anchor.diff:        --replace "os.getenv('USER')" "\"nixbld1\""
     '';
   
  -  meta = {
  +  meta = with stdenv.lib; {
       description = "Distributed MultiThreaded Checkpointing";
       longDescription = ''
         DMTCP (Distributed MultiThreaded Checkpointing) is a tool to
  
positive.code:       programs spread across many machines and connected by sockets. It does
        not modify the user's program or the operating system.
      '';
      homepage = http://dmtcp.sourceforge.net/;
      license = stdenv.lib.licenses.lgpl3Plus; # most files seem this or LGPL-2.1+
    };
  }
  
negative.code: 
  stdenv.mkDerivation rec {
    pname = "dmtcp";
    version = "2.6.0";
  
    src = fetchFromGitHub {
      owner = pname;
      repo = pname;
      rev = version;
      sha256 = "01skyhr573w1dygvkwz66lvir2jsq443fjwkysglwxvmrdfz9kwd";
    };
  
    dontDisableStatic = true;
  