Convert "acpid"

svn path=/nixos/branches/fix-style/; revision=14358

system/options.nix

@@ -2180,18 +2180,6 @@ in
   };
 
     
-  powerManagement = {
-    
-    enable = mkOption {
-      default = false;
-      description = "
-        Whether to enable power management.
-      ";
-    };
-
-  };
-  
-
   nesting = {
     children = mkOption {
       default = [];
@@ -2222,6 +2210,8 @@ in
     (import ../system/activate-configuration.nix)
     (import ../upstart-jobs/default.nix)
 
+    (import ../upstart-jobs/acpid.nix) # ACPI daemon
+
     # security
     (import ../system/sudo.nix)
 

upstart-jobs/acpid.nix

@@ -1,5 +1,22 @@
 {pkgs, config, ...}:
 
+###### interface
+let
+  inherit (pkgs.lib) mkOption mkIf;
+
+  options = {
+    powerManagement = {
+
+      enable = mkOption {
+        default = false;
+        description = "Whether to enable power management (ACPI daemon)";
+      };
+    };
+  };
+in
+
+###### implementation
+
 let
 
   acpiConfDir = pkgs.runCommand "acpi-events" {}
@@ -18,8 +35,6 @@ let
       }
     '';
   
-  events = [powerEvent lidEvent acEvent];
-
   # Called when the power button is pressed.
   powerEvent =
     { name = "power-button";
@@ -64,12 +79,18 @@ let
         '';
     };
 
+  events = [powerEvent lidEvent acEvent];
+
 in
 
-{
-  name = "acpid";
+mkIf config.powerManagement.enable {
+  require = [
+    options
+  ];
 
-  extraPath = [pkgs.acpid];
+  services = {
+    extraJobs = [{
+      name = "acpid";
 
       job = ''
         description "ACPI daemon"
@@ -79,5 +100,6 @@ in
 
         respawn ${pkgs.acpid}/sbin/acpid --foreground --confdir ${acpiConfDir}
       '';
-  
+    }];
+  };
 }