lambdabot: add nixos service

nixos/modules/misc/ids.nix

@@ -216,6 +216,7 @@
       rdnssd = 188;
       ihaskell = 189;
       i2p = 190;
+      lambdabot = 191;
 
       # When adding a uid, make sure it doesn't match an existing gid. And don't use uids above 399!
 
@@ -409,6 +410,7 @@
       #rdnssd = 188; # unused
       ihaskell = 189;
       i2p = 190;
+      lambdabot = 191;
 
       # When adding a gid, make sure it doesn't match an existing
       # uid. Users and groups with the same name should have equal

nixos/modules/module-list.nix

@@ -273,6 +273,7 @@
   ./services/networking/iodined.nix
   ./services/networking/ircd-hybrid/default.nix
   ./services/networking/kippo.nix
+  ./services/networking/lambdabot.nix
   ./services/networking/mailpile.nix
   ./services/networking/minidlna.nix
   ./services/networking/mstpd.nix

nixos/modules/services/networking/lambdabot.nix

@@ -0,0 +1,72 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+
+  cfg = config.services.lambdabot;
+
+  rc = builtins.toFile "script.rc" cfg.script;
+
+in
+
+{
+
+  ### configuration
+
+  options = {
+
+    services.lambdabot = {
+
+      enable = mkOption {
+        type = types.bool;
+        default = false;
+        description = "Enable the Lambdabot IRC bot";
+      };
+
+      package = mkOption {
+        type = types.package;
+        default = pkgs.lambdabot;
+        description = "Used lambdabot package";
+      };
+
+      script = mkOption {
+        type = types.str;
+        default = "";
+        description = "Lambdabot script";
+      };
+
+    };
+
+  };
+
+  ### implementation
+
+  config = mkIf cfg.enable {
+
+    systemd.services.lambdabot = {
+      description = "Lambdabot daemon";
+      after = [ "network.target" ];
+      wantedBy = [ "multi-user.target" ];
+      # Workaround for https://github.com/lambdabot/lambdabot/issues/117
+      script = ''
+        mkdir -p ~/.lambdabot
+        cd ~/.lambdabot
+        exec ${cfg.package}/bin/lambdabot -e 'rc ${rc}'
+      '';
+      serviceConfig.User = "lambdabot";
+    };
+
+    users.extraUsers.lambdabot = {
+      group = "lambdabot";
+      description = "Lambdabot daemon user";
+      home = "/var/lib/lambdabot";
+      createHome = true;
+      uid = config.ids.uids.lambdabot;
+    };
+
+    users.extraGroups.lambdabot.gid = config.ids.gids.lambdabot;
+
+  };
+
+}