anchor.diff:  { stdenv, fetchurl, pkgconfig, udev, utillinux, coreutils }:
   
   let
  -  v = "2.02.104";
  +  v = "2.02.106";
   in
   
   stdenv.mkDerivation {
  
positive.code:       sed -i /DEFAULT_SYS_DIR/d Makefile.in
        sed -i /DEFAULT_PROFILE_DIR/d conf/Makefile.in
      '';
  
    #patches = [ ./purity.patch ];
  
  
negative.code: 
    src = fetchurl {
      url = "ftp://sources.redhat.com/pub/lvm2/releases/LVM2.${v}.tgz";
      sha256 = "0nr833bl0q4zq52drjxmmpf7bs6kqxwa5kahwwxm9411khkxz0vc";
    };
  
    configureFlags =
  