anchor.diff:  , bash
   , gobject-introspection
   , libsoup
  -, gtksourceview
  +, gtksourceview4
   , gsettings-desktop-schemas
   , adwaita-icon-theme
   , gnome
  -, gtkspell3
  +, gspell
   , shared-mime-info
   , libgee
   , libgit2-glib
  
positive.code:     glib
      gsettings-desktop-schemas
      gtk3
      gtksourceview
      gtkspell3
      json-glib
      libdazzle
      libgee
  
negative.code: 
  stdenv.mkDerivation rec {
    pname = "gitg";
    version = "41";
  
    src = fetchurl {
      url = "mirror://gnome/sources/${pname}/${lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
      sha256 = "f7Ybn7EPuqVI0j1wZbq9cq1j5iHeVYQMBlzm45hsRik=";
    };
  
    nativeBuildInputs = [
  