[Haskell-cafe] Can't install haskellnet with ghc7

Charles-Pierre Astolfi cpa at crans.org
Wed May 4 21:57:51 CEST 2011

I tried to install haskellnet with mime-mail-0.2.x and an older
version of the text library but it still fails with the same error.

Btw, what is the best way to uninstall a package that has been
installed via cabal? (or to downgrade it, fwiw)


On Tue, Apr 26, 2011 at 23:31, Vincent Hanquez <tab at snarc.org> wrote:
>  On 04/26/2011 10:17 PM, Charles-Pierre Astolfi wrote:
>> Hi -cafe,
>> Did anybody managed to install haskellnet from hackage with ghc7?
>> I tried on windows and mac and I get the following type error:
>> [ 4 of 11] Compiling Network.HaskellNet.SMTP (
>> Network/HaskellNet/SMTP.hs, dist/build/Network/HaskellNet/SMTP.o )
>> Network/HaskellNet/SMTP.hs:269:25:
>>     Couldn't match expected type `Data.Text.Internal.Text'
>>                 with actual type `[Char]'
>>     Expected type: Data.Text.Internal.Text
>>       Actual type: String
>>     In the first argument of `simpleMail', namely `to'
>>     In a stmt of a 'do' expression:
>>         myMail<- simpleMail to from subject plainBody htmlBody attachments
>> Am I missing something?
> your mime-mail library is too recent.
> the upper version in the cabal file of haskellnet is not limited, so it's
> picking up the 0.3.0 version which is incompatible with the 0.2.x.
> Otherwise it was working for me with the previous version for both ghc6 and
> ghc7.
> --
> Vincent

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