62 lines
1.2 KiB
Nix
62 lines
1.2 KiB
Nix
{pkgs, config, ...}:
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let
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acpiConfDir = pkgs.runCommand "acpi-events" {}
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''
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ensureDir $out
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ln -s ${acpiConfFile} $out/events.conf
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'';
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acpiConfFile = pkgs.writeText "acpi.conf"
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''
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event=button/power.*
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action=${powerEventHandler} "%e"
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event=button/lid.*
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action=${lidEventHandler} "%e"
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'';
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# Called when the power button is pressed.
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powerEventHandler = pkgs.writeScript "acpi-power.sh"
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''
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#! ${pkgs.bash}/bin/sh
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# Suspend to RAM.
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#echo mem > /sys/power/state
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exit 0
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'';
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# Called when the laptop lid is opened/closed.
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lidEventHandler = pkgs.writeScript "acpi-lid.sh"
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''
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#! ${pkgs.bash}/bin/sh
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# Suspend to RAM if the lid is closed. (We also get this event
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# when the lid just opened, in which case we obviously don't
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# want to suspend again.)
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if grep -q closed /proc/acpi/button/lid/LID/state; then
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sync
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echo mem > /sys/power/state
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fi
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exit 0
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'';
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in
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{
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name = "acpid";
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extraPath = [pkgs.acpid];
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job = ''
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description "ACPI daemon"
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start on udev
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stop on shutdown
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respawn ${pkgs.acpid}/sbin/acpid --foreground --confdir ${acpiConfDir}
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'';
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}
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