Note that, as boost-python does not run the Python interpreter, it should not require it. The idea is that the caller of the Boost:Python library will bring their own Python library, usually part of the Python interpreter. That way, the Boost:Python library can be used from many different Python programs, including the interpreters.

But maybe I missed your point?

Some references, as when the issue was raised a few months ago (in May 2020):
* Many packages unnecessarily link to libpython: https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org/thread/IAIUO5XU54FQM64TDXWF4YMHHWGQFNXT/
* libarcus Pull Request - Stop linking the Python module to libpython (on Python 3.8+): https://src.fedoraproject.org/rpms/libarcus/pull-request/8
* Changes/PythonStaticSpeedup: https://fedoraproject.org/wiki/Changes/PythonStaticSpeedup
* Changes/PythonNoSemanticInterpositionSpeedup: https://fedoraproject.org/wiki/Changes/PythonNoSemanticInterpositionSpeedup
* https://docs.python.org/3.8/whatsnew/3.8.html#changes-in-the-c-api
* https://bugs.python.org/issue21536

It could require it without linking to it though.

The issue is that if you have boost-python3 (for 3.9) and python3-devel (3.10) installed, you cannot really do anything.

(In reply to Miro Hrončok from comment #3)
> The issue is that if you have boost-python3 (for 3.9) and python3-devel
> (3.10) installed, you cannot really do anything.

You are right (obviously), thanks!

@Jonathan, will you add that require in the RPM specification file?

This bug appears to have been reported against 'rawhide' during the Fedora 34 development cycle.
Changing version to 34.

This is a mass-posted update. Sorry if it is not 100% accurate to this bugzilla.


The Python 3.10 rebuild is in progress in a Koji side tag. If you manage to fix the problem, please commit the fix in the rawhide branch, but don't build the package in regular rawhide.

You can either build the package in the side tag, with:

    $ fedpkg build --target=f35-python

Or you can the build and we will eventually build it for you.

Note that the rebuild is still in progress, so not all (build) dependencies of this package might be available right away.

Thanks.

See also https://fedoraproject.org/wiki/Changes/Python3.10

If you have general questions about the rebuild, please use this mailing list thread: https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org/thread/G47SGOYIQLRDTWGOSLSWERZSSHXDEDH5/

The f35-python side tag has been merged to Rawhide. From now on, build as you would normally build.

How should the requirement be expressed?


'Requires: python3 = %{python3_version}' doesn't work, because version "3.9" doesn't match the %version of the package in the repo.


Should it be Requires: 'python(abi) = ${python3_version}' ?

(In reply to Jonathan Wakely from comment #8)
> Should it be Requires: 'python(abi) = ${python3_version}' ?

Oops, that single quote was supposed to be before the Requires, i.e.

Requires: python(abi) = ${python3_version}

without any quotes.

That seems to work for a rawhide scratch build:

$ rpm -qp --requires results_boost/1.76.0/5.fc36/boost-python3-1.76.0-5.fc36.x86_64.rpm 
libc.so.6()(64bit)
libc.so.6(GLIBC_2.14)(64bit)
libc.so.6(GLIBC_2.2.5)(64bit)
libc.so.6(GLIBC_2.4)(64bit)
libgcc_s.so.1()(64bit)
libgcc_s.so.1(GCC_3.0)(64bit)
libgcc_s.so.1(GCC_3.3.1)(64bit)
libstdc++.so.6()(64bit)
libstdc++.so.6(CXXABI_1.3)(64bit)
libstdc++.so.6(CXXABI_1.3.9)(64bit)
libstdc++.so.6(GLIBCXX_3.4)(64bit)
libstdc++.so.6(GLIBCXX_3.4.15)(64bit)
libstdc++.so.6(GLIBCXX_3.4.21)(64bit)
libstdc++.so.6(GLIBCXX_3.4.29)(64bit)
libstdc++.so.6(GLIBCXX_3.4.9)(64bit)
python(abi) = 3.10
rpmlib(CompressedFileNames) <= 3.0.4-1
rpmlib(FileDigests) <= 4.6.0-1
rpmlib(PayloadFilesHavePrefix) <= 4.0-1
rpmlib(PayloadIsZstd) <= 5.4.18-1
rtld(GNU_HASH)

> How should the requirement be expressed?

That is a good question. python(abi) kinda works but feels hacky, it also cannot be arched. But it is currently the best we have unless you want a more complex macro magic that generates the requirement on:

Requires: (python3-libs%{_isa?} >= 3.10 with python3-libs%{_isa?} < 3.11)

If you do want that, I can write it.

It doesn't seem worth it for one package. I'll push the change to add the python(abi) requirement.

Although it serves no purpose in F35 (because the Python version isn't going to change now) I think I'm going to push this to the f35 branch as well. Keeping the f35 and rawhide branches in sync allows fast-forward merges for fixes such as https://src.fedoraproject.org/rpms/boost/c/bba3a6c2a04e68f2c50ec48ec20bd05c0d380493?branch=rawhide

Please let me know if you object to requiring python(abi)=3.9 for the f35 build.

No objections, except that it is 3.10. But the macro will take care of the correct value.