[Haskell-cafe] Backward compatibility

[Alexander Solla]

On Thu, May 2, 2013 at 6:26 AM, Adrian May
<adrian.alexander.may at gmail.com>wrote:

> So WASH is ancient history. OK, lets forget it.
>
> How about the Haskell Platform? Is that ancient history? Certainly not: it
> doesn't compile on anything but the very newest GHC. Not 7.4.1 but 7.4.2.
>

GHC is up to 7.6.


> 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
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