Evgeny Pisemsky wrote on 11 Feb 20:12 +0100
(address . bug-guix@gnu.org)
For some reason installed package lacks templates and other media
files listed in the source's MANIFEST.in, which makes it unusable.
Tests can't prove it because they are run in the source directory.
Manual install from source into venv with =pip install .= works as
expected, so this could be a bug in python/pyproject build system.