Exposed module still hidden, why?

[Greg Fitzgerald]

Using GHC 6.8.1 on Windows XP, after having used ghc-pkg to expose '
directory-1.0.0.0', I am getting an error when I build haddock that says the
package is hidden.  When I type "ghc-pkg list", the package is not in
parenthesis.  Typing "ghc -v" says that it is using the file from
"C:\ghc\ghc-6.8.1\package.conf".  That package.conf file has the 'exposed'
set to True for that file.  Why does GHC still think the package is hidden?

...\haddock-0.8>runhaskell Setup.lhs configure
Configuring haddock-0.8...

...\haddock-0.8>runhaskell Setup.lhs build
Preprocessing executables for haddock-0.8...
shift/reduce conflicts:  5
Building haddock-0.8...

src/Main.hs:49:7:
    Could not find module `System.Directory':
      it is a member of package directory-1.0.0.0, which is hidden

...\haddock-0.8>ghc-pkg list
C:/ghc/ghc-6.8.1\package.conf:
    Cabal-1.2.2.0, HUnit-1.2.0.0, OpenGL-2.2.1.1, QuickCheck-1.1.0.0,
    Win32-2.1.0.0, array-0.1.0.0, base-3.0.0.0, bytestring-0.9.0.1,
    cgi-3001.1.5.1, containers-0.1.0.0, directory-1.0.0.0, fgl-5.4.1.1,
    filepath-1.1.0.0, (ghc-6.8.1), haskell-src-1.0.1.1,
    haskell98-1.0.1.0, hpc-0.5.0.0, html-1.0.1.1, mtl-1.1.0.0,
    network-2.1.0.0, old-locale-1.0.0.0, old-time-1.0.0.0,
    packedstring-0.1.0.0, parallel-1.0.0.0, parsec-2.1.0.0,
    pretty-1.0.0.0, process-1.0.0.0, random-1.0.0.0,
    regex-base-0.72.0.1, regex-compat-0.71.0.1, regex-posix-0.72.0.1,
    rts-1.0, stm-2.1.1.0, template-haskell-2.2.0.0, time-1.1.2.0,
    xhtml-3000.0.2.1

Thanks,
Greg
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