Age | Commit message (Expand) | Author |
2023-02-19 | gexp: computed-file: Honor %guile-for-build....* guix/gexp.scm (computed-file-compiler): Honor %guile-for-build.
| Maxim Cournoyer |
2022-10-22 | Remove now unnecessary uses of (guix grafts)....These modules would use (guix grafts) just to access '%graft?' and
related bindings, which are now in (guix store).
* gnu/ci.scm,
guix/gexp.scm,
guix/lint.scm,
guix/scripts.scm,
guix/scripts/archive.scm,
guix/scripts/build.scm,
guix/scripts/challenge.scm,
guix/scripts/deploy.scm,
guix/scripts/environment.scm,
guix/scripts/home.scm,
guix/scripts/pack.scm,
guix/scripts/package.scm,
guix/scripts/pull.scm,
guix/scripts/size.scm,
guix/scripts/system.scm,
guix/scripts/weather.scm,
tests/builders.scm,
tests/channels.scm,
tests/cpan.scm,
tests/derivations.scm,
tests/gexp.scm,
tests/graph.scm,
tests/guix-daemon.sh,
tests/monads.scm,
tests/pack.scm,
tests/packages.scm,
tests/profiles.scm,
tests/system.scm: Remove #:use-module (guix grafts).
| Ludovic Courtès |
2022-08-28 | gexp: directory-union: Fix documentation....* guix/gexp.scm (directory-union): Fix documentation.
| Maxim Cournoyer |
2022-05-01 | gexp: Add 'references-file'....* gnu/services/base.scm (references-file): Remove.
* guix/gexp.scm (references-file): New procedure.
* tests/gexp.scm ("references-file"): New test.
| Ludovic Courtès |
2022-03-13 | gexp: Correctly handle #$output in 'gexp->approximate-sexp'....This addresses the following backtrace from
"guix lint -c wrapper-inputs hostapd":
Backtrace:ostapd@2.10 [wrapper-inputs]...
[...]
174:9 3 (gexp->approximate-sexp #<gexp (modify-phases %standard?>)
In srfi/srfi-1.scm:
586:17 2 (map1 (#<gexp-output out> #<gexp-input "pkg-config":o?>))
In guix/gexp.scm:
175:16 1 (_ _)
In ice-9/boot-9.scm:
1685:16 0 (raise-exception _ #:continuable? _)
ice-9/boot-9.scm:1685:16: In procedure raise-exception:
Throw to key `match-error' with args `("match" "no matching pattern" #<gexp-output out>)'.
* guix/gexp.scm (gexp->approximate-sexp): Handle the case where 'reference' is
a <gexp-output>,, by returning (*approximate*).
* tests/gexp.scm ("gexp->approximate-sexp, outputs"): Test it.
Signed-off-by: Ludovic Courtès <ludo@gnu.org>
| Maxime Devos |
2022-03-13 | gexp: Correctly handle unquoting S-exp objects....This fixes a false-positive in the linter:
guix lint -c 'wrapper-inputs' libaio
* guix/gexp.scm (gexp->approximate-sexp): Allow the 'thing' in <gexp-input> to
be a sexp, without approximation, by testing if it is a record.
* tests/gexp.scm ("unquoted sexp (not a gexp!)"): Test it.
Signed-off-by: Ludovic Courtès <ludo@gnu.org>
| Maxime Devos |
2022-02-16 | gexp: Preserve source location for #~ and #$ read extensions....Read hash extensions preserve source location info as source properties
on their result. However, in Guile 3.0.8, that location would be
dismissed, leading 'local-file' to fail to resolve file names relative
to the source directory.
Fixes <https://issues.guix.gnu.org/54003>.
Reported by Aleksandr Vityazev <avityazev@posteo.org>.
* guix/gexp.scm <eval-when> [read-syntax-redefined?, read-procedure]
[read-syntax*]: New variables.
[read-ungexp]: Adjust to expect either sexps or syntax objects.
[read-gexp]: Call 'read-procedure'.
* tests/gexp.scm ("local-file, relative file name, within gexp")
("local-file, relative file name, within gexp, compiled"): New tests.
| Ludovic Courtès |
2022-02-15 | gexp: 'computed-file' always uses a native Guile....Fixes a regression whereby, when cross-compiling, 'computed-file' would
use a cross-compiled Guile as its builder, which would fail to run.
Regression introduced in af57d1bf6c46f47d82dbc234dde1e16fa8634e9d (the
problem had always been there but was hidden before behind the (not guile)
condition.)
* guix/gexp.scm (computed-file-compiler): For 'guile', pass #:target #f.
* tests/gexp.scm ("lower-object, computed-file, #:target"): New test.
| Ludovic Courtès |
2022-02-11 | tests: Pass #:guile to 'computed-file' & co....Fixes a regression introduced in
af57d1bf6c46f47d82dbc234dde1e16fa8634e9d whereby tests would end up
building the world.
* guix/gexp.scm (mixed-text-file): Add #:guile parameter and honor it.
* tests/gexp.scm ("mixed-text-file"): Pass #:guile to 'mixed-text-file'.
("file-union"): Pass #:guile to 'file-union'.
("lower-object, computed-file"): Pass #:guile to 'computed-file'.
("lower-object, computed-file + grafts"): Likewise.
* tests/packages.scm ("origin->derivation, single file with snippet"):
Likewise.
* tests/profiles.scm ("profile-derivation, ordering & collisions"):
Likewise.
* guix/tests.scm (test-file): Likewise.
| Ludovic Courtès |
2022-02-11 | gexp: <computed-file> does not honor (%guile-for-build)....* guix/gexp.scm (computed-file-compiler): Default to (default-guile).
That way, lowering of <computed-file> is not affected by the
'%guile-for-build' parameter.
(file-union): Add #:guile parameter and honor it.
* gnu/packages/ruby.scm (ruby-tzinfo-data): Pass #:guile to 'file-union'.
| Ludovic Courtès |
2021-11-27 | gexp: 'file-append' correctly handles bases without an expander....This fixes this use case:
(file-append (let-system ...) ...)
* guix/gexp.scm (file-append-compiler): When BASE lacks an expander,
delegate to LOWERED.
* tests/gexp.scm ("let-system in file-append"): New test.
| Ludovic Courtès |
2021-09-25 | gexp: Leave grafting as is when lowering allowed/disallowed references....Fixes <https://issues.guix.gnu.org/50676>.
Reported by Mathieu Othacehe <othacehe@gnu.org>.
Commit a779363b6aa581e88eda21f9f35530962d54ac25 was partially incorrect:
references passed to #:allowed-references or #:references-graphs *can*
be lowered as references to grafted elements. This is for example the
case when doing:
(computed-file "partition.img" exp
#:options `(#:references-graphs ,inputs))
Here INPUTS must be lowered as a reference to suitably grafted elements.
Failing to do that, the reference graph will not match the actual
INPUTS.
However, when building a package, those references must indeed refer
only to ungrafted packages. This commit preserves that by having build
systems pass #:graft? #f.
* guix/gexp.scm (lower-reference-graphs, lower-references): Remove uses
of 'without-grafting'. This reverts
a779363b6aa581e88eda21f9f35530962d54ac25.
* guix/build-system/cmake.scm (cmake-build, cmake-cross-build):
Pass #:graft? #f.
* guix/build-system/glib-or-gtk.scm (glib-or-gtk-build)
(glib-or-gtk-cross-build): Likewise.
* guix/build-system/gnu.scm (gnu-build, gnu-cross-build): Likewise.
* guix/build-system/meson.scm (meson-build, meson-cross-build): Likewise.
* guix/build-system/trivial.scm (trivial-build, trivial-cross-build):
Likewise.
* tests/gexp.scm ("lower-object, computed-file + grafts"): New test.
* tests/packages.scm ("trivial with #:allowed-references + grafts"): New
test.
| Ludovic Courtès |
2021-07-18 | Merge branch 'master' into core-updates | Ludovic Courtès |
2021-06-30 | guix: gexp: Define gexp->approximate-sexp....It will be used in the 'optional-tests' linter.
* guix/gexp.scm (gexp->approximate-sexp): New procedure.
* tests/gexp.scm
("no references", "unquoted gexp", "unquoted gexp (native)")
("spliced gexp", "unspliced gexp, approximated")
("unquoted gexp, approximated"): Test it.
* doc/gexp.scm ("G-Expressions"): Document it.
Signed-off-by: Mathieu Othacehe <othacehe@gnu.org>
| Maxime Devos |
2021-06-23 | gexp: 'mixed-text-file' UTF-8-encodes its output....* guix/gexp.scm (mixed-text-file)[build]: Call 'set-port-encoding!'.
Signed-off-by: Ludovic Courtès <ludo@gnu.org>
| Andrew Tropin |
2021-03-31 | gexp: 'compiled-modules' honors extensions....Fixes a regression introduced in
2eafeb2f3d661061bc412c3f27c90202e4532532 whereby extensions would not be
added as inputs of the resulting derivation.
* guix/gexp.scm (compiled-modules): Append EXTENSIONS to the second
argument of 'gexp-with-hidden-inputs'.
| Ludovic Courtès |
2021-03-30 | gexp: 'compiled-modules' gets source and parameters an environment variables....This reduces the number of 'add-text-to-store' RPCs by 15 (out of 3336)
oin "guix build -d --no-grafts libreoffice".
* guix/gexp.scm (gexp-with-hidden-inputs): New procedure.
(compiled-modules): Use it. Pass #:script-name. Augment #:env-vars.
| Ludovic Courtès |
2021-03-30 | gexp: 'gexp->script' uses #:guile also as the guile-for-build....Previously 'gexp->script' would unconditionally use the
default #:guile-for-build value of 'gexp->derivation'.
* guix/gexp.scm (gexp->script): Pass #:guile to 'load-path-expression'.
Pass #:guile-for-build to 'gexp->derivation'.
| Ludovic Courtès |
2021-03-30 | gexp: Add #:guile parameter to 'load-path-expression'....* guix/gexp.scm (load-path-expression): Add #:guile parameter and honor it.
| Ludovic Courtès |
2021-03-30 | gexp: 'imported+compiled-modules' fully honors #:guile....* guix/gexp.scm (imported+compiled-modules): Pass #:guile to
'imported-modules'.
| Ludovic Courtès |
2021-03-30 | gexp: Do not add derivations to the object cache....That was needlessly making the object cache grow.
* guix/gexp.scm (lower-object, lower+expand-object): Bypass the object
cache when OBJ is a derivation. This almost halves the number of
cache lookups and reduces the number of entries from 3.4K to 2.6K when
doing "guix build libreoffice -d --no-grafts".
| Ludovic Courtès |
2021-03-30 | gexp: Allowed/disallowed references and graphs never refer to grafted inputs....* guix/gexp.scm (lower-reference-graphs, lower-references): Wrap
'lower-object' call in 'without-grafting' since these things never refer
to grafted inputs.
| Ludovic Courtès |
2021-03-30 | build-system: Use 'input-tuples->gexp' and 'outputs->gexp'....* guix/gexp.scm (input-tuples->gexp, outputs->gexp): Make public.
* guix/build-system/cargo.scm (cargo-build): Use them.
* guix/build-system/gnu.scm (gnu-cross-build): Likewise.
* guix/build-system/ocaml.scm (ocaml-build): Likewise.
* guix/build-system/cmake.scm (cmake-cross-build): Likewise.
| Ludovic Courtès |
2021-03-30 | gexp: Add 'sexp->gexp'....* guix/gexp.scm (sexp->gexp): New procedure.
* tests/gexp.scm ("sexp->gexp"): New test.
| Ludovic Courtès |
2021-03-30 | build-system: Rewrite using gexps....* guix/packages.scm (expand-input): Remove 'store', 'system', and
'cross-system' parameters; add #:native?. Rewrite to return
name/gexp-input tuples.
(bag->derivation): Adjust accordingly. Lower (bag-build bag).
(bag->cross-derivation): Ditto. Instead of #:native-drvs and
#:target-drvs, pass #:build-inputs, #:host-inputs, and #:target-inputs.
(%derivation-cache): Remove.
* gnu/packages/bootstrap.scm (raw-build): Turn into a monadic procedure.
* gnu/packages/commencement.scm (glibc-final)[arguments]: Use
'gexp-input' for the #:allowed-references argument.
* guix/build-system/cmake.scm (cmake-build): Remove 'store' parameter.
Switch to the use of gexps and 'gexp->derivation'.
(lower): Remove #:source from 'private-keywords'.
* guix/build-system/glib-or-gtk.scm (glib-or-gtk-build, lower):
Likewise.
* guix/build-system/font.scm (font-build): Likewise.
* guix/build-system/gnu.scm (gnu-build): Likewise, and remove
'canonicalize-reference'.
(gnu-cross-build): Likewise, and expect #:build-inputs, #:host-inputs,
and #:target-inputs instead of #:native-drvs and #:target-drvs.
(lower): Likewise.
* guix/build-system/perl.scm (perl-build, lower): Likewise.
* guix/build-system/python.scm (python-build, lower): Likewise.
* guix/build-system/ruby.scm (ruby-build, lower): Likewise.
* guix/build-system/waf.scm (waf-build, lower): Likewise.
* guix/build-system/trivial.scm (guile-for-build): Remove.
(trivial-build): Remove 'store' parameter, change to gexps.
(trivial-cross-build): Ditto, and change to #:build-inputs & co.
* guix/build-system/cargo.scm (cargo-build): Change to 'gexp->derivation'.
* guix/build-system/copy.scm (copy-build): Likewise.
* guix/build-system/dune.scm (dune-build): Likewise.
* guix/build-system/guile.scm (guile-build, guile-cross-build):
Likewise.
* guix/build-system/meson.scm (meson-build): Likewise.
* guix/build-system/ocaml.scm (ocaml-build): Likewise.
* guix/build-system/scons.scm (scons-build): Likewise.
* guix/build-system/texlive.scm (texlive-build): Likewise.
* guix/build-system/android-ndk.scm (android-ndk-build): Likewise.
* guix/build-system/ant.scm (ant-build): Likewise.
* guix/build-system/asdf.scm (asdf-build/source, asdf-build): Likewise.
* guix/build-system/chicken.scm (chicken-build): Likewise.
* guix/build-system/clojure.scm (clojure-build): Likewise.
(source->output-path, maybe-guile->guile): Remove.
* guix/build-system/dub.scm (dub-build): Likewise.
* guix/build-system/emacs.scm (emacs-build): Likewise.
* guix/build-system/go.scm (go-build): Likewise.
* guix/build-system/haskell.scm (haskell-build): Likewise.
* guix/build-system/julia.scm (julia-build): Likewise.
* guix/build-system/linux-module.scm (linux-module-build)
(linux-module-build-cross): Likewise.
* guix/build-system/maven.scm (maven-build): Likewise.
* guix/build-system/minify.scm (minify-build): Likewise.
* guix/build-system/node.scm (node-build): Likewise.
* guix/build-system/qt.scm (qt-build, qt-cross-build): Likewise.
* guix/build-system/r.scm (r-build): Likewise.
* guix/build-system/rakudo.scm (rakudo-build): Likewise.
* guix/build-system/renpy.scm (renpy-build): Likewise.
* tests/builders.scm ("gnu-build"): Call 'store-lower' on 'gnu-build'.
Pass #:source parameter.
* tests/packages.scm ("search paths"): Use 'abort-to-prompt' instead of
a normal return from the 'build' method.
("package->bag, sensitivity to %current-target-system"): Change 'build'
to match the new build system signature.
squash! build-system: Rewrite using gexps.
squash! build-system: Rewrite using gexps.
| Ludovic Courtès |
2021-03-30 | gexp: Optimize 'with-build-variables'....* guix/gexp.scm (input-tuples->gexp, outputs->gexp): New procedures.
(with-build-variables): Use it.
| Ludovic Courtès |
2021-03-30 | gexp: Add 'with-build-variables'....* guix/gexp.scm (with-build-variables): New procedure.
| Ludovic Courtès |
2021-03-29 | gexp: 'gexp->script' uses #:guile also as the guile-for-build....Previously 'gexp->script' would unconditionally use the
default #:guile-for-build value of 'gexp->derivation'.
* guix/gexp.scm (gexp->script): Pass #:guile to 'load-path-expression'.
Pass #:guile-for-build to 'gexp->derivation'.
| Ludovic Courtès |
2021-03-29 | gexp: Add #:guile parameter to 'load-path-expression'....* guix/gexp.scm (load-path-expression): Add #:guile parameter and honor it.
| Ludovic Courtès |
2021-03-29 | gexp: 'imported+compiled-modules' fully honors #:guile....* guix/gexp.scm (imported+compiled-modules): Pass #:guile to
'imported-modules'.
| Ludovic Courtès |
2021-03-06 | Merge branch 'master' into core-updates | Christopher Baines |
2021-03-05 | gexp: Honor #:target in 'compiled-modules'....* guix/gexp.scm (compiled-modules): Pass #:target to 'gexp->derivation'.
| Ludovic Courtès |
2021-03-03 | gexp: #:references-graphs refers to non-native derivations....Fixes a regression introduced in
c6d6aee6659acb293eb33f498fdac3b47a19a48, where #:reference-graphs would
end up referring to native inputs.
This would notably break the compilation of systems using a childhurd,
because they would attempt to build the 'hurd' package natively.
* guix/gexp.scm (lower-reference-graphs)[tuple->gexp-input]: Honor TARGET.
* tests/gexp.scm ("gexp->derivation #:references-graphs cross-compilation"):
New test.
| Ludovic Courtès |
2021-02-23 | gexp: Reduce allocations in 'gexp-attribute'....* guix/gexp.scm (gexp-attribute): Use 'fold' and 'fold/tree' instead of
'append-map'.
| Ludovic Courtès |
2021-02-23 | gexp: Reduce allocations while traversing lists....This reduces the total amount of memory allocated by 8% when running
"guix build qemu -d --no-grafts".
* guix/gexp.scm (fold/tree): New procedure.
(gexp-inputs)[interesting?]: New procedure.
[add-reference-inputs]: Change (lst ...) clause to (? pair? lst), and
use 'fold/tree' to recurse into it.
(gexp-inputs)[add-reference-output]: Likewise, and remove
plain (lst ...) clause.
Call 'fold'.
(gexp->sexp)[reference->sexp]: In the list case, avoid boxing and
recursive call when the object has a plain non-aggregate type.
| Ludovic Courtès |
2021-02-23 | gexp: Micro-optimize 'gexp->sexp' and 'lower-inputs'....* guix/gexp.scm (lower-inputs, gexp->sexp): Change keyword parameters to
positional parameters. Adjust callers accordingly.
* tests/gexp.scm (gexp->sexp*, "gexp->file"): Adjust accordingly.
| Ludovic Courtès |
2021-02-23 | gexp: Keep 'lower-inputs' private....It had been made public in 6b6298ae39bfe185ce1ab18bb3d641ddfad17c8f but
it's no longer needed since 779aa003fbacbbcb6973f289b607d1d285009cec.
* guix/gexp.scm (lower-inputs): Do not export.
| Ludovic Courtès |
2021-02-23 | gexp: 'gexp-inputs' returns both native and non-native inputs....This avoids double traversal of references and extra bookkeeping,
thereby further reducing memory allocations.
* guix/gexp.scm (lower-gexp): Include only one call to 'lower-inputs'.
(gexp-inputs): Remove #:native? parameter.
[set-gexp-input-native?]: New procedure.
[add-reference-inputs]: Use it.
(gexp-native-inputs): Remove.
* tests/gexp.scm (gexp-native-inputs): Remove.
(gexp-input->tuple): Include 'gexp-input-native?'.
("let-system")
("let-system, nested")
("ungexp + ungexp-native")
("ungexp + ungexp-native, nested")
("ungexp + ungexp-native, nested, special mixture")
("input list")
("input list + ungexp-native")
("input list splicing")
("input list splicing + ungexp-native-splicing")
("gexp list splicing + ungexp-splicing"): Adjust accordingly.
| Ludovic Courtès |
2021-02-23 | gexp: 'gexp-inputs' returns a list of <gexp-input> records....This slightly reduces memory allocation.
* guix/gexp.scm (lower-inputs): Expect a list of <gexp-input> rather
than a list of tuples.
(lower-reference-graphs)[tuple->gexp-input]: New procedure.
Use it.
(gexp-inputs): Return a list of <gexp-input> rather than a list of
tuples.
* tests/gexp.scm (gexp-input->tuple): New procedure.
("one input package")
("one input package, dotted list")
("one input origin")
("one local file")
("one local file, symlink")
("one plain file")
("two input packages, one derivation, one file")
("file-append")
("file-append, output")
("file-append, nested")
("let-system")
("let-system, nested")
("ungexp + ungexp-native")
("ungexp + ungexp-native, nested")
("ungexp + ungexp-native, nested, special mixture")
("input list")
("input list + ungexp-native")
("input list splicing")
("input list splicing + ungexp-native-splicing")
("gexp list splicing + ungexp-splicing"): Adjust accordingly.
| Ludovic Courtès |
2021-02-23 | gexp: Micro-optimize sexp serialization....* guix/gexp.scm (sexp->string): New procedure.
(gexp->derivation): Use it instead of 'object->string'.
| Ludovic Courtès |
2021-01-13 | Merge branch 'staging' into 'core-updates'....Conflicts:
gnu/local.mk
gnu/packages/cmake.scm
gnu/packages/curl.scm
gnu/packages/gl.scm
gnu/packages/glib.scm
gnu/packages/guile.scm
gnu/packages/node.scm
gnu/packages/openldap.scm
gnu/packages/package-management.scm
gnu/packages/python-xyz.scm
gnu/packages/python.scm
gnu/packages/tls.scm
gnu/packages/vpn.scm
gnu/packages/xorg.scm
| Maxim Cournoyer |
2020-12-19 | maint: Require Guile >= 2.2.6....* configure.ac: For Guile 2.2, require 2.2.6 or later.
* guix/gexp.scm (define-syntax-parameter-once): Remove.
Use 'define-syntax-parameter' instead.
* guix/mnoads.scm: Likewise.
* guix/inferior.scm (proxy)[select*]: Remove.
* guix/scripts/publish.scm <top level>: Remove replacement for (@@ (web
http) read-header-line).
* guix/store/deduplication.scm (counting-wrapper-port): Remove.
(nar-sha256): Call 'port-position' on PORT to compute SIZE.
| Ludovic Courtès |
2020-11-29 | Merge remote-tracking branch 'origin/master' into core-updates | Christopher Baines |
2020-11-05 | gexp: Warn when importing (guix config) or (ice-9 …)....While importing those modules from the host system is valid, it is often
a mistake that introduces non-reproducibility. This patch prints a
warning when that happens.
* guix/gexp.scm (gexp-attribute): Add #:validate parameter and honor it.
(gexp-modules)[validate-modules]: New procedure.
Pass it to 'gexp-attribute'.
* tests/gexp.scm ("gexp-modules, warning"): New test.
| Ludovic Courtès |
2020-11-05 | gexp: Store the source code location in <gexp>....* guix/gexp.scm (<gexp>)[location]: New field.
(gexp-location): New procedure.
(write-gexp): Print the location of GEXP.
(gexp->derivation): Adjust call to 'make-gexp'.
(gexp): Likewise.
| Ludovic Courtès |
2020-10-19 | Merge branch 'staging'...Conflicts:
gnu/packages/admin.scm
gnu/packages/commencement.scm
gnu/packages/gdb.scm
gnu/packages/llvm.scm
gnu/packages/package-management.scm
gnu/packages/tls.scm
| Maxim Cournoyer |
2020-10-18 | gexp: 'assume-valid-file-name' has files looked up under the CWD....Fixes a bug introduced in 5d4ad8e1be6d60c38577e2f3d92cc5642b12eff0,
whereby files enclosed in 'assume-valid-file-name' would be looked up
relative to the source directory instead of relative to the current
directory.
* guix/gexp.scm (local-file): In the 'assume-valid-file-name' case, look
up FILE relative to the current working directory.
| Ludovic Courtès |
2020-10-16 | gexp: Add 'assume-valid-file-name' syntax for use with 'local-file'....* guix/gexp.scm (assume-valid-file-name): New variable.
(local-file): Add clause with (assume-valid-file-name file).
| Ludovic Courtès |
2020-10-02 | gexp: Fix argument ordering in 'local-file' macro....Fixes a regression introduced in
f43ffee90882c2d61b46d69728daa7432be297e4.
Reported by jonsger on #guix.
* guix/gexp.scm (local-file): In the non-literal case, add #:literal?
and #:location after REST.
| Ludovic Courtès |
2020-10-02 | gexp: 'local-file' warns when passed a non-literal relative file name....Fixes <https://bugs.gnu.org/43736>.
Reported by Vitaliy Shatrov <guix.vits@disroot.org>.
* guix/gexp.scm (%local-file): Add #:literal? and #:location.
Emit a warning when LITERAL? is false and FILE is not absolute.
(local-file): In the non-literal case, pass #:location and #:literal?.
* po/guix/POTFILES.in: Add guix/gexp.scm.
* tests/guix-system.sh: Add test for the warning.
| Ludovic Courtès |