The pkg_resources import used by the dependency generator when it hits valid python egg/wheel/dist metadata is part of the setuptools module.

I suppose that most cases won't trigger this in a scenario where setuptools won't also be in the build environment (since the import is conditionally invoked), but in theory it's possible to have a legacy distutils-based module with zero deps that pull in setuptools, which would make the dep generator break.

Would a conditional Requires work here?

Like, for example:

Requires: (python3-setuptools if (python-rpm-macros or python3-devel or python2-devel))

Dominique Leuenberger (dimstar) - almost 5 years ago

reviewer

Rich deps (hard deps) are a huge problem: as soon as we start adding such things, we block all kind of zypper dup from openSUSE versions to TW where $old-version does not have rpm/zypp with rich dep support.

So far we limited ourselves to weak rich deps, so they can 'simply be ignored' (not perfect, but ok-ish)

Neal Gompa (Pharaoh_Atem) - almost 5 years ago

But SLE 15 supports this, so SLE 15 to TW/SLE 16 should work.

The troublesome one would be SLE 12 to SLE 16, I guess. But are direct upgrades from SLE 12 to SLE 16 going to be supported?