gcr_4: remove build gnupg from runtime closure

pkgs/development/libraries/gcr/4.nix

@@ -35,6 +35,8 @@ stdenv.mkDerivation rec {
     sha256 = "nOqtKShLqRm5IW4oiMGOxnJAwsk7OkhWvFSIu8Hzo4M=";
   };
 
+  strictDeps = true;
+
   nativeBuildInputs = [
     pkg-config
     meson
@@ -49,7 +51,6 @@ stdenv.mkDerivation rec {
   ];
 
   buildInputs = [
-    gnupg
     libgcrypt
     libtasn1
     pango
@@ -72,6 +73,7 @@ stdenv.mkDerivation rec {
     # We are still using ssh-agent from gnome-keyring.
     # https://github.com/NixOS/nixpkgs/issues/140824
     "-Dssh_agent=false"
+    "-Dgpg_path=${lib.getBin gnupg}/bin/gpg"
   ];
 
   doCheck = false; # fails 21 out of 603 tests, needs dbus daemon