feat: automate wlsunset through Nix flake

[massivebird]

How do I launch a program as a daemon of sorts? I want wlsunset to launch (probably with customizable arguments) automatically on startup. Home manager would be nice just for this, especially since the configuration is done entirely from the command line.

[massivebird]

I found this Reddit post and came up with this:

    systemd.user.services.wlsunset-auto = {
      description = "wlsunset (automated via Nix flake)";
      script = ''
        # Location: somewhere in Detroit
        ${pkgs.wlsunset}/bin/wlsunset -o ":0" -l 42.33282278735832 -L -83.05300566614319
    '';
      wantedBy = [ "default.target" ]; # starts after user login
    };

This service fails to launch on boot. Restarting it with systemctl --user restart does make it active for the rest of the session tho.

I DO have a temporary solution in launching wlsunset through my Sway config, but I would really like to automate this through my flake.

[massivebird]

By the way, journalctl --user -u wlsunset-auto.service just says this:

-- Boot 0a56d13e9a614cd5ab2da6e0f650da65 --
Sep 16 15:22:12 ray systemd[1177]: Started Automatically runs wlsunset on startup..
Sep 16 15:22:12 ray systemd[1177]: wlsunset-auto.service: Main process exited, code=exited, status=1/FAILURE
Sep 16 15:22:12 ray systemd[1177]: wlsunset-auto.service: Failed with result 'exit-code'.

[massivebird]

By the way, I did manage to automate wlsunset through sway. A Nix solution would still be preferred, especially if it applies regardless of my window manager.