anchor.diff:    bsod = callPackage ../misc/emulators/bsod { };
   
     btrfs-progs = callPackage ../tools/filesystems/btrfs-progs { };
  +  btrfs-progs_4_4_1 = callPackage ../tools/filesystems/btrfs-progs/4.4.1.nix { };
   
     btrbk = callPackage ../tools/backup/btrbk { };
   
  
positive.code: 
    smartdeblur = callPackage ../applications/graphics/smartdeblur { };
  
    snapper = callPackage ../tools/misc/snapper { };
  
    snd = callPackage ../applications/audio/snd { };
  
  
negative.code:   };
  
    docker = callPackage ../applications/virtualization/docker {
      btrfs-progs = btrfs-progs_4_4_1;
      go = go_1_4;
    };
  
  