On Wed, 1 Oct 2008, Mitchell, Neil wrote:
The error comes from using QuickCheck 2, which happens to also use the operator (><). I can see two ways to solve the problem:
(1) Add "< 2" after "QuickCheck" in the Wired.cabal file.
(2) Add "hiding ((><))" after "import Test.QuickCheck" in Data/Hardware/Internal.hs
Emil,
my suggestion is: Please use alternative (2), at least if there are no further problems with quickcheck 2! Otherwise, depending on quickcheck <2 just introduces unnecessary package incompatibilities.
Note that if you import hiding something that doesn't existing you'll have a problem. Therefore this fix will require >= 2 for quickcheck, and introduce incompatibilities either way.
That's why I like to import infix operators explicitly instead of hiding some identifiers: http://www.haskell.org/haskellwiki/Import_modules_properly