https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=259981
--- Comment #6 from Stefan Eßer <s...@freebsd.org> ---
I can confirm that py-setuptools_scm installed prevents building of other
Python ports, if py-packaging or py-pyparsing are not available.
But I do not see any issue when updating these ports with portmaster.
I have tested all permutations of port names in the following command:
# portmaster devel/py-pyparsing devel/py-packaging devel/py-setuptools_scm
And in all cases the re-installation succeeded (as would have a port upgrade):
===>>> The following actions were performed:
Re-installation of py38-pyparsing-3.0.6
Re-installation of py38-packaging-21.3
Re-installation of py38-setuptools_scm-6.3.2
The dependency checks performed by portmaster are somewhat different from those
performed by a plain make, since portmaster plans all updates before starting
the first one.
But the updates are then performed in the same way as by a plain "make all
deinstall install" in the port directory.
Portmaster considers RUN_DEPENDS to actually mean that, i.e. a dependency that
has to be provided to run the program built by the port. This is different from
a plain "make", since that performs builds and installations of RUN_TIME
dependencies before starting the "stage" phase.
But this difference is irrelevant for this PR.
A solution to this issue might be to treat a missing py-pyparsing or
py-packaging in the same way as if py-setuptools_scm was not installed.
The huge majority of Python ports does not depend on py-setuptools_scm -
specifically py-packaging and py-pyparsing do not depend on it. (Of more than
7000 devel/py-* ports less than 70 directly depend on py-setuptools_scm.)
But if py-setuptools_scm *is* installed, a missing py-pyparsing oder
py-packages does suddenly become a configure dependency, since
py-setuptools_scm is (unnecessarily) invoked, but fails due to the missing
run-time dependency.
Thus, a missing py-pyparsing or py-packaging should not cause py-setuptools_scm
to fail in such a way, that setup.py is stopped. For ports that do not directly
depend on py-setuptools_scm, such a failure should be ignored.
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