The package lists docutils, packaging and setuptools as runtime dependencies (install_requires). However, these packages are not used by the installed Python packages and therefore are not runtime dependencies. Listing them is causing them to be incorrectly installed when python-daemon is installed from a binary package. Furthermore, this requires patching distribution packages to be able to list build and runtime dependencies correctly, as otherwise not installing these packages (as they are unnecessary) will trigger integrity check (pip check) failures.

I see there's a reference to a setuptools bug report that was rejected as making incorrect assumptions about what setup.py ought to do.