[Haskell-cafe] cabal: other-modules

What is the purpose of the "Other-Modules" section in a cabal file? (I.e., can we drop it?) If it's just the set of dependencies of the "Exported-Modules", then a reasonable build system should be able to figure this out on its own. The current situation is that I have to manage this list manually (or is there some tool?) and if I forget to name some "other-module", then "cabal install" happily builds and installs (!) the package anyway, but I'm getting linker errors when using it. This is a nuisance, to say the least. J.W.