[gnome-tweak-tool] gtksettings: Create config directories as necessary

[Florian Müllner <fmuellner src gnome org>]

commit 7bdcf1298ca9ef3bdddae77bc84e875293192708
Author: Florian Müllner <fmuellner gnome org>
Date:   Thu Jun 1 00:24:57 2017 +0200

    gtksettings: Create config directories as necessary
    
    Writing the .ini file currently fails if its config directory didn't
    exist previously. At least for the gtk-4.0 case that's not entirely
    unlikely, so try to create it if necessary.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=783304

 gtweak/gtksettings.py |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)
---
diff --git a/gtweak/gtksettings.py b/gtweak/gtksettings.py
index 8d10f2e..b869233 100644
--- a/gtweak/gtksettings.py
+++ b/gtweak/gtksettings.py
@@ -16,6 +16,7 @@
 # along with gnome-tweak-tool.  If not, see <http://www.gnu.org/licenses/>.
 
 import os.path
+import errno
 import logging
 
 from gi.repository import GLib
@@ -55,6 +56,14 @@ class GtkSettingsManager:
         keyfile.set_integer(SETTINGS_GROUP_NAME, key, value)
 
         try:
+            os.makedirs(os.path.dirname(self._path))
+        except OSError, e:
+            if e.errno is not errno.EEXIST:
+                raise
+        except:
+            raise
+
+        try:
             data = keyfile.to_data()
             GLib.file_set_contents(self._path, data[0])
         except: