[Distutils] Chicken and egg_info.writers problem with setup.py egg_info

[Phillip J. Eby]

At 11:24 PM 4/20/2008 -0700, Philip Jenvey wrote:
>Say you have custom egg_info.writers defined in a project's setup.py.
>When you use the egg_info command to restore an egg-info directory
>that was previously wiped out, the project's egg_info.writers aren't
>used.
>
>Since they aren't registered in your non-existent egg-info directory,
>they aren't picked up. Is it possible for the egg_info command do
>some boot strapping to make them work, since is has the entry_points
>string on hand?

Patches welcome, though I personally just run the egg_info command a 
second time.