nixos/woodpecker-agents: per-agent 'enable' option

nixos/doc/manual/release-notes/rl-2305.section.md

@@ -71,7 +71,7 @@ In addition to numerous new and upgraded packages, this release has the followin
 
 - [nimdow](https://github.com/avahe-kellenberger/nimdow), a window manager written in Nim, inspired by dwm.
 
-- [woodpecker-agents](https://woodpecker-ci.org/), a simple CI engine with great extensibility. Available as [services.woodpecker-agents](#opt-services.woodpecker-agents.enable).
+- [woodpecker-agents](https://woodpecker-ci.org/), a simple CI engine with great extensibility. Available as [services.woodpecker-agents](#opt-services.woodpecker-agents.agents._name_.enable).
 
 - [woodpecker-server](https://woodpecker-ci.org/), a simple CI engine with great extensibility. Available as [services.woodpecker-server](#opt-services.woodpecker-server.enable).
 

nixos/modules/services/continuous-integration/woodpecker/agents.nix

@@ -9,6 +9,8 @@ let
 
   agentModule = lib.types.submodule {
     options = {
+      enable = lib.mkEnableOption (lib.mdDoc "this Woodpecker-Agent. Agents execute tasks generated by a Server, every install will need one server and at least one agent");
+
       package = lib.mkPackageOptionMD pkgs "woodpecker-agent" { };
 
       environment = lib.mkOption {
@@ -101,8 +103,6 @@ in
 
   options = {
     services.woodpecker-agents = {
-      enable = lib.mkEnableOption (lib.mdDoc "the Woodpecker-Agent, Agents execute tasks generated by a Server, every install will need one server and at least one agent");
-
       agents = lib.mkOption {
         default = { };
         type = lib.types.attrsOf agentModule;
@@ -133,7 +133,12 @@ in
     };
   };
 
-  config = lib.mkIf cfg.enable {
-    systemd.services = lib.mapAttrs' mkAgentService cfg.agents;
+  config = {
+    systemd.services =
+      let
+        mkServices = lib.mapAttrs' mkAgentService;
+        enabledAgents = lib.filterAttrs (_: agent: agent.enable) cfg.agents;
+      in
+      mkServices enabledAgents;
   };
 }