Confusing Error Message if package-name is omitted

[wthaller]

I compiled a library as a GHC package without adding the appropriate package-name flag to the ghc command line.
When trying to compile a module that used the package, ghc complained that it couldn't find package "Main".

This happens with the HEAD. With GHC 5.04 it (seemingly) was no problem to leave out the -package-name specifier.

Why is the -package-name flag needed at all?

[simonmar]

Logged In: YES 
user_id=48280

-package-name will be gone in 6.4 (yay!), so I can close
this bug.