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numpy + scipy broken by default lapack / blas overrides #24

@ryanswrt

Description

@ryanswrt

Describe the bug

nixpkgs-unfree saves me some hassles when importing pytorch in newer nixpkgs-unstable, as it has introduced an unfree dependency. However, somewhere along the line, numpy and scipy started picking up the blas overrides, causing them to fail to build as described here: NixOS/nixpkgs#206866

To Reproduce

Steps to reproduce the behavior:

nix shell github:numtide/nixpkgs-unfree/nixos-unstable#python310Packages.numpy

Expected behavior

To be able to use numpy + scipy with nixpgkgs-unfree

Could we fix this by overriding the blas that gets passed to numpy scipy to be openblas instead?

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