x11: replace its usage by xlibsWrapper directly

Scilab note: the parameters already had pointed to nonexistent dirs
before this set of refactoring. But that config wasn't even used by
default.

pkgs/applications/window-managers/ion-3/default.nix

@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, x11, lua, gettext, groff }:
+{ stdenv, fetchurl, xlibsWrapper, lua, gettext, groff }:
 
 stdenv.mkDerivation {
   name = "ion-3-20090110";
@@ -10,7 +10,7 @@ stdenv.mkDerivation {
     url = http://tuomov.iki.fi/software/dl/ion-3-20090110.tar.gz;
     sha256 = "1nkks5a95986nyfkxvg2rik6zmwx0lh7szd5fji7yizccwzc9xns";
   };
-  buildInputs = [ x11 lua gettext groff ];
+  buildInputs = [ xlibsWrapper lua gettext groff ];
   buildFlags = "LUA_DIR=${lua} X11_PREFIX=/no-such-path PREFIX=\${out}";
   installFlags = "PREFIX=\${out}";
 }