{
  description = "snowy: a Nix framework for developing Minecraft mods";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
  };

  outputs = { self, nixpkgs }:
    let
      systems = [ "x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin" ];
      forAllSystems = f: nixpkgs.lib.genAttrs systems (system: f system);
    in
    {
      lib.mkMod = { pkgs, lib ? pkgs.lib }: import ./lib/mkMod.nix { inherit pkgs lib; };

      devShells = forAllSystems (system:
        let
          pkgs = import nixpkgs { inherit system; };
          mkMod = self.lib.mkMod { inherit pkgs; };
        in
        {
          basicmod-neoforge-1_21_1 = mkMod {
            modPath = ./tests/fixtures/basicmod-neoforge-1.21.1/mod.nix;
          };
          silicon-neoforge-1_21_1 = mkMod {
            modPath = ./tests/fixtures/silicon-neoforge-1.21.1/mod.nix;
          };
        });
    };
}