Hide apps from the Ubuntu repos

meson_options.txt

@@ -5,3 +5,4 @@ option('name', type : 'string', value : 'AppCenter', description : 'The name of
 option('payments', type : 'boolean', value : true, description : 'Enable payment features and display paid apps')
 option('sharing', type : 'boolean', value : true, description : 'Display sharing features, i.e. copyable URLs to apps')
 option('api_url', type : 'string', value : 'https://developer.elementary.io/api', description : 'The base URL of the API to get app lists for the homepage banners')
+option('only_use_user_cache', type : 'boolean', value : true, description : 'Only use user cache and hide packages from system cache')

src/Core/PackageKitBackend.vala

@@ -151,6 +151,17 @@ public class AppCenterCore.PackageKitBackend : Backend, Object {
 
         package_list = new Gee.HashMap<string, AppCenterCore.Package> (null, null);
         appstream_pool = new AppStream.Pool ();
+
+#if ONLY_USE_USER_CACHE
+        // Only use a user cache, the system cache probably contains all the Ubuntu components
+        appstream_pool.set_cache_flags (AppStream.CacheFlags.USE_USER);
+
+        // Clear out the default set of metadata locations and only use the folder that gets populated
+        // with elementary's AppStream data.
+        appstream_pool.clear_metadata_locations ();
+        appstream_pool.add_metadata_location ("/usr/share/app-info");
+#endif
+
         // We don't want to show installed desktop files here
         appstream_pool.set_flags (appstream_pool.get_flags () & ~AppStream.PoolFlags.READ_DESKTOP_FILES);
 

src/meson.build

@@ -85,6 +85,10 @@ if get_option('sharing')
     args += '--define=SHARING'
 endif
 
+if get_option('only_use_user_cache')
+    args += '--define=ONLY_USE_USER_CACHE'
+endif
+
 executable(
     meson.project_name(),
     appcenter_files,