build: Add post-install script to update caches

Update the desktop, schema and icon caches.

Signed-off-by: Philip Withnall <withnall@endlessm.com>

Helps: #9

build-aux/meson_post_install.py

@@ -0,0 +1,20 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+import os
+import subprocess
+
+install_prefix = os.environ['MESON_INSTALL_PREFIX']
+schemadir = os.path.join(install_prefix, 'share', 'glib-2.0', 'schemas')
+
+if not os.environ.get('DESTDIR'):
+    print('Compiling gsettings schemas…')
+    subprocess.call(['glib-compile-schemas', schemadir])
+
+    print('Updating icon cache…')
+    icon_cache_dir = os.path.join(install_prefix, 'share', 'icons', 'hicolor')
+    subprocess.call(['gtk-update-icon-cache', '-qtf', icon_cache_dir])
+
+    print('Updating desktop database…')
+    desktop_database_dir = os.path.join(install_prefix, 'share', 'applications')
+    subprocess.call(['update-desktop-database', '-q', desktop_database_dir])

meson.build

@@ -133,3 +133,5 @@ subdir('malcontent-client')
 subdir('malcontent-control')
 subdir('pam')
 subdir('po')
+
+meson.add_install_script('build-aux/meson_post_install.py')