patch applied (ghc): Fix #2873: should fail if a package DB desn't exist

[Simon Marlow]

Thu Jan  8 01:56:28 PST 2009  Simon Marlow <marlowsd at gmail.com>
  * Fix #2873: should fail if a package DB desn't exist
  We allowed non-existence before because the user DB is allowed to not
  exist, so now we have an explicit exception for that case.

    M ./utils/ghc-pkg/Main.hs -15 +15

View patch online:
http://darcs.haskell.org/ghc/_darcs/patches/20090108095628-12142-22afa9f2dcaa02f99e0d91c6e341dd0c9a19ab6f.gz