Minor refactor

[mpilgrem]

• Any changes that could be relevant to users have been recorded in ChangeLog.md.
• The documentation has been updated, if necessary

Please also shortly describe how you tested your change. Bonus points for added tests!

[mpilgrem]

Hi! @benz0li. Stack's CI has started failing (after 2026-02-10) with:

+ stack test --docker --system-ghc --no-install-ghc --flag stack:static --haddock --no-haddock-deps '--ghc-options=-Werror -O0' --copy-bins --local-bin-path bin
Received ExitFailure 1 when running
Raw command: /usr/bin/docker inspect quay.io/benz0li/ghc-musl:9.10.3
Standard output:
[]
Standard error:
error: no such object: quay.io/benz0li/ghc-musl:9.10.3

I am not aware of anything having changed at Stack's end. Are you aware of anything at quay.io/benz0li/?

[mpilgrem]

Actually @benz0li, I think the CI fail may be due to a change in Docker version in the CI environment. Stack checks for Error: no such object: and I see the message is error: no such object:.

• [Windows/Ubuntu] Docker Server and Client will be updated to version 29.1.*, Docker Compose will be updated to version 2.40.3 on February 9th, 2026 actions/runner-images#13474
• docker/cli@9ba1314

EDIT: Fixed in:

• Re #6848 Temporary fix to CI to pull needed Docker image #6849
• Fix #6848 Support Docker >= 29.0.0 #6850