Installing binary tarball fails on Linux

[Ganesh Sittampalam]

On 01/10/2012 12:05, Simon Marlow wrote:

> This probably means that you have packages installed in your ~/.cabal
> from a 32-bit GHC and you're using a 64-bit one, or vice-versa.  To
> avoid this problem you can configure cabal to put built packages into a
> directory containing the platform name.

How does one do this? I ran into this problem a while ago and couldn't
figure it out:
http://stackoverflow.com/questions/12393750/how-can-i-configure-cabal-to-use-different-folders-for-32-bit-and-64-bit-package

Ganesh