Package zlaunch for Nix/NixOS users and create devshell

[ItzDerock]

Added a flake.nix and flake.lock to add support for Nix.

Nix/NixOS users can test out zlaunch by running:

nix shell github:zortax/zlaunch
# Will enter a shell with zlaunch
zlaunch & bg
zlaunch toggle

and it can be installed globally (impurely) via

nix profile add github:zortax/zlaunch

or installed declaratively by adding it to their system configuration.

There is also a devshell, so Nix users can easily enter an environment with cargo and all other dependencies already installed:

nix develop

[zortax]

It would be nice to be able to use the flake for development on non-nixos systems as well, but If I remember correctly that would require using nixGL. Do you think this would make sense to include? Or is it to annoying to do this in a way that doesn't brick usage for NixOS users?

[ItzDerock]

It would be nice to be able to use the flake for development on non-nixos systems as well, but If I remember correctly that would require using nixGL. Do you think this would make sense to include? Or is it to annoying to do this in a way that doesn't brick usage for NixOS users?

I'm not too familiar with NixGL, but imo it makes more sense for those who need it to provide it themselves. The non-nixos users who are using this flake can install nixGL to their system, and prefix their cargo/zlaunch command with nixGL: nixGL cargo run --release for example.

[zortax]

Should we instruct users to explicitly use the tag of the latest release version instead of this (which If I understand correctly will use latest commit on main)? I probably will not think about updating the hash on every commit...

[ItzDerock]

Yeah that's a good idea, good catch.

[zortax]

lgtm, thanks for the contribution