static Class<?> hotwire_overBot(String progID) ctex {
  S compilerBot = "Compiler Bot with caching!";
  startBot(compilerBot, "#1002203");
  
  S ss = "please compile this javax snippet: *";
  print("Sending to compiler bot: " + ss);
  S s = sendToLocalBot_cached(compilerBot, ss, progID);
  new Matches m;
  print(s);
  assertTrue("Compiler Bot response: " + s, match("ok, *", s, m));
  S jarPath = m.unq(0);
  File jar = new File(jarPath);
  assertTrue(jar.getAbsolutePath(), jar.isFile());
  
  // collect urls (program + libraries)
  
  L<URL> urls = litlist(jar.toURI().toURL());
  S dehlibs = unnull(loadTextFileFromZip(jar, "libraries"));
  
  Matcher matcher = Pattern.compile("\\d+").matcher(dehlibs);
  while (matcher.find()) {
    S libID = matcher.group();
    urls.add(loadLibrary(libID).toURI().toURL());
  }

  // make class loader
  URLClassLoader classLoader = new URLClassLoader(urls.toArray(new URL[l(urls)]));

  // load & return main class
  Class<?> theClass = classLoader.loadClass("main");
  
  Class j = getJavaX();
  
  S src = loadTextFileFromZip(jar, "main.java");
  call(j, "registerSourceCode", theClass, src);
  
  synchronized(j) { // hopefully this goes well...
    call(j, "setVars", theClass, progID);
    callOpt(j, "addInstance", progID, theClass);
  }
  
  hotwire_copyOver(theClass);

  return theClass;
}

Began life as a copy of #1000963