[Haskell-cafe] Hackage Build Failures

[Henning Thielemann]

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