pg_config is missing - bug?

[Tom Allison <tom@tacocat.net>]

I have recently installed postgres8.2 and am unable to find the  
pg_config binary.

I need this so that I can install ruby gems.

I have also been unable to find this file using dpkg -S so it seems  
that there is no package which carries this file.

Bug on the maintainers part or an oversight on my part?