tepl: split to multiple outputs

So that gtk3.dev is not pulled into the closure.

pkgs/development/libraries/tepl/default.nix

@@ -15,6 +15,8 @@ stdenv.mkDerivation rec {
   pname = "tepl";
   version = "5.0.0";
 
+  outputs = [ "out" "dev" ];
+
   src = fetchurl {
     url = "mirror://gnome/sources/${pname}/${stdenv.lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
     sha256 = "0x2s0ks575b57jdqnp9r9miz40pm705n2dlj2k8bfj1hyl22kgf6";