anchor.diff:        cp -r opt/intel/compilers_and_libraries_${version}/linux/compiler/lib/intel64_lin/* $out/lib/
         cp -r opt/intel/compilers_and_libraries_${version}/linux/mkl/lib/intel64_lin/* $out/lib/
         cp license.txt $out/lib/
  -  '';
  +
  +      mkdir -p $out/lib/pkgconfig
  +      cp -r opt/intel/compilers_and_libraries_${version}/linux/mkl/bin/pkgconfig/* $out/lib/pkgconfig
  +  '');
   
     # fixDarwinDylibName fails for libmkl_cdft_core.dylib because the
     # larger updated load commands do not fit. Use install_name_tool
  
positive.code:     platforms = [ "x86_64-linux" "x86_64-darwin" ];
      maintainers = [ maintainers.bhipple ];
    };
   } // stdenvNoCC.lib.optionalAttrs stdenvNoCC.isLinux {
    # Since on Linux binaries are unmodified, we can make them
    # fixed-output derivations.
  	outputHashAlgo = "sha256";
  	outputHashMode = "recursive";
  	outputHash = "101krzh2mjbfx8kvxim2zphdvgg7iijhbf9xdz3ad3ncgybxbdvw";
   })
  
negative.code:   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.
  */
  stdenvNoCC.mkDerivation rec {
    name = "mkl-${version}";
    version = "${date}.${rel}";
    date = "2019.3";
  