patch applied (cabal): Fix configure for hugs where we don't know what packages are installed

[Duncan Coutts]

Tue Mar  4 18:36:26 PST 2008  Duncan Coutts <duncan at haskell.org>
  * Fix configure for hugs where we don't know what packages are installed
  For Hugs, nhc98 and other compilers we do not know what packages are
  already installed, so we just make some up, pretend that they do exist
  and just hope for the best. We make them up based on what other package
  the package we're currently building happens to depend on.
  See inventBogusPackageId. Let's hope they really are installed... :-)
  One could see this as all rather redundant - carefully making up bogus
  information to satisfy a careful check. I prefer to see it as making
  explicit something that was previously implicit. The proper solution is
  to discover what packages are currently installed.

    M ./Distribution/Simple/Configure.hs -7 +18

View patch online:

  http://darcs.haskell.org/cabal/_darcs/patches/20080305023626-adfee-5b79f06cf78d817e0f691ec425c1276689910aa2.gz