Add uStreamer service to skycam

hosts/skycam/default.nix

@@ -6,7 +6,10 @@
     ../server.nix
   ];
 
-  raspberry-pi-nix.board = "bcm2711";
+  raspberry-pi-nix = {
+    board = "bcm2711";
+    libcamera-overlay.enable = false;
+  };
 
   networking = {
     hostId = "731d1660";
@@ -25,9 +28,31 @@
 
   services.openssh.settings.PermitRootLogin = lib.mkForce "prohibit-password";
 
+  systemd.services.ustreamer = {
+    enable = true;
+    description = "uStreamer service";
+    unitConfig = {
+      Type = "simple";
+      ConditionPathExists = "/sys/bus/i2c/drivers/imx708/10-001a/video4linux";
+    };
+    serviceConfig = {
+      ExecStart = ''${pkgs.libcamera}/bin/libcamerify ${pkgs.unstable.ustreamer}/bin/ustreamer \
+        --host=0.0.0.0 \
+        --resolution=4608x2592
+      '';
+      DynamicUser = "yes";
+      SupplementaryGroups = [ "video" "i2c" ];
+      Restart = "always";
+      RestartSec = 10;
+    };
+    wantedBy = [ "network-online.target" ];
+    confinement.mode = "chroot-only";
+  };
+
   environment.systemPackages = with pkgs; [
     git
     neovim
+    libcamera
     libraspberrypi
     raspberrypi-eeprom
     v4l-utils