title: How do I get ghci to see packages I installed from cabal?
body: <p>I've installed the such-and-such a package using cabal, and I can build a program that depends on it using <code>cabal build</code>. But when I load the same program in ghci, ghci complains that it "Could not find module `such-and-such'".</p>
  
  <p>I'm surprised this doesn't "just work." How do I tell ghci where to find the packages I've installed with cabal?</p>
  
  <p>Here's my setup: I'm using GHC 6.10.4 on Mac OS X 10.6.3, cabal-install version 0.6.2 using version 1.6.0.3 of the Cabal library.</p>