[gnome-builder] build-aux: generate icon cache for pkgicondir

[Christian Hergert <chergert src gnome org>]

commit f424bfe428be4f9ffb8ca9e6c0cb5487ca5cd4ee
Author: Christian Hergert <chergert redhat com>
Date:   Thu Jul 21 01:52:57 2022 -0700

    build-aux: generate icon cache for pkgicondir

 build-aux/meson/post_install.py | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/build-aux/meson/post_install.py b/build-aux/meson/post_install.py
index cc5e2a638..6dfd4c20e 100755
--- a/build-aux/meson/post_install.py
+++ b/build-aux/meson/post_install.py
@@ -16,6 +16,10 @@ if 'DESTDIR' not in os.environ:
     subprocess.call(['gtk-update-icon-cache', '-qtf',
                      os.path.join(datadir, 'icons', 'hicolor')])
 
+    print('Updating package icon cache...')
+    subprocess.call(['gtk-update-icon-cache', '-qtf',
+                     os.path.join(datadir, 'gnome-builder', 'icons', 'hicolor')])
+
     print('Updating desktop database...')
     subprocess.call(['update-desktop-database', '-q',
                      os.path.join(datadir, 'applications')])