* Run the ACPI daemon. This allows the system to respond to ACPI

events, like pressing the power button.  The NVIDIA X11 driver also
  needs it to respond to the internal/external monitor switch button
  on laptops.  The power actions should of course be made
  configurable.

svn path=/nixos/trunk/; revision=14027

upstart-jobs/acpid.nix

@@ -0,0 +1,42 @@
+{pkgs, config, ...}:
+
+let
+
+  acpiConfDir = pkgs.runCommand "acpi-events" {}
+    ''
+      ensureDir $out
+      ln -s ${acpiConfFile} $out/events.conf
+    '';
+
+  acpiConfFile = pkgs.writeText "acpi.conf"
+    ''
+      event=button/power.*
+      action=${powerEventHandler} "%e"
+    '';
+
+  # Called when the power button is pressed.
+  powerEventHandler = pkgs.writeScript "acpi-power.sh"
+    ''
+      #! ${pkgs.bash}/bin/sh
+      # Suspend to RAM.
+      #echo mem > /sys/power/state
+      exit 0
+    '';
+
+in
+
+{
+  name = "acpid";
+  
+  extraPath = [pkgs.acpid];
+  
+  job = ''
+    description "ACPI daemon"
+
+    start on udev
+    stop on shutdown
+
+    respawn ${pkgs.acpid}/sbin/acpid --foreground --confdir ${acpiConfDir}
+  '';
+  
+}

upstart-jobs/default.nix

@@ -342,6 +342,12 @@ let
       inherit (pkgs) alsaUtils;
     })
 
+  # ACPI daemon.
+  ++ optional true /* !!! need some option */
+    (import ../upstart-jobs/acpid.nix {
+      inherit config pkgs;
+    })
+
   # D-Bus system-wide daemon.
   ++ optional config.services.dbus.enable
     (import ../upstart-jobs/dbus.nix {