Add module

flake.nix

@@ -37,6 +37,69 @@
       default = self.apps.x86_64-linux.solid-xmpp-alarm;
     };
 
+    nixosModules = {
+      solid-xmpp-alarm = { config, lib, pkgs, ... }:
+      with lib;
+
+      let
+        cfg = config.services.solid-xmpp-alarm;
+      in {
+        options = {
+          services.solid-xmpp-alarm = {
+            enable = mkEnableOption "Prometheus Alertmanager webhook receiver for XMPP clients";
+            jid = mkOption {
+              type = types.str;
+              description = ''
+                XMPP account name of the sender.
+              '';
+            };
+            passwordFile = mkOption {
+              type = types.path;
+              description = ''
+                Path to file containing the password to log into the senders account.
+              '';
+            };
+            receiver = mkOption {
+              type = types.str;
+              description = ''
+                XMPP account name of the receiver.
+              '';
+            };
+            package = mkOption {
+              type = types.package;
+              default = self.packages.${config.nixpkgs.system}.solid-xmpp-alarm;
+              description = ''
+                Specify a custom solid-xmpp-alarm package. By default use the one shipped with this flake.
+              '';
+            };
+          };
+        };
+        config = mkIf cfg.enable {
+          users.users."solid-xmpp-alarm" = {
+            isSystemUser = true;
+            group = "solid-xmpp-alarm";
+          };
+          users.groups."solid-xmpp-alarm" = {};
+
+          systemd.services."solid-xmpp-alarm" = {
+            wantedBy = [ "multi-user.target" ];
+            after = [ "network.target" ];
+            serviceConfig = {
+              Restart = "always";
+              PrivateTmp = true;
+              WorkingDirectory = "/tmp";
+              RuntimeDirectory = "solid-xmpp-alarm";
+              User = "solid-xmpp-alarm";
+              Group = "solid-xmpp-alarm";
+              ExecStart = ''
+                ${cfg.package}/bin/solid-xmpp-alarm --jid ${cfg.jid} --password-file ${cfg.passwordFile} --receiver ${cfg.receiver}
+              '';
+            };
+          };
+        };
+      };
+    };
+
     hydraJobs = {
       inherit (self)
         packages;