anchor.diff:  , bison
   , fetchurl
   , gperf
  +, lib
   , perl
   , python2
   , which
   
   , alsa-lib
   , bluez
  +, compositeproto
  +, damageproto
   , cups
   , dbus
   , double-conversion
   , expat
  +, fixesproto
   , fontconfig
   , freetype
   , glib
  
positive.code: , pcre2
  , postgresql
  , pulseaudio_lib
  , sqlite
  , systemd_lib
  , tslib
  , wayland
  , xorg
  , zlib
  
  , buildWebEngine ? false
  
negative.code: 
  let
    versionMajor = "5.9";
    versionPatch = "2";
    version = "${versionMajor}.${versionPatch}";
  
    inherit (stdenv.lib)
  