djvulibre: fix build on darwin (close #931)

pkgs/development/libraries/libgsf/default.nix

@@ -1,6 +1,5 @@
 { fetchurl, stdenv, pkgconfig, intltool, gettext, glib, libxml2, zlib, bzip2
-, python, gdk_pixbuf, libiconvOrEmpty
-}:
+, python, gdk_pixbuf, libiconvOrEmpty, libintlOrEmpty }:
 
 with { inherit (stdenv.lib) optionals; };
 
@@ -8,28 +7,32 @@ stdenv.mkDerivation rec {
   name = "libgsf-1.14.26";
 
   src = fetchurl {
-    url = "mirror://gnome/sources/libgsf/1.14/${name}.tar.xz";
+    url    = "mirror://gnome/sources/libgsf/1.14/${name}.tar.xz";
     sha256 = "1md67l60li7rkma9m6mwchqz6b6q4xsfr38c6n056y6xm8jyf6c9";
   };
 
   nativeBuildInputs = [ pkgconfig intltool ];
+
   buildInputs = [ gettext bzip2 zlib python ];
 
-  propagatedBuildInputs = [ libxml2 glib gdk_pixbuf ] ++ libiconvOrEmpty;
+  propagatedBuildInputs = [ libxml2 glib gdk_pixbuf ]
+    ++ libiconvOrEmpty
+    ++ libintlOrEmpty;
 
   doCheck = true;
 
-  meta = {
-    homepage = http://www.gnome.org/projects/libgsf;
-    license = "LGPLv2";
+  NIX_LDFLAGS = stdenv.lib.optionalString stdenv.isDarwin "-lintl";
+
+  meta = with stdenv.lib; {
     description = "GNOME's Structured File Library";
+    homepage    = http://www.gnome.org/projects/libgsf;
+    license     = licenses.lgpl2Plus;
+    maintainers = with maintainers; [ lovek323 ];
+    platforms   = stdenv.lib.platforms.unix;
 
     longDescription = ''
       Libgsf aims to provide an efficient extensible I/O abstraction for
       dealing with different structured file formats.
     '';
-
-    maintainers = [ ];
-    platforms = stdenv.lib.platforms.linux;
   };
 }