anchor.diff:  
   stdenv.mkDerivation rec {
     pname = "dmtcp";
  -  version = "2.5.2";
  +  version = "2.6.0";
   
     src = fetchFromGitHub {
  -    owner = "dmtcp";
  -    repo = "dmtcp";
  +    owner = pname;
  +    repo = pname;
       rev = version;
  -    sha256 = "1sq38in4wk855yhfnzbs9xpnps97fhja93w08xjmx7szzm33g5a8";
  +    sha256 = "01skyhr573w1dygvkwz66lvir2jsq443fjwkysglwxvmrdfz9kwd";
     };
   
     dontDisableStatic = true;
  
positive.code:       --replace "os.getenv('USER')" "\"nixbld1\""
    '';
  
    meta = {
      description = "Distributed MultiThreaded Checkpointing";
      longDescription = ''
        DMTCP (Distributed MultiThreaded Checkpointing) is a tool to
  
negative.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 = licenses.lgpl3Plus; # most files seem this or LGPL-2.1+
      platforms = intersectLists platforms.linux platforms.x86; # broken on ARM and Darwin
    };
  }
  