hi version is read too late
|Reported by:||simonmar||Owned by:|
|Type of failure:||Difficulty:||Easy (less than 1 hour)|
|Test Case:||N/A||Blocked By:|
The version in an interface file is currently being checked too late, which means that GHC gets confused by out of date .hi files instead of emitting a proper error message. (bug isn't in 6.6, only HEAD).