static O hotwire_onCompile; // voidfunc(Pair<jarFile, transpiledSource>)
sbool hotwire_serially;
static Lock hotwire_overInternalBot_lock = lock();

static Class<?> hotwire_overInternalBot(S progID) {
  ret hotwire_overInternalBot(progID, "main");
}

static Class<?> hotwire_overInternalBot(S progID, S mainClass) ctex {
  Pair<File, S> p = CompilerBot.compileSnippet2(progID);
  lock hotwire_serially ? hotwire_overInternalBot_lock : null;
  callF(hotwire_onCompile, p);
  File jar = p.a;
  assertTrue(jar.getAbsolutePath(), jar.isFile());
  
  L<File> files = hotwire_collectJars(jar);

  // make class loader
  JavaXClassLoader classLoader = hotwire_makeClassLoader(files);
  classLoader.progID = progID;
  
  ret hotwire_finish(classLoader, progID, p.b, mainClass);
}