#let 
#  pkgs = import ( builtins.fetchTarball {
#    name = "nixos-25.05";
#    url  = "https://github.com/NixOS/nixpkgs/archive/nixos-25.05.tar.gz";
#    sha256 = "sha256:0v6bd1xk8a2aal83karlvc853x44dg1n4nk08jg3dajqyy0s98np";
#  }) {};
#in
{ pkgs ? import <nixpkgs> { }
  , pkgsLinux ? import <nixpkgs> { system = "x86_64-linux"; } 
}:
pkgs.stdenv.mkDerivation {
  pname = "xrforge";
  version = "0.1.0";

  # Fetch the matching cosmopolitan source tree
  src = pkgs.fetchFromGitHub {
    owner = "jart";
    repo = "cosmopolitan";
    # We use the version that matches the pinned nixpkgs package release
    rev = pkgs.cosmopolitan.version;
    hash = pkgs.cosmopolitan.src.outputHash; 
  };

  nativeBuildInputs = with pkgs; [
    gnumake
    unzip
    curl
    cosmopolitan.cosmocc 
  ];

  buildPhase = ''
    runHook preBuild

    # cosmocc knows exactly where the include/ and lib/ files are 
    # from the base package. Just pass it the source and tell it to compile.
    # build once run anywhere using linux
    export CC=cosmocc 
    export CXX=cosmocc 
    #sed -i 's/^SHELL/#SHELL/g' Makefile
    #make -j8 #o//tool/net/redbean.o
    cosmocc -O2 -I. tool/net/redbean.c -o redbean.com

    runHook postBuild
  '';

  installPhase = ''
    runHook preInstall

    #mkdir -p $out/bin
    #cp redbean.com $out/bin/xrforge.com

    ## Run your local enhancement script
    #bash ${./util/xrforge.sh} $out/bin/xrforge.com

    #chmod +x $out/bin/xrforge.com

    runHook postInstall
  '';
}