On Wed, Nov 9, 2011 at 3:48 AM, Rogan Creswick <creswick@gmail.com> wrote:

On Tue, Nov 8, 2011 at 4:30 PM, Giovanni Tirloni <gtirloni@sysdroid.com> wrote:
>> 3) How to install it into a separate location so it would not ruin my
>> current platform?
>
> You can install it under a different username.

Haskell Platform (HP) is installed for *all* users in one location at OSX:
/Library/Frameworks/GHC.framework/Versions/
total 8
drwxrwxr-x 4 root admin 136 21 feb 2011 .
drwxrwxr-x 5 root admin 170 21 feb 2011 ..
drwxrwxr-x 4 root admin 136 11 jun 2010 612
lrwxr-xr-x 1 user staff 3 21 фев 2011 Current -> 612

1) How different username will help here?

I meant install new packages through cabal under a different username. The cabal repo should be localized unless you specify --global

Please see Rogan's suggestions.

2) Is there any way to see what packages HP includes without actually installing it? Some online document listing HP packages?

http://hackage.haskell.org/platform/contents.html

http://lambda.haskell.org/hp-tmp/docs/2011.2.0.0/start.html