gem-config: add native taglib dependency to taglib-ruby gem

pkgs/development/ruby-modules/gem-config/default.nix

@@ -23,7 +23,7 @@
 , cmake, libssh2, openssl, mysql, darwin, git, perl, pcre, gecode_3, curl
 , msgpack, qt59, libsodium, snappy, libossp_uuid, lxc, libpcap, xorg, gtk2, buildRubyGem
 , cairo, re2, rake, gobject-introspection, gdk_pixbuf, zeromq, czmq, graphicsmagick, libcxx
-, file, libvirt, glib, vips
+, file, libvirt, glib, vips, taglib
 , libselinux ? null, libsepol ? null
 }@args:
 
@@ -423,6 +423,10 @@ in
     '';
   };
 
+  taglib-ruby = attrs: {
+    buildInputs = [ taglib ];
+  };
+
   timfel-krb5-auth = attrs: {
     buildInputs = [ kerberos ];
   };