anchor.diff:      repo = "openpmix";
       owner = "openpmix";
       rev = "v${version}";
  -    sha256 = "0fvfsig20amcigyn4v3gcdxc0jif44vqg37b8zzh0s8jqqj7jz5w";
  +    sha256 = "171hpz0m6lpyjd1hkxy7fl06fcgymz8cssqgbxzg92b7x595276b";
     };
   
     postPatch = ''
  
positive.code:     patchShebangs ./config
    '';
  
    nativeBuildInputs = [ perl autoconf automake libtool flex ];
  
    buildInputs = [ libevent hwloc munge zlib ];
  
  
negative.code: { stdenv, fetchFromGitHub, perl, autoconf, automake
  , libtool, flex, libevent, hwloc, munge, zlib, pandoc
  } :
  
  let
    version = "3.2.0";
  
  in stdenv.mkDerivation {
    pname = "pmix";
  