ibus: add installed tests

nixos/tests/installed-tests/default.nix

@@ -88,6 +88,7 @@ in
   glib-networking = callInstalledTest ./glib-networking.nix {};
   gnome-photos = callInstalledTest ./gnome-photos.nix {};
   graphene = callInstalledTest ./graphene.nix {};
+  ibus = callInstalledTest ./ibus.nix {};
   libgdata = callInstalledTest ./libgdata.nix {};
   libxmlb = callInstalledTest ./libxmlb.nix {};
   ostree = callInstalledTest ./ostree.nix {};

nixos/tests/installed-tests/ibus.nix

@@ -0,0 +1,20 @@
+{ pkgs, makeInstalledTest, ... }:
+
+makeInstalledTest {
+  tested = pkgs.ibus;
+
+  testConfig = {
+    i18n.inputMethod.enabled = "ibus";
+  };
+
+  preTestScript = ''
+    # ibus has ibus-desktop-testing-runner but it tries to manage desktop session so we just spawn ibus-daemon ourselves
+    machine.succeed("ibus-daemon --daemonize --verbose")
+  '';
+
+  withX11 = true;
+
+  # TODO: ibus-daemon is currently crashing or something
+  # maybe make ibus systemd service that auto-restarts?
+  meta.broken = true;
+}