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- Charge limit: udev GROUP=users on threshold; menu applies sysfs live and persists state; boot/AC oneshot prefers live theme-state.json. - Look & Feel: Reset wallpaper (auto); Theme/next/night light already there. - NVIDIA first-class wrappers deferred past v1 (keep #59 comments). - Identity taste: white, lumon, hackerman, matte-black, miasma. - Hand btop.theme for identity + boreal/executive-slate/neon-glass. Verified: V0 contrast; V1 battery-charge-limit VM. V3 live sysfs on laptop.
91 lines
4.1 KiB
Nix
91 lines
4.1 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, pkgs, ... }:
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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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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).
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#
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# Instant menu path (user decision 2026-07-10): the threshold node is
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# group-writable for `users` so nomarchy-menu can echo live without
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# rebuild; this oneshot still owns boot + AC-replug re-apply. Prefer
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# live theme-state.json under /home/*/.nomarchy so a menu change
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# survives reboot before the next sys-rebuild bakes the Nix option.
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systemd.services.nomarchy-battery-charge-limit = lib.mkIf cfg.laptop {
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description = "Apply battery charge end threshold from state or config";
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wantedBy = [ "multi-user.target" ];
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path = [ pkgs.jq pkgs.coreutils ];
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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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set -euo pipefail
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# Baked generation default (empty = full charge / no cap).
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limit=${if cfg.batteryChargeLimit != null then toString cfg.batteryChargeLimit else ""}
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# Prefer the newest live state write (menu path, no rebuild yet).
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for st in /home/*/.nomarchy/theme-state.json; do
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[ -r "$st" ] || continue
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v=$(jq -r '.settings.power.batteryChargeLimit // empty' "$st" 2>/dev/null || true)
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case "$v" in
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""|null|Null) ;;
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*[!0-9]*) ;;
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*) limit=$v ;;
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esac
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done
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[ -n "$limit" ] || limit=100
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# Name-agnostic system batteries (BACKLOG #60).
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for d in /sys/class/power_supply/*/; do
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[ "$(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 "$thresh" ] && echo "$limit" > "$thresh" || true
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done
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exit 0
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'';
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};
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# Writable threshold for the logged-in user (menu live apply) + AC
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# re-apply of the oneshot. Laptop only; no-op when the attr is absent.
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services.udev.extraRules = lib.mkIf cfg.laptop ''
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SUBSYSTEM=="power_supply", ATTR{type}=="Battery", TEST=="charge_control_end_threshold", GROUP="users", MODE="0664"
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SUBSYSTEM=="power_supply", ATTR{type}=="Mains", RUN+="${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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