Parabola GNU/Linux-libre: OpenBLAS >= 0.3.23-2 update requires manual intervention

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From Arch:

The openblas package prior to version 0.3.23-2 doesn’t ship optimized
LAPACK routine and CBLAS/LAPACKE interfaces for compatibility. This
decision has been reverted now, and the ability to choose a different
default system BLAS/LAPACK implementation while keeping openblas
installed is now provided to allow future co-installation of BLIS,
ATLAS, etc.

The default BLAS implementation will be used for most packages like
NumPy or R. Please install “blas-openblas” and “blas64-openblas” to make
OpenBLAS the default BLAS implementation, just like the old behavior.

Unfortunately you will get errors on updating if you currently have
OpenBLAS installed as the default BLAS implementation:

error: failed to prepare transaction (could not satisfy dependencies)
:: installing openblas (0.3.23-2) breaks dependency ‘blas’ required by cblas
:: installing openblas (0.3.23-2) breaks dependency ‘blas’ required by
lapack

Please append your preferred default BLAS implementation to the regular
-Syu command line to get around it. For example:

# pacman -Syu blas-openblas

or

# pacman -Syu blas

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