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Replace BAT* globs with type=Battery + !scope=Device (same filter as nomarchy-battery-notify) in charge-limit oneshot, menu gates, Waybar power-profile self-gate, doctor, and install chassis detection. CMB0- style names get charge-cap and laptop modules consistently. V3 pending: confirm on non-BAT* hardware (HARDWARE-QUEUE). Close #60. Verified: V1 (option-docs, hardware-db-modules, battery-charge-limit VM).
77 lines
3.5 KiB
Nix
77 lines
3.5 KiB
Nix
# Active power management. One concern, one file: this is the system
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# side — the power daemon (power-profiles-daemon by default, or TLP),
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# thermald, and the battery charge limit. The profile *switcher* and the
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# Waybar *indicator* live home-side (rofi.nix / waybar.nix); they self-
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# gate on powerprofilesctl being present, so there's no system→home wiring
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# to keep in sync (the same way the Waybar battery widget auto-hides on
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# desktops). See the roadmap in README.md.
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{ config, lib, ... }:
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let
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cfg = config.nomarchy.system.power;
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ppd = cfg.backend == "ppd";
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tlp = cfg.backend == "tlp";
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chargeLimit = cfg.laptop && cfg.batteryChargeLimit != null;
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in
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{
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config = lib.mkIf cfg.enable {
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# PPD and TLP both drive CPU/platform power — running both fights.
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# `backend` selects exactly one; this assertion only fires if a
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# downstream force-enables the other service directly.
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assertions = [{
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assertion = !(config.services.power-profiles-daemon.enable
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&& config.services.tlp.enable);
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message = ''
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nomarchy: power-profiles-daemon and TLP are mutually exclusive.
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Pick one with nomarchy.system.power.backend ("ppd" or "tlp").
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'';
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}];
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# Unprivileged profile switching (the menu/Waybar) goes through
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# polkit, already enabled distro-wide in default.nix.
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services.power-profiles-daemon.enable = lib.mkDefault ppd;
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services.tlp.enable = lib.mkDefault tlp;
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# thermald is Intel-only, so off unless asked (the installer enables
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# it on a GenuineIntel CPU). Sits happily next to either backend.
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services.thermald.enable = lib.mkDefault cfg.thermal.enable;
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# Battery charge limit via sysfs. PPD can't cap charge at all, and
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# TLP's own knob only applies under TLP — so a tiny oneshot writes
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# the threshold directly, independent of the backend. Re-applied on
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# AC state changes by the udev rule below (some firmwares reset the
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# threshold when the charger is unplugged). `[ -w ]` skips paths that
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# don't exist, so this is a clean no-op on hardware without the control.
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systemd.services.nomarchy-battery-charge-limit = lib.mkIf chargeLimit {
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description = "Cap battery charging at ${toString cfg.batteryChargeLimit}%";
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wantedBy = [ "multi-user.target" ];
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serviceConfig = {
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Type = "oneshot";
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RemainAfterExit = true;
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};
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script = ''
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# Name-agnostic (BAT0, CMB0, …): same type/scope filter as
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# nomarchy-battery-notify — BACKLOG #60.
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for d in /sys/class/power_supply/*/; do
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[ "$(cat "$d/type" 2>/dev/null)" = Battery ] || continue
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[ "$(cat "$d/scope" 2>/dev/null || echo System)" = Device ] && continue
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thresh="$d/charge_control_end_threshold"
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[ -w "$thresh" ] && echo ${toString cfg.batteryChargeLimit} > "$thresh"
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done
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exit 0
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'';
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};
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# Re-apply the threshold whenever the mains adapter changes state: the
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# boot oneshot above runs once, but some firmwares clear the limit when
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# the charger is unplugged, so it must be re-asserted on the event.
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# Matched by ATTR{type}=="Mains" (vendor-neutral — the kernel name
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# AC/AC0/ADP1/ACAD varies); --no-block so the RUN+= returns at once
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# (systemd kills long-running udev workers); restart (not try-restart)
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# so it re-applies even if the boot run was inactive.
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services.udev.extraRules = lib.mkIf chargeLimit ''
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SUBSYSTEM=="power_supply", ATTR{type}=="Mains", RUN+="${config.systemd.package}/bin/systemctl --no-block restart nomarchy-battery-charge-limit.service"
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'';
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};
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}
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