gnu: Add blender@2.79b.

Restore blender@2.79b, the last version that does not require OpenGL 3,
and therefore the last version to work on many older computers.  Note
that this commit relies on blender-2.79-newer-ffmpeg.patch and
blender-2.79-python-3.7-fix.patch, which were left in the tree when
blender@2.79b was previously removed in commit
1f14453eedfede4626a78321c66a009c9997bee4.

* gnu/packages/patches/blender-2.79-gcc8.patch,
gnu/packages/patches/blender-2.79-gcc9.patch,
gnu/packages/patches/blender-2.79-oiio2.patch,
gnu/packages/patches/blender-2.79-python-3.8-fix.patch: New files.
* gnu/local.mk (dist_patch_DATA): Add them.
* gnu/packages/graphics.scm (blender-2.79): New variable.

1 files changed, 96 insertions, 0 deletions

diff --git a/gnu/packages/graphics.scm b/gnu/packages/graphics.scm
index cc7e761955..cdb13c2619 100644
--- a/gnu/packages/graphics.scm
+++ b/gnu/packages/graphics.scm
@@ -295,6 +295,102 @@ compositing and motion tracking, even video editing and game creation.  The
 application can be customized via its API for Python scripting.")
     (license license:gpl2+)))
 
+(define-public blender-2.79
+  (package
+    (name "blender")
+    (version "2.79b")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://download.blender.org/source/"
+                                  "blender-" version ".tar.gz"))
+              (sha256
+               (base32
+                "1g4kcdqmf67srzhi3hkdnr4z1ph4h9sza1pahz38mrj998q4r52c"))
+              (patches (search-patches "blender-2.79-newer-ffmpeg.patch"
+                                       "blender-2.79-oiio2.patch"
+                                       ;; The following patches may be
+                                       ;; needed when the default GCC is
+                                       ;; updated:
+                                       ;;   "blender-2.79-gcc8.patch"
+                                       ;;   "blender-2.79-gcc9.patch"
+                                       "blender-2.79-python-3.7-fix.patch"
+                                       "blender-2.79-python-3.8-fix.patch"))))
+    (build-system cmake-build-system)
+    (arguments
+      (let ((python-version (version-major+minor (package-version python))))
+       `(;; Test files are very large and not included in the release tarball.
+         #:tests? #f
+         #:configure-flags
+         (list "-DWITH_CODEC_FFMPEG=ON"
+               "-DWITH_CODEC_SNDFILE=ON"
+               "-DWITH_CYCLES=ON"
+               "-DWITH_DOC_MANPAGE=ON"
+               "-DWITH_FFTW3=ON"
+               "-DWITH_GAMEENGINE=ON"
+               "-DWITH_IMAGE_OPENJPEG=ON"
+               "-DWITH_INPUT_NDOF=ON"
+               "-DWITH_INSTALL_PORTABLE=OFF"
+               "-DWITH_JACK=ON"
+               "-DWITH_MOD_OCEANSIM=ON"
+               "-DWITH_PLAYER=ON"
+               "-DWITH_PYTHON_INSTALL=OFF"
+               "-DWITH_PYTHON_INSTALL=OFF"
+               "-DWITH_SYSTEM_OPENJPEG=ON"
+               (string-append "-DPYTHON_LIBRARY=python" ,python-version)
+               (string-append "-DPYTHON_LIBPATH=" (assoc-ref %build-inputs "python")
+                              "/lib")
+               (string-append "-DPYTHON_INCLUDE_DIR=" (assoc-ref %build-inputs "python")
+                              "/include/python" ,python-version)
+               (string-append "-DPYTHON_VERSION=" ,python-version))
+         #:phases
+         (modify-phases %standard-phases
+           (add-after 'unpack 'fix-broken-import
+             (lambda _
+               (substitute* "release/scripts/addons/io_scene_fbx/json2fbx.py"
+                 (("import encode_bin") "from . import encode_bin"))
+               #t))
+           (add-after 'set-paths 'add-ilmbase-include-path
+             (lambda* (#:key inputs #:allow-other-keys)
+               ;; OpenEXR propagates ilmbase, but its include files do not appear
+               ;; in the CPATH, so we need to add "$ilmbase/include/OpenEXR/" to
+               ;; the CPATH to satisfy the dependency on "half.h".
+               (setenv "CPATH"
+                       (string-append (assoc-ref inputs "ilmbase")
+                                      "/include/OpenEXR"
+                                      ":" (or (getenv "CPATH") "")))
+               #t))))))
+    (inputs
+     `(("boost" ,boost)
+       ("jemalloc" ,jemalloc)
+       ("libx11" ,libx11)
+       ("openimageio" ,openimageio)
+       ("openexr" ,openexr)
+       ("ilmbase" ,ilmbase)
+       ("openjpeg" ,openjpeg)
+       ("libjpeg" ,libjpeg-turbo)
+       ("libpng" ,libpng)
+       ("libtiff" ,libtiff)
+       ("ffmpeg" ,ffmpeg)
+       ("fftw" ,fftw)
+       ("jack" ,jack-1)
+       ("libsndfile" ,libsndfile)
+       ("freetype" ,freetype)
+       ("glew" ,glew)
+       ("openal" ,openal)
+       ("python" ,python)
+       ("zlib" ,zlib)))
+    (home-page "https://blender.org/")
+    (synopsis "3D graphics creation suite")
+    (description
+     "Blender is a 3D graphics creation suite.  It supports the entirety of
+the 3D pipeline—modeling, rigging, animation, simulation, rendering,
+compositing and motion tracking, even video editing and game creation.  The
+application can be customized via its API for Python scripting.
+
+NOTE: This older version of Blender is the last release that does not require
+OpenGL 3.  It is retained for use with older computers.")
+    (license license:gpl2+)))
+
 (define-public assimp
   (package
     (name "assimp")