[gnome-todo/wip/jtojnar/gir-gtk4] introspection: Depend on GTK 4

[Jan Tojnar <jtojnar src gnome org>]

commit ac816ab2b78448faccfbde974692f5dc8bbd41d7
Author: Jan Tojnar <jtojnar gmail com>
Date:   Fri May 14 14:02:48 2021 +0000

    introspection: Depend on GTK 4
    
    Otherwise, the package will not build without GTK 3.

 src/meson.build | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
---
diff --git a/src/meson.build b/src/meson.build
index 88654299..9ab95215 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -1,4 +1,3 @@
-
 sources = []
 
 #######
@@ -318,7 +317,7 @@ if get_option('introspection')
   gir_incs = [
     'Gio-2.0',
     'GObject-2.0',
-    'Gtk-3.0'
+    'Gtk-4.0'
   ]
 
   gir_extra_args = '--warn-all'