anchor.diff:      homepage = https://software.intel.com/en-us/mkl;
       license = licenses.issl;
       platforms = [ "x86_64-linux" "x86_64-darwin" ];
  -    maintainers = [ maintainers.bhipple ];
  +    maintainers = with maintainers; [ bhipple ];
     };
   }
  
positive.code:   # larger updated load commands do not fit. Use install_name_tool
    # explicitly and ignore the error.
    postFixup = stdenvNoCC.lib.optionalString stdenvNoCC.isDarwin ''
        for f in $out/lib/*.dylib; do
            install_name_tool -id $out/lib/$(basename $f) $f || true
        done
        install_name_tool -change @rpath/libiomp5.dylib $out/lib/libiomp5.dylib $out/lib/libmkl_intel_thread.dylib
        install_name_tool -change @rpath/libtbb.dylib $out/lib/libtbb.dylib $out/lib/libmkl_tbb_thread.dylib
        install_name_tool -change @rpath/libtbbmalloc.dylib $out/lib/libtbbmalloc.dylib $out/lib/libtbbmalloc_proxy.dylib
    '';
  
    # Per license agreement, do not modify the binary
  
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.
  */
  let
    # Release notes and download URLs are here:
    # https://registrationcenter.intel.com/en/products/
    version = "${year}.${spot}.${rel}";
    year = "2019";
  
    # Darwin is pinned to 2019.3 because the DMG does not unpack; see here for details:
    # https://github.com/matthewbauer/undmg/issues/4
    spot = if stdenvNoCC.isDarwin then "3" else "5";
    rel = if stdenvNoCC.isDarwin then "199" else "281";
  
    rpm-ver = "${year}.${spot}-${rel}-${year}.${spot}-${rel}";
  
    # Intel openmp uses its own versioning, but shares the spot release patch.
    openmp-ver = "19.0.${spot}-${rel}-19.0.${spot}-${rel}";
  
  in stdenvNoCC.mkDerivation {
    pname = "mkl";
    inherit version;
  
    src = if stdenvNoCC.isDarwin
      then
  