BLAS/LAPACK fixup and expand docs #85799
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To match the soname, we need to use libblas.so.3, liblapack.so.3.
To avoid segmentation fault on MKL, we need to use the CBLAS ABI. Normally, scipy will autodetect this, but here we don’t link using the ‘libmkl_rt.so’ name. So we need to manually set this. See https://github.com/scipy/scipy/blob/50012918db47f0ec3418dd53f0277daa589f82e3/doc/source/building/linux.rst#fortran-abi-mismatch
This adds some more information to the documentation as well as addressing review from NixOS#85636.
| ln -s $out/lib/libopenblas${stdenv.hostPlatform.extensions.sharedLibrary} $out/lib/libblas${stdenv.hostPlatform.extensions.sharedLibrary}${stdenv.lib.optionalString stdenv.hostPlatform.isLinux ".3"} | ||
| ln -s $out/lib/libopenblas${stdenv.hostPlatform.extensions.sharedLibrary} $out/lib/libcblas${stdenv.hostPlatform.extensions.sharedLibrary}${stdenv.lib.optionalString stdenv.hostPlatform.isLinux ".3"} | ||
| ln -s $out/lib/libopenblas${stdenv.hostPlatform.extensions.sharedLibrary} $out/lib/liblapack${stdenv.hostPlatform.extensions.sharedLibrary}${stdenv.lib.optionalString stdenv.hostPlatform.isLinux ".3"} | ||
| ln -s $out/lib/libopenblas${stdenv.hostPlatform.extensions.sharedLibrary} $out/lib/liblapacke${stdenv.hostPlatform.extensions.sharedLibrary}${stdenv.lib.optionalString stdenv.hostPlatform.isLinux ".3"} |
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This is getting long enough that it might be worth factoring out into a helper var.
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yes - we can actually use passthru from blas/lapack here without infinite recursion, but it's kind of confusing conceptually
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Great, managed to build through most of the scientific computing stack with Just the one documentation fix on |
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Since I just had a documentation comment and others have approved the PR, and since it's fixing builds on master and causing a lot of rebuilds, I went ahead and applied my doc update, then merged it so that Hydra can catch up. |
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Alright! |
Addresses comments left in #85636.
/cc @drewrisinger @bhipple
Things done
sandboxinnix.confon non-NixOS linux)nix-shell -p nixpkgs-review --run "nixpkgs-review wip"./result/bin/)nix path-info -Sbefore and after)