doc: Mention packages needed for Javascript support.

* HACKING: Mention the gir1.2-gtk-3.0 package alongside with gjs.

diff --git a/HACKING b/HACKING
index c73b7cd7d6f3278f842009d6db248ae96ce72395..16591ca56844086afe1f0869578a02af1c09ff1c 100644 (file)
--- a/HACKING
+++ b/HACKING
@@ -153,7 +153,7 @@ are skipped. To this effect, you need to install also:
 
   * The GNOME/Mozilla JavaScript interpreter
     + Homepage: https://wiki.gnome.org/Projects/Gjs
-    + Ubuntu package: gjs
+    + Ubuntu packages: gjs gir1.2-gtk-3.0
 
   * The GNOME Vala compiler
     + Homepage: https://wiki.gnome.org/Projects/Vala