glibmm: 2.48.1 -> 2.50.0

pkgs/development/libraries/glibmm/default.nix

@@ -1,15 +1,15 @@
 { stdenv, fetchurl, pkgconfig, gnum4, glib, libsigcxx }:
 
 let
-  ver_maj = "2.48";
-  ver_min = "1";
+  ver_maj = "2.50";
+  ver_min = "0";
 in
 stdenv.mkDerivation rec {
   name = "glibmm-${ver_maj}.${ver_min}";
 
   src = fetchurl {
     url = "mirror://gnome/sources/glibmm/${ver_maj}/${name}.tar.xz";
-    sha256 = "1pvw2mrm03p51p03179rb6fk9p42iykkwj1jcdv7jr265xymy8nw";
+    sha256 = "df726e3c6ef42b7621474b03b644a2e40ec4eef94a1c5a932c1e740a78f95e94";
   };
 
   outputs = [ "out" "dev" ];