Re: [Haskell-cafe] What is a good way to test library on several ghc's?

If you are on Ubuntu, check out hvr's PPA: https://launchpad.net/~hvr/+archive/ubuntu/ghc https://github.com/hvr/multi-ghc-travis may also be of interest Excerpts from Anton Kholomiov's message of 2017-03-13 10:27:15 +0300:

Someone asked to add support in my lib for older version of GHC. I know that there are GHC-version specific pragmas to activate the code on specific version.

I'm not quite sure how to setup the environment to use several GHCs. How do you do that kind of thing?

Cheers! Anton