{ stdenvNoCC, buildAssets, nodePackages, fontawesome, haskellPackages, haskell, sass, ... }:
stdenvNoCC.mkDerivation (finalAttrs: {
  pname = "www-assets";
  version = "0.1.0.0";
  src = builtins.path {
    path = ../.;
    name = "assets";
  };
  nativeBuildInputs = [
    buildAssets
    nodePackages.katex
    fontawesome
    sass
    (haskell.lib.compose.justStaticExecutables haskellPackages.hjsmin)
  ];
  phases = "installPhase";

  installPhase = ''
    # logos
    mkdir -p $out/logos

    # favicon
    cp -r $src/favicon $out/favicon

    # css
    mkdir -p $out/css
    sass $src/css/main.scss $out/css/main.css

    # javascript
    cp -r $src/js $out/js
    chmod +rwx $out/js
    for x in $out/js/*.js; do
      hjsmin -i "$x" -o "''${x%.js}.min.js"
    done

    # fontawesome
    mkdir -p $out/fontawesome
    cp -r ${fontawesome}/{css,webfonts} $out/fontawesome

    # katex
    cp -r ${nodePackages.katex}/lib/node_modules/katex/dist $out/katex

  '';
})