anchor.diff: -{ lib, stdenv, fetchFromGitLab, meson, ninja, cmake
  +{ lib, stdenv, fetchFromGitLab, meson, ninja
   , wrapGAppsHook, pkg-config, desktop-file-utils
   , appstream-glib, pythonPackages, glib, gobject-introspection
   , gtk3, webkitgtk, glib-networking, gnome, gspell, texlive
  -, shared-mime-info, libhandy, fira
  +, shared-mime-info, libhandy, fira, sassc
   }:
   
   let
  
positive.code:   '';
  
    meta = with lib; {
      homepage = "https://gitlab.gnome.org/somas/apostrophe";
      description = "A distraction free Markdown editor for GNU/Linux";
      license = licenses.gpl3;
      platforms = platforms.linux;
  
negative.code: 
  in stdenv.mkDerivation rec {
    pname = "apostrophe";
    version = "2.5";
  
    src = fetchFromGitLab {
      owner  = "World";
      repo   = pname;
      domain = "gitlab.gnome.org";
      rev    = "v${version}";
      sha256 = "06yfiflmj3ip7ppcz41nb3xpgb5ggw5h74w0v87yaqqkq7qh31lp";
    };
  
    nativeBuildInputs = [ meson ninja pkg-config desktop-file-utils
      appstream-glib wrapGAppsHook sassc ];
  
    buildInputs = [ glib pythonEnv gobject-introspection gtk3
      gnome.adwaita-icon-theme webkitgtk gspell texlive
  