Autodetect NixOS and relaunch

[iczero]

Nix can start the Steam FHS environment with the additional required packages directly from nix-shell. Scripts can autodetect a NixOS environment and reexec, instead of requiring the user to manually specify packages.

The following was from lilijoyskyseeker on the FAF Discord.

SOLVED https://discord.com/channels/197033481883222026/1228471001633914950

Instead of running in the Ubuntu Distrobox, run it on NixOS with this:

1. Make sure Steam is installed this way in your configuration.nix

  # steam
  programs.steam = {
    enable = true;
  };

2. add

  # steam
  programs.steam = {
    enable = true;
# this here \/\/\/
    package = with pkgs; steam.override { extraPkgs = pkgs: [
    jq
    cabextract
    wget 
    ]; };
# this here /\/\/\
  };

3. rebuild your system
4. run the setup.sh with steam-run bash "<path-to-setup.sh>" (if you get spammed with a popup, just spam click OK)
5. follow the rest of the setup on the wiki substituting the command with being run with steam-run bash "<other-commands>"
6. Profit!
7. if you want you GUI to be able to launch the game after running install-shortcut.sh, find the .desktop file, mine was at ~/.local/share/application/com.faforever.faf-linux.desktop, and edit the Exec line to this: Exec=steam-run bash "<path-to-run>"
8. More profit!

many thanks again to <@261580158798921740>

maybe

nix-shell -p steam-run jq cabextract wget --run "steam-run bash '<command>'"