# Template: https://nixos-and-flakes.thiscute.world/development/intro
{
  description = "TinyEMU Nix Dev Shell (Flake-Based)";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-25.05";
  };

  outputs = {nixpkgs, ...}: let
    # system should match the system you are running on
    system = "x86_64-linux";
  in {
    devShells."${system}".default = let
      pkgs = import nixpkgs {
        inherit system;
      };
    in
      pkgs.mkShell {
        # Ref: https://github.com/NixOS/nixpkgs/issues/139943
        # EM_CONFIG = pkgs.writeText ".emscripten" ''
        #   EMSCRIPTEN_ROOT = '${pkgs.emscripten}/share/emscripten'
        #   LLVM_ROOT = '${pkgs.emscripten.llvmEnv}/bin'
        #   BINARYEN_ROOT = '${pkgs.binaryen}'
        #   NODE_JS = '${pkgs.nodejs_24}/bin/node'
        #   CACHE = '${toString ./.cache}'
        # '';

        packages = with pkgs; [
          # Compilation
          gnumake
          emscripten

          # C Libraries
          SDL # Simple DirectMedia Layer
          curl
          openssl
        ];

        shell = "${pkgs.bash}/bin/bash";

        shellHook = ''
          export EM_CACHE=$PWD/.emscripten_cache
          cp -r ${pkgs.emscripten}/share/emscripten/cache $EM_CACHE
          chmod u+rwX -R $EM_CACHE

          function makejs { make -f Makefile.js $@; }
        '';
      };
  };
}