treewide: remove libintl hacks

pkgs/development/libraries/libgsf/default.nix

@@ -1,5 +1,5 @@
 { fetchurl, stdenv, pkgconfig, intltool, gettext, glib, libxml2, zlib, bzip2
-, python, perl, gdk_pixbuf, libiconv, libintlOrEmpty }:
+, python, perl, gdk_pixbuf, libiconv, libintl }:
 
 let inherit (stdenv.lib) optionals; in
 
@@ -11,21 +11,18 @@ stdenv.mkDerivation rec {
     sha256 = "1hhdz0ymda26q6bl5ygickkgrh998lxqq4z9i8dzpcvqna3zpzr9";
   };
 
-  nativeBuildInputs = [ pkgconfig intltool ];
+  nativeBuildInputs = [ pkgconfig intltool libintl ];
 
   buildInputs = [ gettext bzip2 zlib python ]
     ++ stdenv.lib.optional doCheck perl;
 
-  propagatedBuildInputs = [ libxml2 glib gdk_pixbuf libiconv ]
-    ++ libintlOrEmpty;
+  propagatedBuildInputs = [ libxml2 glib gdk_pixbuf libiconv ];
 
   outputs = [ "out" "dev" ];
 
   doCheck = true;
   preCheck = "patchShebangs ./tests/";
 
-  NIX_LDFLAGS = stdenv.lib.optionalString stdenv.isDarwin "-lintl";
-
   meta = with stdenv.lib; {
     description = "GNOME's Structured File Library";
     homepage    = https://www.gnome.org/projects/libgsf;