add waydroid

hosts/yodaTab/configuration.nix

@@ -50,6 +50,7 @@ in
       ../../modules/lid-switch-handling.nix
       ../../modules/sendmail-mta.nix
       ../../modules/journalwatch.nix
+      #../../modules/waydroid.nix
     ];
 
   networking.hostName = "yodaTab";

hosts/yodaTux/configuration.nix

@@ -50,6 +50,7 @@ in
       ../../modules/lid-switch-handling.nix
       ../../modules/sendmail-mta.nix
       ../../modules/journalwatch.nix
+      #../../modules/waydroid.nix
     ];
 
   networking.hostName = "yodaTux";

hosts/yodaYoga/configuration.nix

@@ -52,6 +52,7 @@ in
       ../../modules/lid-switch-handling.nix
       ../../modules/sendmail-mta.nix
       ../../modules/journalwatch.nix
+      #../../modules/waydroid.nix
     ];
 
   networking.hostName = "yodaYoga";

modules/waydroid.nix

@@ -0,0 +1,42 @@
+{ config, pkgs, ... }:
+
+{
+  # Installation and Usage. https://nixos.wiki/wiki/WayDroid
+  #
+  #   Installation:
+  #   Fetch WayDroid images.
+  #   You can add the parameters "-s GAPPS -f" to have GApps support.
+  #     sudo waydroid init
+  #
+  #   Usage:
+  #   Start the WayDroid LXC container
+  #     sudo systemctl start waydroid-container
+  #     sudo journalctl -b -u waydroid-container
+  #     #=> Started Waydroid Container.
+  #   Start WayDroid session
+  #   You'll know it is finished when you see the message "Android with user 0 is ready".
+  #     waydroid session start
+  #   Install and launch F-Droid
+  #     curl -L -o ~/Downloads/F-Droid.apk https://f-droid.org/F-Droid.apk
+  #     waydroid app install ~/Downloads/F-Droid.apk
+  #     waydroid app launch org.fdroid.fdroid
+  #   Stop WayDroid session
+  #     waydroid session stop
+  #   Stop the Waydroid LXC container
+  #     sudo systemctl stop waydroid-container
+
+  # TODO: Is WayDroid rooted? How to un-root it?
+  # https://github.com/waydroid/waydroid/issues/935
+
+  assertions = [{
+    assertion = config.services.xserver.displayManager.gdm.wayland;
+    message = "Waydroid requires Wayland.";
+  }];
+
+  virtualisation.waydroid.enable = true;
+
+  # Clipboard sharing. https://nixos.wiki/wiki/WayDroid#Clipboard_sharing
+  environment.systemPackages = with pkgs; [
+    wl-clipboard
+  ];
+}