Hi Steve, on https://www.stackage.org/, at the bottom of the page, you can find Stackage LTS versions using older GHC versions. Pick one of those and update the resolver in your stack.yaml. E.g. resolver: lts-6.35 Hope that helps! Simon Am Di., 2. Apr. 2019 um 22:17 Uhr schrieb :

I'm going through a book on Haskell that is based on a ghc version between 7.8 and 8.0

I created a new project using the default settings and have a much more recent version of ghc installed

How to I fall back to an earlier version?

Using haskell stack on manjaro linux

Steve _______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners