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

  outputs = {
    # self,
    nixpkgs,
    ...
  }: let
    # inherit (self) outputs;
    systems = [
      "aarch64-linux"
      "aarch64-darwin"
      "x86_64-darwin"
      "x86_64-linux"
    ];

    forAllSystems = nixpkgs.lib.genAttrs systems;

    nixpkgsFor = system: import nixpkgs {inherit system;};
  in {
    # packages = forAllSystems (system: let
    #   pkgs = nixpkgsFor system;

    #   inherit (pkgs) beamPackages;
    #   inherit (beamPackages) mixRelease fetchMixDeps;

    #   version = "0.1.0";
    #   src = ./.;
    #   pname = "api.lyte.dev";
    # in {
    #   # this-package = mixRelease {
    #   #   inherit pname version src;
    #   #   mixFodDeps = fetchMixDeps {
    #   #     inherit version src;
    #   #     pname = "mix-deps-${pname}";
    #   #     hash = pkgs.lib.fakeSha256;
    #   #   };
    #   #   buildInputs = with pkgs; [sqlite];
    #   #   HOME = "$(pwd)";
    #   #   MIX_XDG = "$HOME";
    #   # };

    #   # default = outputs.packages.${system}.this-package;
    # });

    devShells = forAllSystems (system: let
      pkgs = (nixpkgsFor system).extend (final: prev: {
        erlang = prev.beam.packages.erlang_26;
        elixir = final.erlang.elixir_1_16;
        elixir-ls = prev.elixir-ls.override {elixir = final.elixir;};
      });
    in {
      default = pkgs.mkShell {
        shellHook = "export LOCALE_ARCHIVE=/usr/lib/locale/locale-archive";
        buildInputs = with pkgs; [
          erlang.erlang
          elixir
          elixir-ls

          inotify-tools

          watchexec
        ];
      };
    });
  };
}