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home-manager/modules/services/cbatticon.nix
Robert Helgesson 5f433eb164
Move platform check into modules
Before, loading a module would be guarded by an optional platform
condition. This made it possible to avoid loading and evaluating a
module if it did not support the host platform.

Unfortunately, this made it impossible to share a single configuration
between GNU/Linux and Darwin hosts, which some wish to do.

This removes the conditional load and instead inserts host platform
assertions in the modules that are platform specific.

Fixes #1906
2021-07-18 20:43:22 +02:00

124 lines
3.4 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.cbatticon;
package = pkgs.cbatticon;
makeCommand = commandName: commandArg:
optional (commandArg != null)
(let cmd = pkgs.writeShellScript commandName commandArg;
in "--${commandName} ${cmd}");
commandLine = concatStringsSep " " ([ "${package}/bin/cbatticon" ]
++ makeCommand "command-critical-level" cfg.commandCriticalLevel
++ makeCommand "command-left-click" cfg.commandLeftClick
++ optional (cfg.iconType != null) "--icon-type ${cfg.iconType}"
++ optional (cfg.lowLevelPercent != null)
"--low-level ${toString cfg.lowLevelPercent}"
++ optional (cfg.criticalLevelPercent != null)
"--critical-level ${toString cfg.criticalLevelPercent}"
++ optional (cfg.updateIntervalSeconds != null)
"--update-interval ${toString cfg.updateIntervalSeconds}"
++ optional (cfg.hideNotification != null && cfg.hideNotification)
"--hide-notification");
in {
meta.maintainers = [ maintainers.pmiddend ];
options = {
services.cbatticon = {
enable = mkEnableOption "cbatticon";
commandCriticalLevel = mkOption {
type = types.nullOr types.lines;
default = null;
example = ''
notify-send "battery critical!"
'';
description = ''
Command to execute when the critical battery level is reached.
'';
};
commandLeftClick = mkOption {
type = types.nullOr types.lines;
default = null;
description = ''
Command to execute when left clicking on the tray icon.
'';
};
iconType = mkOption {
type =
types.nullOr (types.enum [ "standard" "notification" "symbolic" ]);
default = null;
example = "symbolic";
description = "Icon type to display in the system tray.";
};
lowLevelPercent = mkOption {
type = types.nullOr (types.ints.between 0 100);
default = null;
example = 20;
description = ''
Low level percentage of the battery in percent (without the
percent symbol).
'';
};
criticalLevelPercent = mkOption {
type = types.nullOr (types.ints.between 0 100);
default = null;
example = 5;
description = ''
Critical level percentage of the battery in percent (without
the percent symbol).
'';
};
updateIntervalSeconds = mkOption {
type = types.nullOr types.ints.positive;
default = null;
example = 5;
description = ''
Number of seconds between updates of the battery information.
'';
};
hideNotification = mkOption {
type = types.nullOr types.bool;
default = null;
description = "Hide the notification popups.";
};
};
};
config = mkIf cfg.enable {
assertions = [
(lib.hm.assertions.assertPlatform "services.cbatticon" pkgs
lib.platforms.linux)
];
home.packages = [ package ];
systemd.user.services.cbatticon = {
Unit = {
Description = "cbatticon system tray battery icon";
Requires = [ "tray.target" ];
After = [ "graphical-session-pre.target" "tray.target" ];
PartOf = [ "graphical-session.target" ];
};
Install = { WantedBy = [ "graphical-session.target" ]; };
Service = {
ExecStart = commandLine;
Restart = "on-abort";
};
};
};
}