I was trying to install Sverchok plugin for Blender. It enables Blender to change parameters in order to modify a wide range of values without redrawing everything in case of a global change in something repetitive.
I checked the license. It is GPLv3. What else should i do to verify freedom? When i tryed to install the Sverchok addon https://wiki.blender.org/index.php/Extensions:2.6/Py/Scripts/Nodes/Sverchok http://nikitron.cc.ua/sverch/html/main.html I got the message: ImportError: No module named ‘numpy’ so i installed python-numpy. And then i got error: ImportError: No module named ‘requests’ I then instaled python-requests. Both these dependencies are mentioned in Sverchok's documentation. The Blender binary ships with: idna, chardet, urllib3, certifi, requests and numpy https://git.blender.org/gitweb/gitweb.cgi/blender.git/blob/HEAD:/build_files/build_environment/cmake/versions.cmake It reports versions of numpy, requests and others set(REQUESTS_VERSION 2.18.4) set(NUMPY_VERSION v1.13.1) set(NUMPY_SHORT_VERSION 1.13) set(NUMPY_URI https://pypi.python.org/packages/c0/3a/40967d9f5675fbb097ffec170f59c2ba19fc96373e73ad47c2cae9a30aed/numpy-1.13.1.zip) set(NUMPY_HASH 2c3c0f4edf720c3a7b525dacc825b9ae) propagated-inputs The NixOS package explicitly disables numpy at build time. Those dependencies are not required for building the Guix package: https://git.savannah.gnu.org/cgit/guix.git/tree/gnu/packages/graphics.scm?id=v0.14.0-1266-gd2a7170de#n79 It's better to just package these plugins separately rather than propagating these (large) packages for every Blender user. They are not necessary to run blender https://wiki.blender.org/index.php/Dev:Doc/Building_Blender/Linux/dependencies It is just that Blender's oficial binary ships with those plugins and their dependencies by default. We need not do the same. If the user needs those addons, she may install them with Guix solving the dependencies. I was helped by: <bzztploink> <Yaniel> from #blender and: <mbakke> from the Guix. Thank you very much!
