openbabel fails to build with Python 3.14.0a4.

  4/225 Test   #4: test_align_4 .....................***Failed  Error regular expression found in output. Regex=[FAIL]  0.10 sec
==============================
*** Open Babel Error  in Align
  Cannot align the reference and target as they are of different size
==============================
*** Open Babel Error  in GetRMSD
  RMSD not available until you call Align()
/builddir/build/BUILD/openbabel-3.1.1-build/openbabel-openbabel-3-1-1/test/aligntest.cpp:183: fabs(rmsd) > 1.0E-2 (FAIL)

        Start   5: test_align_5
  5/225 Test   #5: test_align_5 .....................Subprocess aborted***Exception:   0.14 sec
==============================
*** Open Babel Error  in Align
  Cannot align the reference and target as they are of different size
==============================
*** Open Babel Error  in GetRMSD
  RMSD not available until you call Align()
/builddir/build/BUILD/openbabel-3.1.1-build/openbabel-openbabel-3-1-1/test/aligntest.cpp:221: fabs(rmsd) > 1.0E-3 (FAIL)
==============================
*** Open Babel Error  in GetAlignment
  Alignment not available until you call Align()
/builddir/build/BUILD/openbabel-3.1.1-build/openbabel-openbabel-3-1-1/test/aligntest.cpp:223: result.size() == mol.NumAtoms() (FAIL)
==============================
*** Open Babel Error  in Align
  Cannot align the reference and target as they are of different size
==============================
*** Open Babel Error  in GetRMSD
  RMSD not available until you call Align()
/builddir/build/BUILD/openbabel-3.1.1-build/openbabel-openbabel-3-1-1/test/aligntest.cpp:229: fabs(rmsd) < 1.0E-6 (FAIL)
==============================
*** Open Babel Error  in GetAlignment
  Alignment not available until you call Align()
/builddir/build/BUILD/openbabel-3.1.1-build/openbabel-openbabel-3-1-1/test/aligntest.cpp:231: result.size() == mol.NumAtoms() (FAIL)

https://docs.python.org/3.14/whatsnew/3.14.html

For the build logs, see:
https://copr-be.cloud.fedoraproject.org/results/@python/python3.14/fedora-rawhide-x86_64/08554838-openbabel/

For all our attempts to build openbabel with Python 3.14, see:
https://copr.fedorainfracloud.org/coprs/g/python/python3.14/package/openbabel/

Testing and mass rebuild of packages is happening in copr.
You can follow these instructions to test locally in mock if your package builds with Python 3.14:
https://copr.fedorainfracloud.org/coprs/g/python/python3.14/

Let us know here if you have any questions.

Python 3.14 is planned to be included in Fedora 43.
To make that update smoother, we're building Fedora packages with all pre-releases of Python 3.14.
A build failure prevents us from testing all dependent packages (transitive [Build]Requires),
so if this package is required a lot, it's important for us to get it fixed soon.

We'd appreciate help from the people who know this package best,
but if you don't want to work on this now, let us know so we can try to work around it on our side.