feat(sway): add sway configuration

home/sway/nixos.nix

@@ -0,0 +1,23 @@
+{ pkgs
+, lib
+, config
+, ... }: with lib; let
+  gui = with config.faucet.gui; ( enable && session );
+in mkIf gui {
+  services.xserver.displayManager.sessionPackages = [
+    (pkgs.writeTextFile {
+      name = "sway-session";
+      destination = "/share/wayland-sessions/sway.desktop";
+      text = ''
+        [Desktop Entry]
+        Name=Sway
+        Comment=An i3-compatible Wayland compositor
+        Exec=sway --unsupported-gpu
+        Type=Application
+      '';
+    } // { providedSessions = [ pkgs.sway.meta.mainProgram ]; })
+  ];
+
+  security.pam.services.swaylock = { };
+  programs.light.enable = true;
+}