Fix #8928 Conclude setup messages with an ellipsis

[mpilgrem]

• Patches conform to the coding conventions.
• Any changes that could be relevant to users have been recorded in the changelog.
• The documentation has been updated, if necessary.
• Include manual QA notes if your PR relates to cabal-install.

Bonus points for added automated tests!

[ulysses4ever]

Thank you!

I'm seeing a good bunch of reference tests results holding the .., so you will have to run the test suite with --accept locally to update them. Details on running the test should be in https://github.com/haskell/cabal/blob/master/cabal-testsuite/README.md Or you could sed...

[mpilgrem]

@ulysses4ever, I took the search and replace route. After a couple of false starts, the checks now pass.

[ulysses4ever]

Terrific!

[Kleidukos]

@mpilgrem Hi, do you need help with rebasing this PR? I can offer my help.

[mpilgrem]

@Kleidukos, I had not spotted that. I'll look at it over the coming weekend and let you know.

[ulysses4ever]

@mpilgrem thanks a lot for updating the PR and sorry it took so long to get all the approvals! There is a couple tests that have been added in the meantime and they have to be fixed, see the CI but I think the relevant bit is:

UNEXPECTED FAIL: 
PackageTests/NewBuild/CmdBuild/ScriptBuildRepl/cabal.test.hs 
PackageTests/MultiRepl/EnabledClosure/cabal.test.hs 
PackageTests/MultiRepl/EnabledSucc/cabal.test.hs

[ulysses4ever]

@mpilgrem thanks a lot for attending to it! One thing for the future: normally, we don't manually merge PRs but rather employ a merge bot. So, when you get 2 approvals and a green CI, you're expected to put one of the two labels: merge-me or squash+merge, and the bot will merge it after a two-day delay (a precautionary measure).

[mpilgrem]

@ulysses4ever, sorry - I did not appreciate that (about merging). EDIT: I should have read the CONTRIBUTING.md more carefully.