation of the specifications for these languages.")
        (file-name (git-file-name name version))
        (sha256
         (base32
-         "0kyf83n6fghqmjj5jbwhy08yq5sl598qnmw3kbavrnw9avqqm0c4"))))
+         "0iia2wlq38hvxwip6r3k5946ylrlk42fw50mhf0pdjxjh02p8zn5"))))
     (build-system cmake-build-system)
     (arguments
      `(#:tests? #f))                    ; No tests.
@@ -193,7 +193,7 @@ interpretation of the specifications for these languages.")
        (file-name (git-file-name name version))
        (sha256
         (base32
-         "1p64k9x5r7nsrs0cn6d61687xbajqvsm78xk6j85w9wfin5dxs30"))))
+         "1819bgmpjlikcc25bkmwwb7mp1rlyrq2v74wybg1g40ix70v0m0d"))))
     (build-system cmake-build-system)
     (arguments
      `(#:tests? #f ;FIXME: 23/39 tests fail.  Try "tests/run_all_tests.sh".
@@ -203,6 +203,28 @@ interpretation of the specifications for these languages.")
            (lambda* (#:key inputs #:allow-other-keys)
              ;; Remove lines trying to build in a git commit id.
              (substitute* "CMakeLists.txt" ((".*spirv_tools_commit_id.h.*") ""))
+             #t))
+         ;; Make sure that the files needed for Mesa's Vulkan overlay are availabe.
+         (add-after 'unpack 'copy-headers1
+           (lambda* (#:key outputs #:allow-other-keys)
+             (install-file "tests/layers/vk_layer_data.h"
+                           (string-append (assoc-ref %outputs "out")
+                                          "/include/vulkan"))
+             (install-file "tests/layers/vk_layer_extension_utils.h"
+                           (string-append (assoc-ref %outputs "out")
+                                          "/include/vulkan"))
+             (install-file "loader/vk_loader_platform.h"
+                           (string-append (assoc-ref %outputs "out")
+                                          "/include/vulkan"))
+             #t))
+         (add-after 'build 'copy-headers2
+           (lambda* (#:key outputs #:allow-other-keys)
+             (install-file "vk_layer_dispatch_table.h"
+                           (string-append (assoc-ref %outputs "out")
+                                          "/include/vulkan"))
+             (install-file "vk_dispatch_table_helper.h"
+                           (string-append (assoc-ref %outputs "out")
+                                          "/include/vulkan"))
              #t)))
        #:configure-flags (list
                           "-DBUILD_TESTS=OFF" ; FIXME: Needs 'googletest' submodule.
@@ -244,7 +266,7 @@ and the ICD.")
        (file-name (git-file-name name version))
        (sha256
         (base32
-         "1mak96jdg3wv043b4jxyv1fm2cz4nnallg0yb90my3yp5q64grrw"))))
+         "0an9hqvvpfmfld2pkszzwi7ccb9g2ijjqqzlj24dqg9kqnmcr3x4"))))
     (build-system cmake-build-system)
     (inputs
      `(("glslang" ,glslang)
diff --git a/gnu/packages/web.scm b/gnu/packages/web.scm
index 6a820addca..7731b1fdca 100644
--- a/gnu/packages/web.scm
+++ b/gnu/packages/web.scm
@@ -202,14 +202,14 @@ Interface} specification.")
     ;; ’stable’ and recommends that “in general you deploy the NGINX mainline
     ;; branch at all times” (https://www.nginx.com/blog/nginx-1-6-1-7-released/)
     ;; Consider updating the nginx-documentation package together with this one.
-    (version "1.17.0")
+    (version "1.17.1")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://nginx.org/download/nginx-"
                                   version ".tar.gz"))
               (sha256
                (base32
-                "1aqgmrjzmklmv2iiyirk2h0hy35v1a76gczhjkxnms2krl35s6z2"))))
+                "0gp7cy2bbn8yi1wapjzssf4bhmn4d4vphdb0k1wiaq2fa6s2a63g"))))
     (build-system gnu-build-system)
     (inputs `(("openssl" ,openssl)
               ("pcre" ,pcre)
diff --git a/gnu/packages/webkit.scm b/gnu/packages/webkit.scm
index 4b807cc09f..b258ac860c 100644
--- a/gnu/packages/webkit.scm
+++ b/gnu/packages/webkit.scm
@@ -59,15 +59,14 @@
 (define-public webkitgtk
   (package
     (name "webkitgtk")
-    (version "2.24.2")
+    (version "2.24.3")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://www.webkitgtk.org/releases/"
                                   name "-" version ".tar.xz"))
-              (patches (search-patches "webkitgtk-sans-gstreamer-gl.patch"))
               (sha256
                (base32
-                "071jnjvjq6wsxx1jh4ql3j53h1nhphs5ga67fa5i9xjvs3qb3701"))))
+                "0lbcrw5axwrbrajxq7fqywfyh0djqi23ynzb5wi5ghw2grnp83cl"))))
     (build-system cmake-build-system)
     (outputs '("out" "doc"))
     (arguments
diff --git a/gnu/services/base.scm b/gnu/services/base.scm
index 3c1827fb70..537d30add5 100644
--- a/gnu/services/base.scm
+++ b/gnu/services/base.scm
@@ -1533,7 +1533,7 @@ GID."
     (('gnu rest ...) #t)
     (rest #f)))
 
-(define (hydra-key-authorization keys guix)
+(define (substitute-key-authorization keys guix)
   "Return a gexp with code to register KEYS, a list of files containing 'guix
 archive' public keys, with GUIX."
   (define default-acl
@@ -1570,8 +1570,7 @@ archive' public keys, with GUIX."
 
 (define %default-authorized-guix-keys
   ;; List of authorized substitute keys.
-  (list (file-append guix "/share/guix/hydra.gnu.org.pub")
-        (file-append guix "/share/guix/berlin.guixsd.org.pub")))
+  (list (file-append guix "/share/guix/berlin.guixsd.org.pub")))
 
 (define-record-type* <guix-configuration>
   guix-configuration make-guix-configuration
@@ -1688,7 +1687,7 @@ archive' public keys, with GUIX."
 
      ;; Optionally authorize substitute server keys.
      (if authorize-key?
-         (hydra-key-authorization keys guix)
+         (substitute-key-authorization keys guix)
          #~#f))))
 
 (define* (references-file item #:optional (name "references"))
diff --git a/gnu/services/databases.scm b/gnu/services/databases.scm
index 7113f1f2a1..ec31489d48 100644
--- a/gnu/services/databases.scm
+++ b/gnu/services/databases.scm
@@ -5,6 +5,7 @@
 ;;; Copyright © 2017 Christopher Baines <mail@cbaines.net>
 ;;; Copyright © 2018 Clément Lassieur <clement@lassieur.org>
 ;;; Copyright © 2018 Julien Lepiller <julien@lepiller.eu>
+;;; Copyright © 2019 Robert Vollmert <rob@vllmrt.net>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -91,9 +92,9 @@
 (define %default-postgres-hba
   (plain-file "pg_hba.conf"
               "
-local	all	all			trust
-host	all	all	127.0.0.1/32 	trust
-host	all	all	::1/128 	trust"))
+local	all	all			peer
+host	all	all	127.0.0.1/32 	md5
+host	all	all	::1/128 	md5"))
 
 (define %default-postgres-ident
   (plain-file "pg_ident.conf"
diff --git a/gnu/system/install.scm b/gnu/system/install.scm
index 453b0bdd6d..912096027f 100644
--- a/gnu/system/install.scm
+++ b/gnu/system/install.scm
@@ -330,8 +330,8 @@ Access documentation at any time by pressing Alt-F2.\x1b[0m
           ;; The usual services.
           (syslog-service)
 
-          ;; The build daemon.  Register the hydra.gnu.org key as trusted.
-          ;; This allows the installation process to use substitutes by
+          ;; The build daemon.  Register the default substitute server key(s)
+          ;; as trusted to allow the installation process to use substitutes by
           ;; default.
           (service guix-service-type
                    (guix-configuration (authorize-key? #t)))
diff --git a/guix/build-system/python.scm b/guix/build-system/python.scm
index b753940bad..e39c06528e 100644
--- a/guix/build-system/python.scm
+++ b/guix/build-system/python.scm
@@ -50,7 +50,7 @@
   "Return a URI string for the Python package hosted on the Python Package
 Index (PyPI) corresponding to NAME and VERSION.  EXTENSION is the file name
 extension, such as '.tar.gz'."
-  (string-append "https://pypi.org/packages/source/"
+  (string-append "https://files.pythonhosted.org/packages/source/"
                  (string-take name 1) "/" name "/"
                  name "-" version extension))
 
diff --git a/guix/build/download-nar.scm b/guix/build/download-nar.scm
index 681f22238d..cb146038ad 100644
--- a/guix/build/download-nar.scm
+++ b/guix/build/download-nar.scm
@@ -42,10 +42,10 @@
   "Return the fallback nar URL for ITEM--e.g.,
 \"/gnu/store/cabbag3…-foo-1.2-checkout\"."
   ;; Here we hard-code nar URLs without checking narinfos.  That's probably OK
-  ;; though.
+  ;; though.  Use berlin.guixsd.org instead of its ci.guix.gnu.org front end to
+  ;; avoid sending these requests to CDN providers without user consent.
   ;; TODO: Use HTTPS?  The downside is the extra dependency.
-  (let ((bases '("http://mirror.hydra.gnu.org/guix"
-                 "http://berlin.guixsd.org"))
+  (let ((bases '("http://berlin.guixsd.org"))
         (item  (basename item)))
     (append (map (cut string-append <> "/nar/gzip/" item) bases)
             (map (cut string-append <> "/nar/" item) bases))))
diff --git a/guix/derivations.scm b/guix/derivations.scm
index 433b4551a5..ebeac31877 100644
--- a/guix/derivations.scm
+++ b/guix/derivations.scm
@@ -1011,8 +1011,8 @@ recursively."
 
 (define* (build-derivations store derivations
                             #:optional (mode (build-mode normal)))
-  "Build DERIVATIONS, a list of <derivation> objects, .drv file names, or
-derivation/output pairs, using the specified MODE."
+  "Build DERIVATIONS, a list of <derivation> or <derivation-input> objects,
+.drv file names, or derivation/output pairs, using the specified MODE."
   (build-things store (map (match-lambda
                             ((? derivation? drv)
                              (derivation-file-name drv))
diff --git a/guix/download.scm b/guix/download.scm
index 7782693f23..00afd2e032 100644
--- a/guix/download.scm
+++ b/guix/download.scm
@@ -395,7 +395,6 @@
                        '(guix base16) '(bytevector->base16-string))
 
      (list (guix-publish "ci.guix.gnu.org")
-           (guix-publish "mirror.hydra.gnu.org")
            (lambda (file algo hash)
              ;; 'tarballs.nixos.org' supports several algorithms.
              (string-append "https://tarballs.nixos.org/"
diff --git a/guix/grafts.scm b/guix/grafts.scm
index 3b43e11425..adc7bfafae 100644
--- a/guix/grafts.scm
+++ b/guix/grafts.scm
@@ -163,16 +163,11 @@ references.  Call REFERENCES to get the list of references."
                  items))))
     (remove (cut member <> self) refs)))
 
-(define (references-oracle store drv)
-  "Return a one-argument procedure that, when passed the file name of DRV's
-outputs or their dependencies, returns the list of references of that item.
-Use either local info or substitute info; build DRV if no information is
-available."
-  (define (output-paths drv)
-    (match (derivation->output-paths drv)
-      (((names . items) ...)
-       items)))
-
+(define (references-oracle store input)
+  "Return a one-argument procedure that, when passed the output file names of
+INPUT, a derivation input, or their dependencies, returns the list of
+references of that item.  Use either local info or substitute info; build
+INPUT if no information is available."
   (define (references* items)
     (guard (c ((store-protocol-error? c)
                ;; As a last resort, build DRV and query the references of the
@@ -181,13 +176,14 @@ available."
                ;; Warm up the narinfo cache, otherwise each derivation build
                ;; will result in one HTTP request to get one narinfo, which is
                ;; much less efficient than fetching them all upfront.
-               (substitution-oracle store (list drv))
+               (substitution-oracle store
+                                    (list (derivation-input-derivation input)))
 
-               (and (build-derivations store (list drv))
+               (and (build-derivations store (list input))
                     (map (cut references store <>) items))))
       (references/substitutes store items)))
 
-  (let loop ((items (output-paths drv))
+  (let loop ((items (derivation-input-output-paths input))
              (result vlist-null))
     (match items
       (()
@@ -324,7 +320,7 @@ DRV, and graft DRV itself to refer to those grafted dependencies."
   ;; upfront to have as much parallelism as possible when querying substitute
   ;; info or when building DRV.
   (define references
-    (references-oracle store drv))
+    (references-oracle store (derivation-input drv outputs)))
 
   (match (run-with-state
              (cumulative-grafts store drv grafts references
diff --git a/guix/import/crate.scm b/guix/import/crate.scm
index 9a73d9fe16..29318aac0e 100644
--- a/guix/import/crate.scm
+++ b/guix/import/crate.scm
@@ -85,14 +85,14 @@
     (()
      '())
     ((package-inputs ...)
-     `((#:cargo-inputs ,package-inputs)))))
+     `(#:cargo-inputs ,package-inputs))))
 
 (define (maybe-cargo-development-inputs package-names)
   (match (package-names->package-inputs package-names)
     (()
      '())
     ((package-inputs ...)
-     `((#:cargo-development-inputs ,package-inputs)))))
+     `(#:cargo-development-inputs ,package-inputs))))
 
 (define (maybe-arguments arguments)
   (match arguments
diff --git a/guix/import/pypi.scm b/guix/import/pypi.scm
index 3a20fc4b9b..ab7a024ee0 100644
--- a/guix/import/pypi.scm
+++ b/guix/import/pypi.scm
@@ -4,6 +4,7 @@
 ;;; Copyright © 2015, 2016, 2017 Ludovic Courtès <ludo@gnu.org>
 ;;; Copyright © 2017 Mathieu Othacehe <m.othacehe@gmail.com>
 ;;; Copyright © 2018 Ricardo Wurmus <rekado@elephly.net>
+;;; Copyright © 2019 Maxim Cournoyer <maxim.cournoyer@gmail.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -21,25 +22,22 @@
 ;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
 
 (define-module (guix import pypi)
-  #:use-module (ice-9 binary-ports)
   #:use-module (ice-9 match)
-  #:use-module (ice-9 pretty-print)
   #:use-module (ice-9 regex)
   #:use-module (ice-9 receive)
   #:use-module ((ice-9 rdelim) #:select (read-line))
   #:use-module (srfi srfi-1)
+  #:use-module (srfi srfi-11)
   #:use-module (srfi srfi-26)
   #:use-module (srfi srfi-34)
   #:use-module (srfi srfi-35)
-  #:use-module (rnrs bytevectors)
-  #:use-module (json)
-  #:use-module (web uri)
   #:use-module (guix ui)
   #:use-module (guix utils)
   #:use-module ((guix build utils)
                 #:select ((package-name->name+version
                            . hyphen-package-name->name+version)
-                          find-files))
+                          find-files
+                          invoke))
   #:use-module (guix import utils)
   #:use-module ((guix download) #:prefix download:)
   #:use-module (guix import json)
@@ -47,7 +45,10 @@
   #:use-module (guix upstream)
   #:use-module ((guix licenses) #:prefix license:)
   #:use-module (guix build-system python)
-  #:export (guix-package->pypi-name
+  #:export (parse-requires.txt
+            parse-wheel-metadata
+            specification->requirement-name
+            guix-package->pypi-name
             pypi-recursive-import
             pypi->guix-package
             %pypi-updater))
@@ -108,86 +109,180 @@ package on PyPI."
     ((name version _ ...)
      (string-append name "-" version ".dist-info"))))
 
-(define (maybe-inputs package-inputs)
+(define (maybe-inputs package-inputs input-type)
   "Given a list of PACKAGE-INPUTS, tries to generate the 'inputs' field of a
-package definition."
+package definition.  INPUT-TYPE, a symbol, is used to populate the name of
+the input field."
   (match package-inputs
     (()
      '())
     ((package-inputs ...)
-     `((propagated-inputs (,'quasiquote ,package-inputs))))))
+     `((,input-type (,'quasiquote ,package-inputs))))))
 
-(define (guess-requirements source-url wheel-url tarball)
-  "Given SOURCE-URL, WHEEL-URL and a TARBALL of the package, return a list
-of the required packages specified in the requirements.txt file.  TARBALL will
-be extracted in a temporary directory."
+(define %requirement-name-regexp
+  ;; Regexp to match the requirement name in a requirement specification.
 
-  (define (tarball-directory url)
-    ;; Given the URL of the package's tarball, return the name of the directory
-    ;; that will be created upon decompressing it. If the filetype is not
-    ;; supported, return #f.
-    ;; TODO: Support more archive formats.
-    (let ((basename (substring url (+ 1 (string-rindex url #\/)))))
-      (cond
-       ((string-suffix? ".tar.gz" basename)
-        (string-drop-right basename 7))
-       ((string-suffix? ".tar.bz2" basename)
-        (string-drop-right basename 8))
-       (else
-        (begin
-          (warning (G_ "Unsupported archive format: \
-cannot determine package dependencies"))
-          #f)))))
-
-  (define (clean-requirement s)
-    ;; Given a requirement LINE, as can be found in a Python requirements.txt
-    ;; file, remove everything other than the actual name of the required
-    ;; package, and return it.
-    (string-take s
-      (or (string-index s (lambda (chr) (member chr '(#\space #\> #\= #\<))))
-          (string-length s))))
+  ;; Some grammar, taken from PEP-0508 (see:
+  ;; https://www.python.org/dev/peps/pep-0508/).
+
+  ;; Using this grammar makes the PEP-0508 regexp easier to understand for
+  ;; humans.  The use of a regexp is preferred to more primitive string
+  ;; manipulations because we can more directly match what upstream uses
+  ;; (again, per PEP-0508).  The regexp approach is also easier to extend,
+  ;; should we want to implement more completely the grammar of PEP-0508.
+
+  ;; The unified rule can be expressed as:
+  ;; specification = wsp* ( url_req | name_req ) wsp*
+
+  ;; where url_req is:
+  ;; url_req = name wsp* extras? wsp* urlspec wsp+ quoted_marker?
+
+  ;; and where name_req is:
+  ;; name_req = name wsp* extras? wsp* versionspec? wsp* quoted_marker?
+
+  ;; Thus, we need only matching NAME, which is expressed as:
+  ;; identifer_end = letterOrDigit | (('-' | '_' | '.' )* letterOrDigit)
+  ;; identifier    = letterOrDigit identifier_end*
+  ;; name          = identifier
+  (let* ((letter-or-digit "[A-Za-z0-9]")
+         (identifier-end (string-append "(" letter-or-digit "|"
+                                        "[-_.]*" letter-or-digit ")"))
+         (identifier (string-append "^" letter-or-digit identifier-end "*"))
+         (name identifier))
+    (make-regexp name)))
+
+(define (specification->requirement-name spec)
+  "Given a specification SPEC, return the requirement name."
+  (match:substring
+   (or (regexp-exec %requirement-name-regexp spec)
+       (error (G_ "Could not extract requirement name in spec:") spec))))
+
+(define (test-section? name)
+  "Return #t if the section name contains 'test' or 'dev'."
+  (any (cut string-contains-ci name <>)
+       '("test" "dev")))
+
+(define (parse-requires.txt requires.txt)
+  "Given REQUIRES.TXT, a Setuptools requires.txt file, return a list of lists
+of requirements.
+
+The first list contains the required dependencies while the second the
+optional test dependencies.  Note that currently, optional, non-test
+dependencies are omitted since these can be difficult or expensive to
+satisfy."
 
   (define (comment? line)
     ;; Return #t if the given LINE is a comment, #f otherwise.
-    (eq? (string-ref (string-trim line) 0) #\#))
-
-  (define (read-requirements requirements-file)
-    ;; Given REQUIREMENTS-FILE, a Python requirements.txt file, return a list
-    ;; of name/variable pairs describing the requirements.
-    (call-with-input-file requirements-file
-      (lambda (port)
-        (let loop ((result '()))
-          (let ((line (read-line port)))
-            (if (eof-object? line)
-                result
-                (cond
-                 ((or (string-null? line) (comment? line))
-                  (loop result))
-                 (else
-                  (loop (cons (clean-requirement line)
-                              result))))))))))
+    (string-prefix? "#" (string-trim line)))
+
+  (define (section-header? line)
+    ;; Return #t if the given LINE is a section header, #f otherwise.
+    (string-prefix? "[" (string-trim line)))
+
+  (call-with-input-file requires.txt
+    (lambda (port)
+      (let loop ((required-deps '())
+                 (test-deps '())
+                 (inside-test-section? #f)
+                 (optional? #f))
+        (let ((line (read-line port)))
+          (cond
+           ((eof-object? line)
+            ;; Duplicates can occur, since the same requirement can be
+            ;; listed multiple times with different conditional markers, e.g.
+            ;; pytest >= 3 ; python_version >= "3.3"
+            ;; pytest < 3 ; python_version < "3.3"
+            (map (compose reverse delete-duplicates)
+                 (list required-deps test-deps)))
+           ((or (string-null? line) (comment? line))
+            (loop required-deps test-deps inside-test-section? optional?))
+           ((section-header? line)
+            ;; Encountering a section means that all the requirements
+            ;; listed below are optional. Since we want to pick only the
+            ;; test dependencies from the optional dependencies, we must
+            ;; track those separately.
+            (loop required-deps test-deps (test-section? line) #t))
+           (inside-test-section?
+            (loop required-deps
+                  (cons (specification->requirement-name line)
+                        test-deps)
+                  inside-test-section? optional?))
+           ((not optional?)
+            (loop (cons (specification->requirement-name line)
+                        required-deps)
+                  test-deps inside-test-section? optional?))
+           (optional?
+            ;; Skip optional items.
+            (loop required-deps test-deps inside-test-section? optional?))
+           (else
+            (warning (G_ "parse-requires.txt reached an unexpected \
+condition on line ~a~%") line))))))))
+
+(define (parse-wheel-metadata metadata)
+  "Given METADATA, a Wheel metadata file, return a list of lists of
+requirements.
+
+Refer to the documentation of PARSE-REQUIRES.TXT for a description of the
+returned value."
+  ;; METADATA is a RFC-2822-like, header based file.
+
+  (define (requires-dist-header? line)
+    ;; Return #t if the given LINE is a Requires-Dist header.
+    (string-match "^Requires-Dist: " line))
+
+  (define (requires-dist-value line)
+    (string-drop line (string-length "Requires-Dist: ")))
+
+  (define (extra? line)
+    ;; Return #t if the given LINE is an "extra" requirement.
+    (string-match "extra == '(.*)'" line))
+
+  (define (test-requirement? line)
+    (and=> (match:substring (extra? line) 1) test-section?))
+
+  (call-with-input-file metadata
+    (lambda (port)
+      (let loop ((required-deps '())
+                 (test-deps '()))
+        (let ((line (read-line port)))
+          (cond
+           ((eof-object? line)
+            (map (compose reverse delete-duplicates)
+                 (list required-deps test-deps)))
+           ((and (requires-dist-header? line) (not (extra? line)))
+            (loop (cons (specification->requirement-name
+                         (requires-dist-value line))
+                        required-deps)
+                  test-deps))
+           ((and (requires-dist-header? line) (test-requirement? line))
+            (loop required-deps
+                  (cons (specification->requirement-name (requires-dist-value line))
+                        test-deps)))
+           (else
+            (loop required-deps test-deps)))))))) ;skip line
+
+(define (guess-requirements source-url wheel-url archive)
+  "Given SOURCE-URL, WHEEL-URL and an ARCHIVE of the package, return a list
+of the required packages specified in the requirements.txt file.  ARCHIVE will
+be extracted in a temporary directory."
 
   (define (read-wheel-metadata wheel-archive)
     ;; Given WHEEL-ARCHIVE, a ZIP Python wheel archive, return the package's
-    ;; requirements.
+    ;; requirements, or #f if the metadata file contained therein couldn't be
+    ;; extracted.
     (let* ((dirname (wheel-url->extracted-directory wheel-url))
-           (json-file (string-append dirname "/metadata.json")))
-      (and (zero? (system* "unzip" "-q" wheel-archive json-file))
-           (dynamic-wind
-             (const #t)
-             (lambda ()
-               (call-with-input-file json-file
-                 (lambda (port)
-                   (let* ((metadata (json->scm port))
-                          (run_requires (hash-ref metadata "run_requires"))
-                          (requirements (if run_requires
-                                            (hash-ref (list-ref run_requires 0)
-                                                       "requires")
-                                            '())))
-                     (map clean-requirement requirements)))))
-             (lambda ()
-               (delete-file json-file)
-               (rmdir dirname))))))
+           (metadata (string-append dirname "/METADATA")))
+      (call-with-temporary-directory
+       (lambda (dir)
+         (if (zero?
+              (parameterize ((current-error-port (%make-void-port "rw+"))
+                             (current-output-port (%make-void-port "rw+")))
+                (system* "unzip" wheel-archive "-d" dir metadata)))
+             (parse-wheel-metadata (string-append dir "/" metadata))
+             (begin
+               (warning
+                (G_ "Failed to extract file: ~a from wheel.~%") metadata)
+               #f))))))
 
   (define (guess-requirements-from-wheel)
     ;; Return the package's requirements using the wheel, or #f if an error
@@ -195,63 +290,68 @@ cannot determine package dependencies"))
     (call-with-temporary-output-file
      (lambda (temp port)
        (if wheel-url
-         (and (url-fetch wheel-url temp)
-              (read-wheel-metadata temp))
-         #f))))
+           (and (url-fetch wheel-url temp)
+                (read-wheel-metadata temp))
+           #f))))
 
   (define (guess-requirements-from-source)
     ;; Return the package's requirements by guessing them from the source.
-    (let ((dirname (tarball-directory source-url)))
-      (if (string? dirname)
-          (call-with-temporary-directory
-           (lambda (dir)
-             (let* ((pypi-name (string-take dirname (string-rindex dirname #\-)))
-                    (req-files (list (string-append dirname "/requirements.txt")
-                                     (string-append dirname "/" pypi-name ".egg-info"
-                                                    "/requires.txt")))
-                    (exit-codes (map (lambda (file-name)
-                                       (parameterize ((current-error-port (%make-void-port "rw+"))
-                                                      (current-output-port (%make-void-port "rw+")))
-                                         (system* "tar" "xf" tarball "-C" dir file-name)))
-                                     req-files)))
-               ;; Only one of these files needs to exist.
-               (if (any zero? exit-codes)
-                   (match (find-files dir)
-                     ((file . _)
-                      (read-requirements file))
-                     (()
-                      (warning (G_ "No requirements file found.\n"))))
-                   (begin
-                     (warning (G_ "Failed to extract requirements files\n"))
-                     '())))))
-          '())))
-
-  ;; First, try to compute the requirements using the wheel, since that is the
-  ;; most reliable option. If a wheel is not provided for this package, try
-  ;; getting them by reading either the "requirements.txt" file or the
-  ;; "requires.txt" from the egg-info directory from the source tarball. Note
-  ;; that "requirements.txt" is not mandatory, so this is likely to fail.
+    (if (compressed-file? source-url)
+        (call-with-temporary-directory
+         (lambda (dir)
+           (parameterize ((current-error-port (%make-void-port "rw+"))
+                          (current-output-port (%make-void-port "rw+")))
+             (if (string=? "zip" (file-extension source-url))
+                 (invoke "unzip" archive "-d" dir)
+                 (invoke "tar" "xf" archive "-C" dir)))
+           (let ((requires.txt-files
+                  (find-files dir (lambda (abs-file-name _)
+		                    (string-match "\\.egg-info/requires.txt$"
+                                                  abs-file-name)))))
+             (match requires.txt-files
+               (()
+                (warning (G_ "Cannot guess requirements from source archive:\
+ no requires.txt file found.~%"))
+                (list '() '()))
+               (else (parse-requires.txt (first requires.txt-files)))))))
+        (begin
+          (warning (G_ "Unsupported archive format; \
+cannot determine package dependencies from source archive: ~a~%")
+                   (basename source-url))
+          (list '() '()))))
+
+  ;; First, try to compute the requirements using the wheel, else, fallback to
+  ;; reading the "requires.txt" from the egg-info directory from the source
+  ;; archive.
   (or (guess-requirements-from-wheel)
       (guess-requirements-from-source)))
 
-
-(define (compute-inputs source-url wheel-url tarball)
-  "Given the SOURCE-URL of an already downloaded TARBALL, return a list of
-name/variable pairs describing the required inputs of this package.  Also
+(define (compute-inputs source-url wheel-url archive)
+  "Given the SOURCE-URL and WHEEL-URL of an already downloaded ARCHIVE, return
+a pair of lists, each consisting of a list of name/variable pairs, for the
+propagated inputs and the native inputs, respectively.  Also
 return the unaltered list of upstream dependency names."
-  (let ((dependencies
-         (remove (cut string=? "argparse" <>)
-                 (guess-requirements source-url wheel-url tarball))))
-    (values (sort
-             (map (lambda (input)
-                    (let ((guix-name (python->package-name input)))
-                      (list guix-name (list 'unquote (string->symbol guix-name)))))
-                  dependencies)
-             (lambda args
-               (match args
-                 (((a _ ...) (b _ ...))
-                  (string-ci<? a b)))))
-            dependencies)))
+
+  (define (strip-argparse deps)
+    (remove (cut string=? "argparse" <>) deps))
+
+  (define (requirement->package-name/sort deps)
+    (sort
+     (map (lambda (input)
+            (let ((guix-name (python->package-name input)))
+              (list guix-name (list 'unquote (string->symbol guix-name)))))
+          deps)
+     (lambda args
+       (match args
+         (((a _ ...) (b _ ...))
+          (string-ci<? a b))))))
+
+  (define process-requirements
+    (compose requirement->package-name/sort strip-argparse))
+
+  (let ((dependencies (guess-requirements source-url wheel-url archive)))
+    (values (map process-requirements dependencies)
+            (concatenate dependencies))))
 
 (define (make-pypi-sexp name version source-url wheel-url home-page synopsis
                         description license)
@@ -260,29 +360,36 @@ VERSION, SOURCE-URL, HOME-PAGE, SYNOPSIS, DESCRIPTION, and LICENSE."
   (call-with-temporary-output-file
    (lambda (temp port)
      (and (url-fetch source-url temp)
-          (receive (input-package-names upstream-dependency-names)
+          (receive (guix-dependencies upstream-dependencies)
               (compute-inputs source-url wheel-url temp)
-            (values
-             `(package
-                (name ,(python->package-name name))
-                (version ,version)
-                (source (origin
-                          (method url-fetch)
-
-                          ;; Sometimes 'pypi-uri' doesn't quite work due to mixed
-                          ;; cases in NAME, for instance, as is the case with
-                          ;; "uwsgi".  In that case, fall back to a full URL.
-                          (uri (pypi-uri ,(string-downcase name) version))
-                          (sha256
-                           (base32
-                            ,(guix-hash-url temp)))))
-                (build-system python-build-system)
-                ,@(maybe-inputs input-package-names)
-                (home-page ,home-page)
-                (synopsis ,synopsis)
-                (description ,description)
-                (license ,(license->symbol license)))
-             upstream-dependency-names))))))
+            (match guix-dependencies
+              ((required-inputs test-inputs)
+               (values
+                `(package
+                   (name ,(python->package-name name))
+                   (version ,version)
+                   (source
+                    (origin
+                      (method url-fetch)
+                      ;; PyPI URL are case sensitive, but sometimes a project
+                      ;; named using mixed case has a URL using lower case, so
+                      ;; we must work around this inconsistency.  For actual
+                      ;; examples, compare the URLs of the "Deprecated" and
+                      ;; "uWSGI" PyPI packages.
+                      (uri ,(if (string-contains source-url name)
+                                `(pypi-uri ,name version)
+                                `(pypi-uri ,(string-downcase name) version)))
+                      (sha256
+                       (base32
+                        ,(guix-hash-url temp)))))
+                   (build-system python-build-system)
+                   ,@(maybe-inputs required-inputs 'propagated-inputs)
+                   ,@(maybe-inputs test-inputs 'native-inputs)
+                   (home-page ,home-page)
+                   (synopsis ,synopsis)
+                   (description ,description)
+                   (license ,(license->symbol license)))
+                upstream-dependencies))))))))
 
 (define pypi->guix-package
   (memoize
diff --git a/guix/self.scm b/guix/self.scm
index f9e65cce31..6a876bd822 100644
--- a/guix/self.scm
+++ b/guix/self.scm
@@ -577,9 +577,6 @@ load path."
                    ,(file-append* source "/etc/completion/zsh/_guix"))
                   ("share/fish/vendor_completions.d/guix.fish"
                    ,(file-append* source "/etc/completion/fish/guix.fish"))
-                  ("share/guix/hydra.gnu.org.pub"
-                   ,(file-append* source
-                                  "/etc/substitutes/hydra.gnu.org.pub"))
                   ("share/guix/berlin.guixsd.org.pub"
                    ,(file-append* source
                                   "/etc/substitutes/berlin.guixsd.org.pub"))
diff --git a/tests/crate.scm b/tests/crate.scm
index a4a328d507..72c3a13350 100644
--- a/tests/crate.scm
+++ b/tests/crate.scm
@@ -91,7 +91,7 @@
          ('build-system 'cargo-build-system)
          ('arguments
           ('quasiquote
-           (('#:cargo-inputs (("rust-bar" ('unquote rust-bar)))))))
+           ('#:cargo-inputs (("rust-bar" ('unquote rust-bar))))))
          ('home-page "http://example.com")
          ('synopsis "summary")
          ('description "summary")
diff --git a/tests/pypi.scm b/tests/pypi.scm
index 6daa44a6e7..43d45f1dd8 100644
--- a/tests/pypi.scm
+++ b/tests/pypi.scm
@@ -1,6 +1,7 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2014 David Thompson <davet@gnu.org>
 ;;; Copyright © 2016 Ricardo Wurmus <rekado@elephly.net>
+;;; Copyright © 2019 Maxim Cournoyer <maxim.cournoyer@gmail.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -20,10 +21,12 @@
 (define-module (test-pypi)
   #:use-module (guix import pypi)
   #:use-module (guix base32)
+  #:use-module (guix memoization)
   #:use-module (gcrypt hash)
+  #:use-module (guix memoization)
   #:use-module (guix tests)
   #:use-module (guix build-system python)
-  #:use-module ((guix build utils) #:select (delete-file-recursively which))
+  #:use-module ((guix build utils) #:select (delete-file-recursively which mkdir-p))
   #:use-module (srfi srfi-64)
   #:use-module (ice-9 match))
 
@@ -55,23 +58,64 @@
 (define test-source-hash
   "")
 
-(define test-requirements
-"# A comment
+(define test-specifications
+  '("Fizzy [foo, bar]"
+    "PickyThing<1.6,>1.9,!=1.9.6,<2.0a0,==2.4c1"
+    "SomethingWithMarker[foo]>1.0;python_version<\"2.7\""
+    "requests [security,tests] >= 2.8.1, == 2.8.* ; python_version < \"2.7\""
+    "pip @ https://github.com/pypa/pip/archive/1.3.1.zip#\
+sha1=da9234ee9982d4bbb3c72346a6de940a148ea686"))
+
+(define test-requires.txt "\
+# A comment
  # A comment after a space
-bar
-baz > 13.37")
+foo ~= 3
+bar != 2
 
-(define test-metadata
-  "{
-  \"run_requires\": [
-    {
-      \"requires\": [
-        \"bar\",
-        \"baz (>13.37)\"
-      ]
-    }
-  ]
-}")
+[test]
+pytest (>=2.5.0)
+")
+
+;; Beaker contains only optional dependencies.
+(define test-requires.txt-beaker "\
+[crypto]
+pycryptopp>=0.5.12
+
+[cryptography]
+cryptography
+
+[testsuite]
+Mock
+coverage
+")
+
+(define test-metadata "\
+Classifier: Programming Language :: Python :: 3.7
+Requires-Dist: baz ~= 3
+Requires-Dist: bar != 2
+Provides-Extra: test
+Requires-Dist: pytest (>=2.5.0) ; extra == 'test'
+")
+
+(define test-metadata-with-extras "
+Classifier: Programming Language :: Python :: 3.7
+Requires-Python: >=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*
+Requires-Dist: wrapt (<2,>=1)
+Requires-Dist: bar
+
+Provides-Extra: dev
+Requires-Dist: tox ; extra == 'dev'
+Requires-Dist: bumpversion (<1) ; extra == 'dev'
+")
+
+;;; Provides-Extra can appear before Requires-Dist.
+(define test-metadata-with-extras-jedi "\
+Requires-Python: >=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*
+Provides-Extra: testing
+Requires-Dist: parso (>=0.3.0)
+Provides-Extra: testing
+Requires-Dist: pytest (>=3.1.0); extra == 'testing'
+")
 
 (test-begin "pypi")
 
@@ -100,18 +144,48 @@ baz > 13.37")
                     (uri (list "https://bitheap.org/cram/cram-0.7.tar.gz"
                                (pypi-uri "cram" "0.7"))))))))
 
-(test-assert "pypi->guix-package"
+(test-equal "specification->requirement-name"
+  '("Fizzy" "PickyThing" "SomethingWithMarker" "requests" "pip")
+  (map specification->requirement-name test-specifications))
+
+(test-equal "parse-requires.txt"
+  (list '("foo" "bar") '("pytest"))
+  (mock ((ice-9 ports) call-with-input-file
+         call-with-input-string)
+        (parse-requires.txt test-requires.txt)))
+
+(test-equal "parse-requires.txt - Beaker"
+  (list '() '("Mock" "coverage"))
+  (mock ((ice-9 ports) call-with-input-file
+         call-with-input-string)
+        (parse-requires.txt test-requires.txt-beaker)))
+
+(test-equal "parse-wheel-metadata, with extras"
+  (list '("wrapt" "bar") '("tox" "bumpversion"))
+  (mock ((ice-9 ports) call-with-input-file
+         call-with-input-string)
+        (parse-wheel-metadata test-metadata-with-extras)))
+
+(test-equal "parse-wheel-metadata, with extras - Jedi"
+  (list '("parso") '("pytest"))
+  (mock ((ice-9 ports) call-with-input-file
+         call-with-input-string)
+        (parse-wheel-metadata test-metadata-with-extras-jedi)))
+
+(test-assert "pypi->guix-package, no wheel"
   ;; Replace network resources with sample data.
     (mock ((guix import utils) url-fetch
            (lambda (url file-name)
              (match url
                ("https://example.com/foo-1.0.0.tar.gz"
                 (begin
-                  (mkdir "foo-1.0.0")
-                  (with-output-to-file "foo-1.0.0/requirements.txt"
+                  ;; Unusual requires.txt location should still be found.
+                  (mkdir-p "foo-1.0.0/src/bizarre.egg-info")
+                  (with-output-to-file "foo-1.0.0/src/bizarre.egg-info/requires.txt"
                     (lambda ()
-                      (display test-requirements)))
-                  (system* "tar" "czvf" file-name "foo-1.0.0/")
+                      (display test-requires.txt)))
+                  (parameterize ((current-output-port (%make-void-port "rw+")))
+                    (system* "tar" "czvf" file-name "foo-1.0.0/"))
                   (delete-file-recursively "foo-1.0.0")
                   (set! test-source-hash
                     (call-with-input-file file-name port-sha256))))
@@ -139,7 +213,10 @@ baz > 13.37")
                      ('propagated-inputs
                       ('quasiquote
                        (("python-bar" ('unquote 'python-bar))
-                        ("python-baz" ('unquote 'python-baz)))))
+                        ("python-foo" ('unquote 'python-foo)))))
+                     ('native-inputs
+                      ('quasiquote
+                       (("python-pytest" ('unquote 'python-pytest)))))
                      ('home-page "http://example.com")
                      ('synopsis "summary")
                      ('description "summary")
@@ -157,27 +234,28 @@ baz > 13.37")
          (lambda (url file-name)
            (match url
              ("https://example.com/foo-1.0.0.tar.gz"
-               (begin
-                 (mkdir "foo-1.0.0")
-                 (with-output-to-file "foo-1.0.0/requirements.txt"
-                   (lambda ()
-                     (display test-requirements)))
-                 (system* "tar" "czvf" file-name "foo-1.0.0/")
-                 (delete-file-recursively "foo-1.0.0")
-                 (set! test-source-hash
-                       (call-with-input-file file-name port-sha256))))
+              (begin
+                (mkdir-p "foo-1.0.0/foo.egg-info/")
+                (with-output-to-file "foo-1.0.0/foo.egg-info/requires.txt"
+                  (lambda ()
+                    (display "wrong data to make sure we're testing wheels ")))
+                (parameterize ((current-output-port (%make-void-port "rw+")))
+                  (system* "tar" "czvf" file-name "foo-1.0.0/"))
+                (delete-file-recursively "foo-1.0.0")
+                (set! test-source-hash
+                  (call-with-input-file file-name port-sha256))))
              ("https://example.com/foo-1.0.0-py2.py3-none-any.whl"
-               (begin
-                 (mkdir "foo-1.0.0.dist-info")
-                 (with-output-to-file "foo-1.0.0.dist-info/metadata.json"
-                   (lambda ()
-                     (display test-metadata)))
-                 (let ((zip-file (string-append file-name ".zip")))
-                   ;; zip always adds a "zip" extension to the file it creates,
-                   ;; so we need to rename it.
-                   (system* "zip" zip-file "foo-1.0.0.dist-info/metadata.json")
-                   (rename-file zip-file file-name))
-                 (delete-file-recursively "foo-1.0.0.dist-info")))
+              (begin
+                (mkdir "foo-1.0.0.dist-info")
+                (with-output-to-file "foo-1.0.0.dist-info/METADATA"
+                  (lambda ()
+                    (display test-metadata)))
+                (let ((zip-file (string-append file-name ".zip")))
+                  ;; zip always adds a "zip" extension to the file it creates,
+                  ;; so we need to rename it.
+                  (system* "zip" "-q" zip-file "foo-1.0.0.dist-info/METADATA")
+                  (rename-file zip-file file-name))
+                (delete-file-recursively "foo-1.0.0.dist-info")))
              (_ (error "Unexpected URL: " url)))))
         (mock ((guix http-client) http-fetch
                (lambda (url . rest)
@@ -187,6 +265,9 @@ baz > 13.37")
                             (string-length test-json)))
                    ("https://example.com/foo-1.0.0-py2.py3-none-any.whl" #f)
                    (_ (error "Unexpected URL: " url)))))
+              ;; Not clearing the memoization cache here would mean returning the value
+              ;; computed in the previous test.
+              (invalidate-memoization! pypi->guix-package)
               (match (pypi->guix-package "foo")
                 (('package
                    ('name "python-foo")
@@ -202,6 +283,55 @@ baz > 13.37")
                     ('quasiquote
                      (("python-bar" ('unquote 'python-bar))
                       ("python-baz" ('unquote 'python-baz)))))
+                   ('native-inputs
+                    ('quasiquote
+                     (("python-pytest" ('unquote 'python-pytest)))))
+                   ('home-page "http://example.com")
+                   ('synopsis "summary")
+                   ('description "summary")
+                   ('license 'license:lgpl2.0))
+                 (string=? (bytevector->nix-base32-string
+                            test-source-hash)
+                           hash))
+                (x
+                 (pk 'fail x #f))))))
+
+(test-assert "pypi->guix-package, no usable requirement file."
+  ;; Replace network resources with sample data.
+  (mock ((guix import utils) url-fetch
+         (lambda (url file-name)
+           (match url
+             ("https://example.com/foo-1.0.0.tar.gz"
+              (mkdir-p "foo-1.0.0/foo.egg-info/")
+              (parameterize ((current-output-port (%make-void-port "rw+")))
+                (system* "tar" "czvf" file-name "foo-1.0.0/"))
+              (delete-file-recursively "foo-1.0.0")
+              (set! test-source-hash
+                (call-with-input-file file-name port-sha256)))
+             ("https://example.com/foo-1.0.0-py2.py3-none-any.whl" #f)
+             (_ (error "Unexpected URL: " url)))))
+        (mock ((guix http-client) http-fetch
+               (lambda (url . rest)
+                 (match url
+                   ("https://pypi.org/pypi/foo/json"
+                    (values (open-input-string test-json)
+                            (string-length test-json)))
+                   ("https://example.com/foo-1.0.0-py2.py3-none-any.whl" #f)
+                   (_ (error "Unexpected URL: " url)))))
+              ;; Not clearing the memoization cache here would mean returning the value
+              ;; computed in the previous test.
+              (invalidate-memoization! pypi->guix-package)
+              (match (pypi->guix-package "foo")
+                (('package
+                   ('name "python-foo")
+                   ('version "1.0.0")
+                   ('source ('origin
+                              ('method 'url-fetch)
+                              ('uri ('pypi-uri "foo" 'version))
+                              ('sha256
+                               ('base32
+                                (? string? hash)))))
+                   ('build-system 'python-build-system)
                    ('home-page "http://example.com")
                    ('synopsis "summary")
                    ('description "summary")