nwg-drawer

modules/applications/nwg-drawer/home.nix

@@ -0,0 +1,28 @@
+{ lib, pkgs, ... }:
+let
+  nwgDrawer = lib.getExe pkgs.nwg-drawer;
+in
+{
+  home.packages = [ pkgs.nwg-drawer ];
+
+  # Keep the application grid resident so touchpad gestures can show it
+  # immediately instead of rebuilding the desktop-entry cache each time.
+  systemd.user.services.nwg-drawer = {
+    Unit = {
+      Description = "Resident nwg-drawer application grid";
+      Documentation = [ "https://github.com/nwg-piotr/nwg-drawer" ];
+      PartOf = [ "graphical-session.target" ];
+      After = [ "graphical-session.target" ];
+    };
+
+    Service = {
+      # Use niri's spawn action when available; nwg-drawer falls back to a
+      # direct launch under labwc.
+      ExecStart = "${nwgDrawer} -r -ovl -wm niri -closebtn right -fm nautilus -term ghostty";
+      Restart = "on-failure";
+      RestartSec = 2;
+    };
+
+    Install.WantedBy = [ "graphical-session.target" ];
+  };
+}

modules/applications/nwg-drawer/meta.nix

@@ -0,0 +1,3 @@
+{
+  description = "Full-screen Wayland application drawer";
+}

modules/profiles/interface/linux-desktop/meta.nix

@@ -8,6 +8,7 @@
     "applications.gtk"
     "applications.nautilus"
     "hardwares.graphics"
+    "services.fusuma"
     "systems.audio"
     "systems.fonts"
   ];

modules/services/fusuma/home.nix

@@ -0,0 +1,44 @@
+{ lib, pkgs, ... }:
+let
+  fusuma = lib.getExe pkgs.fusuma;
+  nwgDrawer = lib.getExe pkgs.nwg-drawer;
+in
+{
+  home.packages = [ pkgs.fusuma ];
+
+  xdg.configFile."fusuma/config.yml".text = ''
+    pinch:
+      4:
+        in:
+          command: "${nwgDrawer} -open"
+        out:
+          command: "${nwgDrawer} -close"
+
+    threshold:
+      pinch: 0.5
+
+    interval:
+      pinch: 0.5
+  '';
+
+  systemd.user.services.fusuma = {
+    Unit = {
+      Description = "Fusuma multitouch gesture recognizer";
+      Documentation = [ "https://github.com/iberianpig/fusuma" ];
+      Requires = [ "nwg-drawer.service" ];
+      PartOf = [ "graphical-session.target" ];
+      After = [
+        "graphical-session.target"
+        "nwg-drawer.service"
+      ];
+    };
+
+    Service = {
+      ExecStart = fusuma;
+      Restart = "on-failure";
+      RestartSec = 3;
+    };
+
+    Install.WantedBy = [ "graphical-session.target" ];
+  };
+}

modules/services/fusuma/meta.nix

@@ -0,0 +1,5 @@
+{
+  description = "Touchpad gesture recognition for Wayland sessions";
+
+  includes = [ "applications.nwg-drawer" ];
+}

modules/services/fusuma/nixos.nix

@@ -0,0 +1,5 @@
+{ primaryUser, ... }:
+{
+  # Fusuma reads raw touchpad events through libinput.
+  users.users.${primaryUser}.extraGroups = [ "input" ];
+}