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home-manager/modules/services/xscreensaver.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

61 lines
1.4 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.xscreensaver;
in {
meta.maintainers = [ maintainers.rycee ];
options = {
services.xscreensaver = {
enable = mkEnableOption "XScreenSaver";
settings = mkOption {
type = with types; attrsOf (either bool (either int str));
default = { };
example = {
mode = "blank";
lock = false;
fadeTicks = 20;
};
description = ''
The settings to use for XScreenSaver.
'';
};
};
};
config = mkIf cfg.enable {
assertions = [
(lib.hm.assertions.assertPlatform "services.xscreensaver" pkgs
lib.platforms.linux)
];
# To make the xscreensaver-command tool available.
home.packages = [ pkgs.xscreensaver ];
xresources.properties =
mapAttrs' (n: nameValuePair "xscreensaver.${n}") cfg.settings;
systemd.user.services.xscreensaver = {
Unit = {
Description = "XScreenSaver";
After = [ "graphical-session-pre.target" ];
PartOf = [ "graphical-session.target" ];
# Make sure the service is restarted if the settings change.
X-Restart-Triggers =
[ (builtins.hashString "md5" (builtins.toJSON cfg.settings)) ];
};
Service = {
ExecStart = "${pkgs.xscreensaver}/bin/xscreensaver -no-splash";
};
Install = { WantedBy = [ "graphical-session.target" ]; };
};
};
}