libchamplain: add updateScript

pkgs/development/libraries/libchamplain/default.nix

@@ -1,37 +1,43 @@
-{ fetchurl, stdenv, pkgconfig, glib, gtk3, cairo, clutter, sqlite
+{ fetchurl, stdenv, pkgconfig, glib, gtk3, cairo, clutter, sqlite, gnome3
 , clutter-gtk, libsoup, gobjectIntrospection /*, libmemphis */ }:
 
+let
+  pname = "libchamplain";
+  version = "0.12.16";
+in
 stdenv.mkDerivation rec {
-  major = "0.12";
+  name = "${pname}-${version}";
-  version = "${major}.16";
-  name = "libchamplain-${version}";
 
   src = fetchurl {
-    url = "mirror://gnome/sources/libchamplain/${major}/${name}.tar.xz";
+    url = "mirror://gnome/sources/${pname}/${gnome3.versionBranch version}/${name}.tar.xz";
     sha256 = "13chvc2n074i0jw5jlb8i7cysda4yqx58ca6y3mrlrl9g37k2zja";
   };
 
-  nativeBuildInputs = [ pkgconfig ];
+  nativeBuildInputs = [ pkgconfig gobjectIntrospection ];
-  buildInputs = [ gobjectIntrospection ];
 
   propagatedBuildInputs = [ glib gtk3 cairo clutter-gtk sqlite libsoup ];
 
+  passthru = {
+    updateScript = gnome3.updateScript {
+      packageName = pname;
+    };
+  };
+
   meta = with stdenv.lib; {
-    inherit version;
+    homepage = https://wiki.gnome.org/Projects/libchamplain;
-    homepage = http://projects.gnome.org/libchamplain/;
     license = licenses.lgpl2Plus;
 
     description = "C library providing a ClutterActor to display maps";
 
-    longDescription =
+    longDescription = ''
-      '' libchamplain is a C library providing a ClutterActor to display
+      libchamplain is a C library providing a ClutterActor to display
        maps.  It also provides a Gtk+ widget to display maps in Gtk+
        applications.  Python and Perl bindings are also available.  It
        supports numerous free map sources such as OpenStreetMap,
        OpenCycleMap, OpenAerialMap, and Maps for free.
     '';
 
-     maintainers = [ ];
+     maintainers = gnome3.maintainers;
      platforms = platforms.gnu;  # arbitrary choice
   };
 }