{ stdenv, mkYarnModules, bergamot-elm }:

let
  # Generate a Nix expression from the yarn.lock file
  yarnModules = mkYarnModules {
    version = "1.0.0";
    pname = "web-files";
    packageJSON = ./package.json;
    yarnLock = ./yarn.lock;
  };

in
  stdenv.mkDerivation {
    name = "web-files";
    src = ./.;
  
    # Use the generated yarnModules
    buildInputs = [ yarnModules bergamot-elm ];
  
    installPhase = ''
      mkdir -p $out $out/katex $out/katex-expression $out/bergamot
      cp ${yarnModules}/node_modules/katex/dist/katex.min.css $out/katex
      cp -r ${yarnModules}/node_modules/katex/dist/fonts $out/katex
      cp ${yarnModules}/node_modules/@navsnpm/katex-expression/dist/katex-expression/* $out/katex-expression
      cp ${bergamot-elm}/Main.min.js $out/bergamot/bergamot.js
    '';
  }