Add a MANIFEST.in file This is solely to workaround setuptool's weird behaviour of not exercising its default package discovery logic when the setuptools-scm plugin had to fall back to a static version string during its version inference. Due to setuptools-scm order of precedence for git metadata discovery, this file should only ever be used on a rare occasion, e.g. doing development builds from a git worktree. [1] https://setuptools-scm.readthedocs.io/en/latest/usage/#file-finders-hook-makes-most-of-manifestin-unnecessary Signed-off-by: Erik Skultety <eskultet@redhat.com>