Am Sa., 13. Nov. 2021 um 16:11 Uhr schrieb Simon Jakobi < simon.jakobi@googlemail.com>:
the issue is in fact very simple. You have generated a config for Travis CI, not one for GitHub Actions! [...]
Embarrassing... :-} Thanks for the quick help, things are looking much better now, even GHC 9.2.1 works out-of-the-box! I *did* look into the haskell-ci code to figure out how to generate a workflow instead of a Travis CI configuration, but my copy-n-paste-fu was obviously not strong enough. :-] The haskell-ci README could need some love: GitHub actions are not mentioned at all (you have to use "git log" to figure out that they are supported), OTOH Travis CI is all over the place, although it is effectively dead. Thanks to the haskell-ci team, the tool is great for lazy people like me! Just a tiny bit of documentation plus some more advertising would be great... Cheers, S.