py-numpy @1.26.2 +openblas: Fails to configure with OpenBLAS, defaults to Accelerate

[nilason (Nicklas Larsson)]

Configuring py-numpy with +openblas fails to pick up OpenBLAS and defaults to Accelerate:

sudo port -vs install py312-numpy +openblas
--->  Computing dependencies for py312-numpy.
--->  Fetching distfiles for py312-numpy
--->  Verifying checksums for py312-numpy
--->  Checksumming numpy-1.26.2.tar.gz
...
Run-time dependency scipy-openblas found: NO (tried pkgconfig)
WARNING: MKLROOT env var set to /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_python_py-numpy/py312-numpy/work/numpy-1.26.2/.mesonpy-kgu4_xb7/build/None, but not pointing to an MKL install
Run-time dependency mkl found: NO (tried pkgconfig and system)
WARNING: MKLROOT env var set to /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_python_py-numpy/py312-numpy/work/numpy-1.26.2/.mesonpy-kgu4_xb7/build/None, but not pointing to an MKL install
Run-time dependency mkl found: NO (tried pkgconfig and system)
Run-time dependency accelerate found: YES
../../numpy/meson.build:124: WARNING: Project targets '>=1.2.99' but uses feature introduced in '1.3.0': dep 'accelerate' custom lookup.
Message: BLAS symbol suffix: $NEWLAPACK
...

Resulting in e.g.:

otool -L /opt/local/Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/site-packages/numpy/linalg/_umath_linalg.cpython-312-darwin.so
/opt/local/Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/site-packages/numpy/linalg/_umath_linalg.cpython-312-darwin.so:
	/System/Library/Frameworks/Accelerate.framework/Versions/A/Accelerate (compatibility version 1.0.0, current version 4.0.0)
	/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1336.61.1)