Drop GHC-7 support, Ubuntu Bionic&Xenial; Add Noble Numbat

[phadej]

Resolves #719

[liskin]

Is it intentional that haskell-ci silently stops generating CI matrix entries for GHC 7.* without any warning/error whatsoever, despite those being mentioned in tested-with?

[phadej]

Is it intentional that haskell-ci silently stops generating CI matrix entries for GHC 7.* without any warning/error whatsoever, despite those being mentioned in tested-with?

Unfortunately it's how haskell-ci works. We specify a version range for GHC versions; if today you write tested-with: GHC >=10 you won't get none, with GHC >=7.0 you'll get all (incl all minor versions, i.e. a lot).

OTOH, the

*INFO* Generating GitHub config for testing for GHC versions: 8.0.2 8.2.2 8.4.4 8.6.5 8.8.4 8.10.7 9.0.2 9.2.8 9.4.7 9.6.3 9.8.1

output is almos the only thing haskell-ci outputs, so should be easy to spot if something as off; and obviously git diff before you commit the changes.

So I don't see that "silence" as a major problem.

[liskin]

Oh, I didn't realise you can use anything else than == in tested-with (it doesn't seem to be documented anywhere). Makes sense if you indeed can.

And yeah, as you may have noticed from the GitHub messages about referenced commits/PRs, I have implemented exactly the check you suggest: liskin/xmonad-maintenance@50b9290

Seemed like a bit of a hack but good to know it's not 🙂

[phadej]

haskell-ci is not meant nor designed to be run in non-supervised environments.

[liskin]

It creates a pull request, that's supervised enough for us 😏
Still, we want to automate as much as possible. Relying on humans tends to disappoint. Hence the safety check.