flake.nix

{
  inputs = {
    fenix = {
      url = "github:nix-community/fenix";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    devenv.url = "github:cachix/devenv";
  };

  outputs = { nixpkgs, flake-utils, fenix, ... }@inputs:
    flake-utils.lib.eachDefaultSystem (system:
      let
        pkgs = import nixpkgs { inherit system; };
      in
      {
        devShells.default =
          let
            beamPackages = pkgs.beam.packages.erlangR25;
            rustPackages = fenix.packages.${pkgs.system}.stable;
          in
          pkgs.mkShell
            {
              packages = with pkgs; [
                # Elixir
                beamPackages.erlang
                beamPackages.elixir_1_14
                beamPackages.elixir_ls

                # Rust
                libiconv
                uniffi-bindgen
                rustPackages.rustc
                rustPackages.cargo
                rustPackages.rustfmt
                rustPackages.clippy
                rustPackages.rust-analyzer

                # Ruby
                ruby_3_1

                # Python
                python311

                # Kotlin
                kotlin
                gradle
              ]
              ++ lib.optionals stdenv.isDarwin [
                darwin.apple_sdk.frameworks.Security
                darwin.apple_sdk.frameworks.Foundation
              ];

              RUST_SRC_PATH = "${rustPackages.rust-src}/lib/rustlib/src/rust/library";
            };
      });
}