There is some trouble with rpm-py-installer while making distribution of rpkg in Fedora, that causes maintainer has to hack the source code or files installed in the buildroot to remove rpm-py-installer from Python requires.txt.

Some background of the consideration to remove rpm-py-installer

• rpkg runs tests by tox against various Python 2 and 3 interpreters.
• rpkg could be installed from PyPI, which could be used in downstream tools like fedpkg.
• fedpkg had been changed to install binary as a setuptools entry point.
• When making RPM, there is no Requires of rpm-py-installer, just requires python[23]-rpm.