patch applied (cabal): Make the compiler PackageDB stuff more flexible

[Duncan Coutts]

Thu Dec 11 06:16:49 PST 2008  Duncan Coutts <duncan at haskell.org>
  * Make the compiler PackageDB stuff more flexible
  We support using multiple package dbs, however the method for
  specifying them is very limited. We specify a single package db
  and that implicitly specifies any other needed dbs. For example
  the user or a specific db require the global db too. We now
  represent that stack explicitly. The user interface still uses
  the single value method and we convert internally.

    M ./Distribution/Simple/Compiler.hs +20
    M ./Distribution/Simple/Configure.hs -8 +19
    M ./Distribution/Simple/GHC.hs -6 +12
    M ./Distribution/Simple/JHC.hs -3 +7
    M ./Distribution/Simple/LHC.hs -8 +21

View patch online:
http://darcs.haskell.org/cabal/_darcs/patches/20081211141649-adfee-e37bf8bd078684215cc8f208d31dd622e5025015.gz