[Haskell-cafe] Backward compatibility

Alexander Solla alex.solla at gmail.com
Fri May 3 04:28:52 CEST 2013


>
>
>
>> Now that's rapid maintenance, but it's still version hell because you've
>> got to have that compiler installed first (even though HP is supposed to be
>> a way to acquire haskell) and you probably haven't. You've probably got the
>> one from the linux package which hasn't been maintained since, ooh, must
>> have been at least a week ago, so you install the new one and you've
>> trashed cabal. How long is that puzzle gonna take to unravel?
>>
>
> About 12 seconds, if you read http://www.haskell.org/platform/linux.html:
>
> Download the source tarball for Unix-like systems: here
>
>
>    -  *haskell-platform-2012.4.0.0.tar.gz<http://lambda.haskell.org/platform/download/2012.4.0.0/haskell-platform-2012.4.0.0.tar.gz>
>       *
>       - SHA-1: 7976508c50305969f64c721a1d095ae22efff8b7
>
> Get and install GHC 7.4.2 prior to building the platform:
>
>
>    - GHC 7.4.2 <http://haskell.org/ghc/download_ghc_7_4_2.html>
>
> Finally, unpack the Haskell Platform source tarball, and run (possibly
> with 'sudo'):
>
>     ./configure
>
>     make
>
>     make install
>
>
Also, the Haskell Platform ./configure step checks which version of GHC you
have installed, and requires you to pass the option --enable-*unsupported*-*
ghc*-version in order to compile it with anything other than GHC 7.4.2.

Did you try an unsupported version?  And now you're complaining?
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