nix-config/home/wm/screen-lock/default.nix

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{ config, lib, pkgs, ... }:
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let
cfg = config.my.home.wm.screen-lock;
notficationCmd =
let
duration = toString (cfg.notify.delay * 1000);
notifyCmd = "${lib.getExe pkgs.libnotify} -u critical -t ${duration}";
in
# Needs to be surrounded by quotes for systemd to launch it correctly
''"${notifyCmd} -- 'Locking in ${toString cfg.notify.delay} seconds'"'';
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in
{
config = lib.mkIf cfg.enable {
assertions = [
{
assertion =
let
inherit (cfg) cornerLock notify;
bothEnabled = cornerLock.enable && notify.enable;
cornerLockHigherThanNotify = cornerLock.delay >= notify.delay;
in
bothEnabled -> cornerLockHigherThanNotify;
message = ''
`config.my.home.wm.notify.delay` cannot have a value higher than
`config.my.home.wm.cornerLock.delay`.
'';
}
];
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services.screen-locker = {
enable = true;
inactiveInterval = cfg.timeout;
lockCmd = cfg.command;
xautolock = {
extraOptions = lib.optionals cfg.cornerLock.enable [
# Mouse corners: instant lock on upper-left, never lock on lower-right
"-cornerdelay"
"${toString cfg.cornerLock.delay}"
"-cornerredelay"
"${toString cfg.cornerLock.delay}"
"-corners"
"+00-"
] ++ lib.optionals cfg.notify.enable [
"-notify"
"${toString cfg.notify.delay}"
"-notifier"
notficationCmd
];
};
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};
};
}