anchor.diff:  , gfortran
   , blas
   , boost
  -, python
  +, python3
   , ocl-icd
   , opencl-headers
   , Accelerate, CoreGraphics, CoreVideo, OpenCL
  
positive.code:     OpenCL
    ];
  
    meta = with lib; {
      homepage = "https://github.com/clMathLibraries/clBLAS";
      description = "A software library containing BLAS functions written in OpenCL";
  
negative.code:   buildInputs = [
      gfortran
      blas
      python3
      boost
    ] ++ lib.optionals (!stdenv.isDarwin) [
      ocl-icd
  