{
  inputs = {
    nixpkgs.url = "https://channels.nixos.org/nixpkgs-unstable/nixexprs.tar.zst";
#     rastertype3.url = "git+https://rastertail.net/scm/rastertype3.git";
  };

  outputs =
    { self
    , nixpkgs
#     , rastertype3
    }: let
      system = "aarch64-darwin";
      pkgs = import nixpkgs {
        inherit system;
#         overlays = [ rastertype3.overlays.default ];
      };
  in {
    devShells.${system}.default = let
    in pkgs.mkShell {
      packages =
        [ pkgs.zig pkgs.zls
#           pkgs.rastertype3
        ];
    };
  };
}