How to remove old versions of GHC?

Question

I installed Haskell Platform 7.10.3 on my Mac, and when it was finished, it told me that it had discovered old versions of GHC and removed them, but how to do it?

I am using macbook air with OS X 10.11.3.

Answer 1

You can remove previous platforms by running

uninstall-hs from the command line.

You will get output, for example:

-- Versions found on this system
7.10.3
-- To remove a version and all earlier: uninstall-hs thru VERSION
-- To remove only a single version:     uninstall-hs only VERSION

And you can come from there ...