openblas: disable optimisation pending fix #82587
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See OpenMathLib/OpenBLAS#2496
Motivation for this change
R is broken (test failure) on aarch64, due to a bug in OpenBLAS (Other packages may also be broken, they just don't have tests that show the breakage). The bug seems to be in code optimised for a specific platform, so reverting to the generic C implementation seems sensible until an upstream fix is available.
ZHF #80379
Things done
sandboxinnix.confon non-NixOS linux)nix-shell -p nixpkgs-review --run "nixpkgs-review wip"./result/bin/)nix path-info -Sbefore and after)