anchor.diff:      ] ++ stdenv.lib.optional (stdenv.hostPlatform.libc == "musl") "NO_AFFINITY=1"
       ++ mapAttrsToList (var: val: var + "=" + val) config;
   
  -  patches = []; # TODO: Remove on next mass-rebuild
  +    patches = [
  +      # Backport of https://github.com/xianyi/OpenBLAS/pull/1667, which
  +      # is causing problems and was already accepted upstream.
  +      (fetchpatch {
  +        url = "https://github.com/xianyi/OpenBLAS/commit/5f2a3c05cd0e3872be3c5686b9da6b627658eeb7.patch";
  +        sha256 = "1qvxhk92likrshw6z6hjqxvkblwzgsbzis2b2f71bsvx9174qfk1";
  +      })
  +    ];
   
     doCheck = true;
     checkTarget = "tests";
  
positive.code: { stdenv, fetchurl, fetchpatch, gfortran, perl, which, config, coreutils
  # Most packages depending on openblas expect integer width to match
  # pointer width, but some expect to use 32-bit integers always
  # (for compatibility with reference BLAS).
  
negative.code: stdenv.mkDerivation rec {
    name = "openblas-${version}";
    version = "0.3.1";
    src = fetchFromGitHub {
      owner = "xianyi";
      repo = "OpenBLAS";
      rev = "v${version}";
      sha256 = "1dkwp4gz1hzpmhzks9y9ipb4c5h0r6c7yff62x3s8x9z6f8knaqc";
    };
  
    inherit blas64;
  