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Resolve circular dependency of a Python package

Dear mentors,

I want to ask a question on resolving circular dependencies of Python packages, which use distutils to build, as I am trying to package oletools, for which a RFP-bug has been filed [1].

~oletools~ has a circular dependency inside its seup.py [2] to ~pcodedmp~






In turn ~pcodedmp~has a dependency on ~oletools~ in its setup.py [3]




Those are de-facto runtime dependencies, but ~pcodedmp~ is required by ~oletools~ to run the `python setup.py tests` during the build of oletools, so it is kind of a build dependency, too. I assume disabling those tests selectively, which require ~pcodedmp~ would be a viable solution, since the policy suggests to break the loop by utilizing Debian tooling [4]. Is this correct?

If so, I have a practical question about realizing it:  I consulted the documentation of pybuild [5] and am able to disable all tests, which might not be an apt solution. Therefore I tried to `export PYBUILD_TEST_ARGS=-k-test_to_skip` in the rules file, which should disable only the test(s) in question. Unfortunately this does not work as I get the error error:

`I: pybuild base:232: python3.9 setup.py test -k-test_to_skip [...snip...] error: option -k not recognized`

Do you have an idea on how to resolve this and where the problem resides? Is the pybuild-documentation misleading in this regard or is it my fault?

Thanks already in advance for your help!

Best regards,



[1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=939464

[2] https://github.com/decalage2/oletools/blob/master/setup.py

[3] https://github.com/bontchev/pcodedmp/blob/master/setup.py

[4] https://www.debian.org/doc/debian-policy/ch-relationships.html#binary-dependencies-depends-recommends-suggests-enhances-pre-depends

[5] See https://wiki.debian.org/Python/Pybuild

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