Cabal is giving me mixed messages. When I say: Extensions: DeriveFunctor It says: Warning: Unknown extensions: DeriveFunctor
Cabal allows for a freeform Stability field: stability: freeform The stability level of the package, e.g. alpha开发者_运维知识库, experimental, provisional, stable.
When installing Haskell pango on mac (sudo cabal install pango), the first problem is that it tries to install packages I\'ve already installed. I\'ve install haskell98 (successfully), but pango tries
I install wxWidgets with macports then ran the command: sudo cabal install wx which output included: /bin/sh: wxdirect: command not found
If I got the line > { -# OPTIONS_GHC -fglasgow-exts -XTemplateHaskell #- } in the documentation-part (description) of the .cabal-file I\'ll get the error message
Here is the output from verbose mode.I know this used to work for me before but now this happens.I\'ve tried it with other packages and got the same result.
Not a programming question, 开发者_开发问答but the first time I see something like this. UNR 1.6 (based on Ubuntu 10.04) installs the 6.12.1 version of GHC.
With a clean install of the \"Haskell Platform\". (OS X Snow-Leopard & Platform 2010.1.0.1), doing this causes simple sequence causes very weird cabal install behaviour:
Do you know a Haskell package for dirent开发者_JAVA技巧.h on Windows? There is similar set of functions in system.posix but those functions are not implemented on Windows.
When I run \"cabal update\" on my Mac (Snow Leopard, Intel), I get: % cabal update Downloading the latest package list from hackage.haskell.org
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