Add hardcoded us,ru layout and Super+Space switch

src/input.rs

@@ -41,6 +41,8 @@ impl Niri {
                     time,
                     |_, mods, keysym| {
                         if event.state() == KeyState::Pressed {
+                            // FIXME: these don't work in the Russian layout. I guess I'll need to
+                            // find a US keymap, then map keys somehow.
                             match keysym.modified_sym() {
                                 keysyms::KEY_E if mods.logo => {
                                     FilterResult::Intercept(InputAction::Quit)

src/niri.rs

@@ -81,7 +81,12 @@ impl Niri {
 
         let mut seat: Seat<Self> = seat_state.new_wl_seat(&display_handle, seat_name);
         // FIXME: get Xkb and repeat interval from GNOME dconf.
-        seat.add_keyboard(XkbConfig::default(), 400, 30).unwrap();
+        let xkb = XkbConfig {
+            layout: "us,ru",
+            options: Some("grp:win_space_toggle".to_owned()),
+            ..Default::default()
+        };
+        seat.add_keyboard(xkb, 400, 30).unwrap();
         seat.add_pointer();
 
         let space = Space::default();