{
  cowsay,
  ponysay,
  lib,
  makeWrapper,
  stdenv,
}:
stdenv.mkDerivation {
  pname = "my-package";
  version = "0.1.0";
  src = ./.;
  buildInputs = [makeWrapper];
  installPhase = ''
    mkdir -p $out/bin
    cp myscript.sh $out/bin/myscript.sh
    chmod +x $out/bin/myscript.sh
    wrapProgram $out/bin/myscript.sh \
                --prefix PATH : ${lib.makeBinPath [cowsay ponysay]} '';
}