start: init start-hyprland and safe mode

[vaxerski]

This MR adds start-hyprland, a watchdog wrapper, and safe mode.

When launched with start-hyprland, if hyprland crashes after fully initializing (not a "gpu unsupported" type crash) watchdog will restart it in safe mode.

A warning notif will be sent if you are not launching via start-hyprland.

Safe mode:

• prevents loading config, loads default.
• pops up a dialog that allows you to load cfg, open crash report dir, or close it and continue troubleshooting.

Needs:

• New hyprlang release
• nix bump
• testing
• point desktop file at start
• guiutils release for hyprland-run

[alba4k]

A warning notif will be sent if you are not launching via start-hyprland.

can be disabled, right?

[vaxerski]

can be disabled, right?

No

[vaxerski]

you can now

[RoootTheFox]

honestly, I think you should be able to disable the warning, as some people might prefer to run hyprland without a watchdog (for whatever reason)

i suggest replacing the warning (if disabled) with a big post-crash message on stdout/stderr, telling the user to try safe mode using a cli flag, e.g.

Hyprland crashed, and you aren't using start-hyprland, so Hyprland wasn't automatically restarted in safe mode.
If you wish, you can do so manually by running Hyprland with the '--safe-mode' flag.

edit: whoops, missed you implementing that

[vaxerski]

I was thinking of adding an --x11 option for the lols but decided not to

[fxzzi]

Is there any possibility of having the wrapper start and stop a systemd target so we can launch stuff with graphical-session.target without uwsm

[vaxerski]

uhhh probably but why? its not meant for that

[fxzzi]

uhhh probably but why? its not meant for that

i guess its not meant for that but its great QOL which could help move people off of uwsm (as its no longer supported). the main reason i was using uwsm in the first place was because it would start graphical-session.target for me, allowing me to run systemd services as hyprland starts (hyprpaper, hyprsunset, hypridle, etc)

our bundled systemd services on those projects already start with graphical-session.target but this target is never triggered automatically for me (nixos, logging in through tty or tuigreet / greetd)

Instead I just manually write a hyprland-session.target file, and wrapped hyprland to run systemctl --user start and stop before and after hyprland. Whilst this does work it would be nice to have hyprland automatically do it