-ddump-minimal-imports breaks qualified imports (import...as)
When using the -ddump-minimal-imports
option on a Haskell file, it breaks qualified imports.
Ie, suppose one has a line in a file thus:
import qualified Data.ByteString as B (putStr, readFile)
Using -ddump-minimal-imports
will give you something like this:
import Data.ByteString(B.putStr, B.readFile)
There are 3 things wrong here:
-
putStr
andreadFile
should not be renamed thus, as obviouslyData.ByteString
has nothing under those names -
Data.ByteString
is no longer being imported under a different name, so all function uses relying onB.putStr
etc. will break - Finally, it's just ugly to have no spaces between the last letter of the module's name and the opening parenthesis.
I see this behavior under GHC 6.6.1, and asl of #haskell tells me he duplicated the import problem using GHCi version 6.8.0.20071019.
-- gwern