anchor.diff: -{ lib, stdenv
  +{ stdenv
  +, lib
   , fetchurl
   , vala
   , meson
  
positive.code: , wrapGAppsHook
  , itstool
  , gnupg
  , libsoup
  , gnome
  , gpgme
  , python3
  
negative.code:     python3
      openssh
      gnupg
      desktop-file-utils
      gcr
      # error: Package `...' not found in specified Vala API directories or GObject-Introspection GIR directories
      # TODO: the vala setuphook should look for vala filess in targetOffset instead of hostOffset
  