gnupg: disable gui/pinentry support by default

This solves the dependency cycle in gcr alternatively so there won't be
two gnupg store paths in a standard NixOS system which has udisks2 enabled
by default.

NixOS users are expected to use the gpg-agent user service to pull in the
appropriate pinentry flavour or install it on their systemPackages and set
it in their local gnupg agent config instead.

Co-authored-by: Florian Klink <flokli@flokli.de>

pkgs/development/libraries/gcr/default.nix

@@ -24,11 +24,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ pkgconfig gettext gobject-introspection libxslt makeWrapper vala ];
 
-  buildInputs = let
-    gpg = gnupg.override { guiSupport = false; }; # prevent build cycle with pinentry_gnome
-  in [
-    gpg libgcrypt libtasn1 dbus-glib pango gdk-pixbuf atk
-  ];
+  buildInputs = [ gnupg libgcrypt libtasn1 dbus-glib pango gdk-pixbuf atk ];
 
   propagatedBuildInputs = [ glib gtk3 p11-kit ];