Fixes <https://bugs.gnu.org/33882>.
* gnu/packages/graphics.scm (blender-2.79): New variable.
(blender)[description]: Remove obsolete claim that the stable
release no longer works in Guix.
* gnu/packages/patches/blender-2.79-newer-ffmpeg.patch,
gnu/packages/patches/blender-2.79-python-3.7-fix.patch: New files.
* gnu/local.mk (dist_patch_DATA): Add them.
Mark H Weaver