anchor.diff:      owner = "hfp";
       repo = "libxsmm";
       rev = "refs/tags/${version}";
  -    sha256 = "1c15ccy7vbmvxkfnc7sn26wnf6gr6gxgkmilpgpycm1fhi8ikd6w";
  +    sha256 = "1406qk7k2k4qfqy4psqk55iihsrx91w8kjgsa82jxj50nl9nw5nj";
     };
   
     buildInputs = [
  
positive.code: }:
  
  let
    version = "1.13";
  in stdenv.mkDerivation {
    pname = "libxsmm";
    inherit version;
  
negative.code:   meta = with stdenv.lib; {
      description = "Library targeting Intel Architecture for specialized dense and sparse matrix operations, and deep learning primitives";
      license = licenses.bsd3;
      homepage = "https://github.com/hfp/libxsmm";
      platforms = platforms.linux;
      maintainers = with stdenv.lib.maintainers; [ chessai ];
      inherit version;
  