patch applied (cabal): Make VersionIntervals an abstract type

Fri Dec 5 15:20:41 PST 2008 Duncan Coutts * Make VersionIntervals an abstract type Provide asVersionIntervals as the view function for a VersionRange This will let us enforce the internal data invariant M ./Distribution/Version.hs -19 +59 View patch online: http://darcs.haskell.org/cabal/_darcs/patches/20081205232041-adfee-17ad2a221...