anchor.diff:      else
         [ rpmextract ];
   
  +  installCheckInputs = [ pkgconfig ];
  +
  +  doInstallCheck = true;
  +
     buildPhase = if stdenvNoCC.isDarwin then ''
       for f in Contents/Resources/pkg/*.tgz; do
         tar xzvf $f
  
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:       bn=$(basename $f)
        substituteInPlace $f \
          --replace "prefix=<INSTALLDIR>/mkl" "prefix=$out" \
          --replace $\{MKLROOT} "$out" \
          --replace "lib/intel64_lin" "lib"
      done
  
  