[dconf-editor] Improve meson_post_install.py.

[Arnaud Bonatti <arnaudb src gnome org>]

commit 7d4f1c7e246044bd0674cb0882a58aa47a466a11
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Mon Feb 26 16:19:30 2018 +0100

    Improve meson_post_install.py.

 meson_post_install.py |   22 +++++++++++++++-------
 1 files changed, 15 insertions(+), 7 deletions(-)
---
diff --git a/meson_post_install.py b/meson_post_install.py
index 0df4692..a814cdf 100644
--- a/meson_post_install.py
+++ b/meson_post_install.py
@@ -2,13 +2,21 @@
 
 import os
 import subprocess
-import sys
 
 if not os.environ.get('DESTDIR'):
-  icondir = os.path.join(sys.argv[1], 'icons', 'hicolor')
-  print('Update icon cache...')
-  subprocess.call(['gtk-update-icon-cache', '-f', '-t', icondir])
+  prefix = os.environ.get('MESON_INSTALL_PREFIX', '/usr/local')
+  datadir = os.path.join(prefix, 'share')
 
-  schemadir = os.path.join(sys.argv[1], 'glib-2.0', 'schemas')
-  print('Compiling gsettings schemas...')
-  subprocess.call(['glib-compile-schemas', schemadir])
+  print('Updating icon cache...')
+  icon_cache_dir = os.path.join(datadir, 'icons', 'hicolor')
+  if not os.path.exists(icon_cache_dir):
+    os.makedirs(icon_cache_dir)
+  subprocess.call(['gtk-update-icon-cache',
+                   '--quiet', '--force', '--ignore-theme-index',
+                   icon_cache_dir])
+
+  print('Compiling GSettings schemas...')
+  schemas_dir = os.path.join(datadir, 'glib-2.0', 'schemas')
+  if not os.path.exists(schemas_dir):
+    os.makedirs(schemas_dir)
+  subprocess.call(['glib-compile-schemas', schemas_dir])