anchor.diff:      repo   = "pass-${p.name}";
       inherit (p) rev sha256;
     })) [
  -    { name = "import"; rev = "491935bd275f29ceac2b876b3a288011d1ce31e7"; sha256 = "02mbh05ab8h7kc30hz718d1d1vkjz43b96c7p0xnd92610d2q66q"; }
  -    { name = "update"; rev = "cf576c9036fd18efb9ed29e0e9f811207b556fde"; sha256 = "1hhbrg6a2walrvla6q4cd3pgrqbcrf9brzjkb748735shxfn52hd"; }
  +    { name = "import";
  +      rev = "491935bd275f29ceac2b876b3a288011d1ce31e7"; sha256 = "02mbh05ab8h7kc30hz718d1d1vkjz43b96c7p0xnd92610d2q66q"; }
  +    { name = "update";
  +      rev = "cf576c9036fd18efb9ed29e0e9f811207b556fde"; sha256 = "1hhbrg6a2walrvla6q4cd3pgrqbcrf9brzjkb748735shxfn52hd"; }
  +    { name = "tomb";
  +      rev = "3368134898a42c1b758fabac625ec240e125c6be"; sha256 = "0qqmxfg4w3r088qhlkhs44036mya82vjflsjjhw2hk8y0wd2i6ds"; }
     ];
   
   in stdenv.mkDerivation rec {
  
positive.code: 
  , xclip ? null, xdotool ? null, dmenu ? null
  , x11Support ? !stdenv.isDarwin
  }:
  
  with lib;
  
negative.code:     tree
      which
      qrencode
      tomb
    ] ++ stdenv.lib.optional stdenv.isLinux procps
      ++ ifEnable x11Support [ dmenu xclip xdotool ]);
  
  