Converting from compile-internal to compilation-start

[kidologie]

Hello - after upgrading to emacs22, I see that compile-internal is now
obsolete - I need to use compilation-start.

What is the correct way to do this:

 (compile-internal (concat "nits -emacs" command)
                    "All done" "rt-nits" nil grep-regexp-alist)

using compilation-start?

Thanks!