buildout has no knowledge of setup_requires, when installing a package with setup_requires, setuptools will fetch the package from pypi and install its latest version, regardless of buildout's versions or allow-picked-versions options, that are critical for us to ensure repeatability.

These patches were produced by running buildout with a modified setuptools version which does not install setup_requires ( jerome/setuptools@54f42c38 ) and by modifying the profiles to use setup-eggs option in all the sections installing packages using setup_requires.