* Generate the acpid configuration properly: each config file

can only contain one event.

svn path=/nixos/trunk/; revision=14080

upstart-jobs/acpid.nix

@@ -5,54 +5,64 @@ let
   acpiConfDir = pkgs.runCommand "acpi-events" {}
     ''
       ensureDir $out
-      ln -s ${acpiConfFile} $out/events.conf
+      ${
+        # Generate a .conf file for each event. (You can't have
+        # multiple events in one config file...)
+        let f = event:
+          ''
+            fn=$out/${event.name}.conf
+            echo "event=${event.event}" > $fn
+            echo "action=${pkgs.writeScript "${event.name}.sh" event.action}" >> $fn
+          '';
+        in pkgs.lib.concatMapStrings f events
+      }
     '';
 
-  acpiConfFile = pkgs.writeText "acpi.conf"
-    ''
-      event=button/power.*
-      action=${powerEventHandler} "%e"
-
-      event=button/lid.*
-      action=${lidEventHandler} "%e"
-
-      event=ac_adapter.*
-      action=${acEventHandler} "%e"
-    '';
+  events = [powerEvent lidEvent acEvent];
 
   # 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
-    '';
+  powerEvent =
+    { name = "power-button";
+      event = "button/power.*";
+      action = 
+        ''
+          #! ${pkgs.bash}/bin/sh
+        '';
+    };
 
   # Called when the laptop lid is opened/closed.
-  lidEventHandler = pkgs.writeScript "acpi-lid.sh"
-    ''
-      #! ${pkgs.bash}/bin/sh
+  lidEvent = 
+    { name = "lid";
+      event = "button/lid.*";
+      action =
+        ''
+          #! ${pkgs.bash}/bin/sh
 
-      # Suspend to RAM if the lid is closed.  (We also get this event
-      # when the lid just opened, in which case we obviously don't
-      # want to suspend again.) 
-      if grep -q closed /proc/acpi/button/lid/LID/state; then
-          sync
-          echo mem > /sys/power/state
-      fi
-    '';
+          # Suspend to RAM if the lid is closed.  (We also get this event
+          # when the lid just opened, in which case we obviously don't
+          # want to suspend again.) 
+          if grep -q closed /proc/acpi/button/lid/LID/state; then
+              sync
+              echo mem > /sys/power/state
+          fi
+        '';
+    };
 
   # Called when the AC power is connected or disconnected.
-  acEventHandler = pkgs.writeScript "ac-power.sh"
-    ''
-      #! ${pkgs.bash}/bin/sh
+  acEvent =
+    { name = "ac-power";
+      event = "ac_adapter.*";
+      action = 
+        ''
+          #! ${pkgs.bash}/bin/sh
 
-      if grep -q "state:.*on-line" /proc/acpi/ac_adapter/AC/state; then
-         echo performance > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
-      elif grep -q "state:.*off-line" /proc/acpi/ac_adapter/AC/state; then
-         echo ondemand > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
-      fi
-    '';
+          if grep -q "state:.*on-line" /proc/acpi/ac_adapter/AC/state; then
+             echo performance > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
+          elif grep -q "state:.*off-line" /proc/acpi/ac_adapter/AC/state; then
+             echo ondemand > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
+          fi
+        '';
+    };
 
 in