anchor.diff: -{ lib, fetchFromGitHub, stdenv, bitlbee, autoconf, automake, libtool, pkg-config, glib, json-glib }:
  +{ lib, fetchFromGitHub, fetchpatch, stdenv, bitlbee, autoconf, automake, libtool, pkg-config, json-glib }:
   
  -with lib;
   stdenv.mkDerivation rec {
     pname = "bitlbee-facebook";
     version = "1.2.1";
  
positive.code:     sha256 = "1yjhjhk3jzjip13lq009vlg84lm2lzwhac5jy0aq3vkcz6rp94rc";
    };
  
    nativeBuildInputs = [ autoconf automake libtool pkg-config ];
  
    buildInputs = [ bitlbee json-glib ];
  
negative.code:     ./autogen.sh
    '';
  
    meta = with lib; {
      description = "The Facebook protocol plugin for bitlbee";
      homepage = "https://github.com/bitlbee/bitlbee-facebook";
      license = licenses.gpl2Plus;
      maintainers = with maintainers; [ toonn ];
      platforms = platforms.linux;
    };
  }
  