anchor.diff:      python3
     ];
   
  -  doCheck = true;
  +  # Tests currently fail with non-Zen CPUs due to a floating point
  +  # exception in one of the generic kernels. Try to re-enable the
  +  # next release.
  +  doCheck = false;
   
     enableParallelBuilding = true;
   
  
positive.code: # Enable BLAS interface with 64-bit integer width.
  , blas64 ? false
  
  # Target architecture, use "zen" or "zen2", optimization for Zen and
  # other families is pretty much mutually exclusive in the AMD fork of
  # BLIS.
  , withArchitecture ? "zen"
  
  # Enable OpenMP-based threading.
  , withOpenMP ? true
  
negative.code:   blasIntSize = if blas64 then "64" else "32";
  in stdenv.mkDerivation rec {
    pname = "amd-blis";
    version = "3.0";
  
    src = fetchFromGitHub {
      owner = "amd";
      repo = "blis";
      rev = version;
      hash = "sha256-bbbeo1yOKse9pzbsB6lQ7pULKdzu3G7zJzTUgPXiMZY=";
    };
  
    inherit blas64;
  