radiobert: update and adopt heliwatch

flake.lock

@@ -8,11 +8,11 @@
         "utils": "utils"
       },
       "locked": {
-        "lastModified": 1636416807,
-        "narHash": "sha256-cKVugZtEszVAz6+emfCgl4CdIzVcqP1CcfVCvpMdS5g=",
+        "lastModified": 1636472542,
+        "narHash": "sha256-HlzWJXlcgzGQRFkv1q/Bi2aWlHlpmEYiOjaz5LKJAgo=",
         "ref": "master",
-        "rev": "3455a8d579aa67423adbc85abddab7c4d95e4eb8",
-        "revCount": 27,
+        "rev": "4e3504259a46bc586296bf15ffb9c72ffedf9b28",
+        "revCount": 34,
         "type": "git",
         "url": "https://gitea.c3d2.de/astro/heliwatch.git"
       },

flake.nix

@@ -222,6 +222,7 @@
         radiobert = nixosSystem' {
           modules = [
             "${inputs.nixpkgs}/nixos/modules/installer/sd-card/sd-image-aarch64.nix"
+            { nixpkgs.overlays = [ heliwatch.overlay ]; }
             ./hosts/radiobert
           ];
           system = "aarch64-linux";

hosts/radiobert/readsb.nix

@@ -38,7 +38,7 @@ in {
     wantedBy = [ "multi-user.target" ];
     requires = [ "readsb.service" ];
     serviceConfig = {
-      ExecStart = "${pkgs.ruby}/bin/ruby ${./sbs2json.rb}";
+      ExecStart = "${pkgs.heliwatch.http-json}/bin/http-json";
       User = "sbs2json";
       Group = "adsb";
       ProtectSystem = "full";
@@ -66,6 +66,10 @@ in {
     };
   };
 
+  services.collectd.plugins.exec = ''
+    Exec "${config.services.collectd.user}" "${pkgs.heliwatch.collectd-stats}/bin/collectd-stats"
+  '';
+
   environment.systemPackages = with pkgs; [
     dump1090_sdrplus
     readsb