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When invoking setup.py directly, the default behavior for 'install' is to run the bdist_egg installation hook, which is ... actually deprecated by setuptools. It doesn't seem to work quite right anymore. By contrast, 'pip install' will invoke the bdist_wheel hook instead. This leads to differences in behavior for the two approaches. I advocate using pip in the documentation in this directory, but the 'setup.py' which has been used for quite a long time in the Python world may deceptively appear to work at first glance. Add an error message that will save a bit of time and frustration that points the user towards using the supported installation invocation. Reported-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: John Snow <jsnow@redhat.com> Reviewed-by: Beraldo Leal <bleal@redhat.com> Message-id: 20220207213039.2278569-1-jsnow@redhat.com Signed-off-by: John Snow <jsnow@redhat.com>
41 lines
989 B
Python
Executable File
41 lines
989 B
Python
Executable File
#!/usr/bin/env python3
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"""
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QEMU tooling installer script
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Copyright (c) 2020-2021 John Snow for Red Hat, Inc.
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"""
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import setuptools
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from setuptools.command import bdist_egg
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import sys
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import pkg_resources
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class bdist_egg_guard(bdist_egg.bdist_egg):
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"""
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Protect against bdist_egg from being executed
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This prevents calling 'setup.py install' directly, as the 'install'
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CLI option will invoke the deprecated bdist_egg hook. "pip install"
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calls the more modern bdist_wheel hook, which is what we want.
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"""
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def run(self):
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sys.exit(
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'Installation directly via setup.py is not supported.\n'
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'Please use `pip install .` instead.'
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)
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def main():
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"""
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QEMU tooling installer
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"""
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# https://medium.com/@daveshawley/safely-using-setup-cfg-for-metadata-1babbe54c108
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pkg_resources.require('setuptools>=39.2')
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setuptools.setup(cmdclass={'bdist_egg': bdist_egg_guard})
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if __name__ == '__main__':
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main()
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