Thanks. We also should improve on what the installer does to the PATH in previous of existing HP installations. And provide a similar utility for choosing the default HP (not just in the current window) by changing the PATH in ther registry. I took a stab at this last one, but didn't have it working yet due to getting registry permissions wrong. You can see it in older commits in the win-hp-path repo on github. Neil Mitchell pointed out in the reddit thread that this utility actually isn't specific to HP - it can be used to choose between different GHC versions regardless of whether they are part of HP installations. But that is not for the faint of heart. Regards, Yitz On Wed, Nov 12, 2014 at 3:18 PM, Mikhail Glushenkov wrote:

Hi,

On 12 November 2014 03:43, Yitzchak Gale wrote:

...

The win-hp-path project provides the use-hp command, which makes it easy to switch between different versions of Haskell Platform on Windows.

https://github.com/ygale/win-hp-path

Very nice! This should be added to the official installer. There's a ticket already: https://github.com/haskell/haskell-platform/issues/56