1diff --git a/gio/gsettingsschema.c b/gio/gsettingsschema.c
2index b1918657d..504ff97c4 100644
3--- a/gio/gsettingsschema.c
4+++ b/gio/gsettingsschema.c
5@@ -356,6 +356,9 @@ initialise_schema_sources (void)
6
7 try_prepend_data_dir (g_get_user_data_dir ());
8
9+ if (!is_setuid && (path = g_getenv ("NIX_GSETTINGS_OVERRIDES_DIR")) != NULL)
10+ try_prepend_dir (path);
11+
12 /* Disallow loading extra schemas if running as setuid, as that could
13 * allow reading privileged files. */
14 if (!is_setuid && (path = g_getenv ("GSETTINGS_SCHEMA_DIR")) != NULL)