let
  common = import ./common.nix;
  pkgs = import common.pkgsSrc {};
  nodejs = pkgs.${common.nodejs};

  bower2nix = 
  bowerNix = pkgs.stdenv.mkDerivation {
    name = "cryptpad-bower-ifd";
    src = common.cryptpadSrc;
    
    buildPhase = ''
      ${pkgs.nodePackages.bower2nix}/bin/bower2nix bower.json bower.nix
    '';

    installPhase = ''
      cp bower.nix $out
    '';

    dontFixup = true;
  };
  bower = pkgs.buildBowerComponents {
    name = "cryptpad-bower";
    generated = bowerNix;
    src = common.cryptpadSrc;
  };

  npmNix = pkgs.stdenv.mkDerivation {
    name = "cryptpad-npm-ifd";
    src = common.cryptpadSrc;

    buildPhase = ''
      ${pkgs.nodePackages.node2nix}/bin/node2nix -l package-lock.json
    '';

    installPhase = ''
      mkdir -p $out/
      cp *.nix $out/
    '';

    dontFixup = true;
  }; 
  npm = (import npmNix {
    inherit pkgs nodejs;
  }).nodeDependencies;
  
in
  pkgs.stdenv.mkDerivation {
    name = "cryptpad";
    src = common.cryptpadSrc;

    installPhase = ''
      mkdir -p $out/{bin,opt}

      # copy the source code
      cp -r customize.dist lib server.js www $out/opt/

      # mount node_modules
      ln -s ${npm}/lib/node_modules $out/opt/node_modules

      # mount bower, based on the .bowerrc file at the git repo root
      ln -s ${bower} $out/opt/www/bower_components

      # cryptpad is bugged with absolute path, this is a workaround to use absolute path as relative path
      ln -s / $out/opt/root

      # start script
      cat > $out/bin/cryptpad <<EOF
      #!${pkgs.bash}/bin/bash
      cd $out/opt/
      export PATH="${npm}/bin:$PATH"
      ${nodejs}/bin/node server.js
      EOF

      chmod +x $out/bin/cryptpad
    '';

    dontFixup = true;
  }