shell.nix

with import <nixpkgs> {
  overlays = [
    (self: super: rec {
      beam = super.beam // { defaultVersion = "erlangR25"; };
      elixir = super.elixir_1_14;
      elixir_ls = super.elixir_ls.override { elixir = elixir; };
    })
  ];
};

mkShell {
  buildInputs = [ elixir elixir_ls git flyctl ]
    ++ lib.optional stdenv.isDarwin terminal-notifier # For ExUnit Notifier on macOS.
    ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
      # For file_system on macOS.
      CoreFoundation
      CoreServices
    ]);

  ERL_AFLAGS = "-kernel shell_history enabled";
}