Add service module for timetagger

Signed-off-by: Matthias Beyer <mail@beyermatthias.de>

nixos/modules/services/web-apps/timetagger.nix

@@ -0,0 +1,77 @@
+{ config, lib, pkgs, ... }:
+
+let
+  inherit (lib) mkEnableOption mkIf mkOption types literalExpression;
+
+  cfg = config.services.timetagger;
+in {
+
+  options = {
+    services.timetagger = {
+      enable = mkEnableOption ''
+        Tag your time, get the insight
+
+        <note><para>
+          This app does not do authentication.
+          You must setup authentication yourself or run it in an environment where
+          only allowed users have access.
+        </para></note>
+      '';
+
+      bindAddr = mkOption {
+        description = "Address to bind to.";
+        type = types.str;
+        default = "127.0.0.1";
+      };
+
+      port = mkOption {
+        description = "Port to bind to.";
+        type = types.port;
+        default = 8080;
+      };
+
+      package = mkOption {
+        description = ''
+          Use own package for starting timetagger web application.
+
+          The ${literalExpression ''pkgs.timetagger''} package only provides a
+          "run.py" script for the actual package
+          ${literalExpression ''pkgs.python3Packages.timetagger''}.
+
+          If you want to provide a "run.py" script for starting timetagger
+          yourself, you can do so with this option.
+          If you do so, the 'bindAddr' and 'port' options are ignored.
+        '';
+
+        default = null;
+        type = types.package;
+      };
+    };
+  };
+
+  config = let
+    timetaggerPkg = if !isNull cfg.package then cfg.package else
+      pkgs.timetagger.overwriteAttrs {
+        addr = cfg.bindAddr;
+        port = cfg.port;
+      };
+
+  in mkIf cfg.enable {
+    systemd.services.timetagger = {
+      description = "Timetagger service";
+      wantedBy = [ "multi-user.target" ];
+
+      serviceConfig = {
+        User = "timetagger";
+        Group = "timetagger";
+        StateDirectory = "timetagger";
+
+        ExecStart = "${timetaggerPkg}/bin/timetagger";
+
+        Restart = "on-failure";
+        RestartSec = 1;
+      };
+    };
+  };
+}
+