anchor.diff:        bn=$(basename $f)
         substituteInPlace $f \
           --replace "prefix=<INSTALLDIR>/mkl" "prefix=$out" \
  +        --replace $\{MKLROOT} "$out" \
           --replace "lib/intel64_lin" "lib"
       done
   
  
positive.code: { stdenvNoCC, fetchurl, rpmextract, undmg, darwin, enableStatic ? false }:
  /*
    For details on using mkl as a blas provider for python packages such as numpy,
    numexpr, scipy, etc., see the Python section of the NixPkgs manual.
  
negative.code:     else
        [ rpmextract ];
  
    installCheckInputs = [ pkgconfig ];
  
    doInstallCheck = true;
  
    buildPhase = if stdenvNoCC.isDarwin then ''
      for f in Contents/Resources/pkg/*.tgz; do
        tar xzvf $f
  