slippi-nix

This project is a Flake which exposes NixOS modules for ensuring your GameCube controller adapter is performing as well is it can be and Home Manager modules for installing and configuring the Slippi Launcher using NixOS-compatible versions of both the playback and netplay builds of Dolphin (Ishiiruka).

NOTE: At this time, this Flake only supports the x86_64-linux system (since it consumes AppImages that support the same). If you are using Linux on another CPU architecture, please reach out! If you are using macOS, install the launcher from https://slippi.gg/downloads directly; I don't recommend using Nix to manage your Slippi installation in that case.

Usage

The simplest usage is to simply run the netplay package in this Flake:

nix run github:lytedev/slippi-nix#slippi-netplay

However, for the optimal experience, you will want to ensure the host has the necessary configuration to handle a GameCube controller adapter. Additionally, you likely want to make use of the Slippi Launcher for managing and viewing your replays.

In your flake, you may optionally import the NixOS module for the overclocked adapter and you must import the Home Manager module for the Slippi Launcher. You will also need to specify where your Melee ISO is. Here is an example:

{
  inputs.slippi.url = "github:lytedev/slippi-nix";
  inputs.nixpkgs.url = "...";

  outputs = {slippi, nixpkgs, ...}: {
    nixosConfigurations = nixpkgs.lib.nixosSystem {
      system = "...";
      modules = [
        slippi.nixosModules.default
        {
          home-manager = {
            # ... snip -- see Home Manager's documentation for details
            users.YOUR_USERNAME = {
              imports = with outputs.homeManagerModules; [
                slippi.homeManagerModules.default
                {
                  # use your path
                  slippi-launcher.isoPath = "/home/user/Downloads/melee.iso";
                }
              ];
            };
          };
        }
      ];
    };
  };
}

There are other configuration options if you take a look at the flake's source. Most useful to me is:

slippi-launcher.launchMeleeOnPlay = false;

As I prefer to be able to tweak Dolphin's settings before diving right in.

Updates

Note that this does not support the auto-updates performed by Slippi Launcher. Instead, when updates are pushed here, you must update your input reference to this flake and then your system.

nix flake lock --update-input slippi-nix # use whatever name you gave this flake as input!
sudo nixos-rebuild switch --flake .

In the event that this repo is out-of-date and an update was newly pushed out and you do not want to wait, or you prefer to be in control, this Flake exposes extra configuration fields for specifying the version of the AppImage you want along with the hash like so:

{
  home-manager.users.YOUR_USERNAME = {
    slippi-launcher.netplayVersion = "3.4.0";
    slippi-launcher.netplayHash = "sha256-d1iawMsMwFElUqFmwWAD9rNsDdQr2LKscU8xuJPvxYg=";
    slippi-launcher.netplayBetaVersion = "4.0.0-mainline-beta.6";
    slippi-launcher.netplayBetaHash = "sha256-CicAZ28+yiagG3bjosu02azV6XzP7+JnLhUJ3hdeQbI=";
    slippi-launcher.playbackVersion = "3.4.0";
    slippi-launcher.playbackHash = "sha256-d1iawMsMwFElUqFmwWAD9rNsDdQr2LKscU8xuJPvxYg=";
  };
}

So when a Slippi update is released, you can usually bump the version to match and update the hash with whatever nix says it is.

Beta

You can enable the beta netplay client by adding this to the configuration:

{
  home-manager.users.YOUR_USERNAME = {
    slippi-launcher.useBetaNetplay = true;
  };
}

The beta netplay client is not downloaded unless it is enabled. When enabled it is set as the default as well.

Cache

You may also want to leverage our Cachix binary cache. There isn't much purpose to it since the "build" steps are just unpacking the AppImages and repacking them in a format that works with Nix, but they graciously provide one to us freely.

nixConfig = {
  extra-substituters = ["https://slippi-nix.cachix.org"];
  extra-trusted-public-keys = ["slippi-nix.cachix.org-1:2qnPHiOxTRpzgLEtx6K4kXq/ySDg7zHEJ58J6xNDvBo="];
};

To Do

It would be nice if Home Manager weren't strictly necessary. At the moment, I believe the config file could be created via a NixOS module (using systemd.tmpfiles.rules or something?), but the ideal scenario would be to instead either be to specify to the launcher where the netplay and playback binaries are without the configuration file -- perhaps via command line arguments or environment variables.

If this were true, you could simply nix run github:lytedev/slippi-nix#netplay and start playing right away, which is ideal!

License

This project is licensed under the MIT license.