make cabal less chatty w.r.t. project files in use

[ulysses4ever]

This is a WIP to fix #10885.

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[Mikolaj]

Are you still seeing the problems in the CI? As in

I'm seeing weird (seemingly) unrelated test failures in CI (just several) on my draft PR and can't explain them.
They all seem to start with output:


+ /usr/bin/git ls-files --cached --modified


so that's a new line in the output, right? No idea where it comes from...

Here's an example run https://github.com/haskell/cabal/actions/runs/15117706253/job/42492471019

Would appreciate any insights...

[ulysses4ever]

@Mikolaj yes, that's why the pipelines are currently failing I believe

[Mikolaj]

I don't think this + indicates an error, because it's not in the context of "Actual output differs from expected:" and there's no patch syntax (---, +++, @@ -1,7 +1,5 @@, etc.). See this real error from the same file for comparison:

Actual output differs from expected:

stderr:
--- /tmp/cabal-testsuite-154925/cabal.yes.dist/cabal.yes.out.normalized	2025-05-19 16:23:19.039827000 +0000
+++ /tmp/cabal-testsuite-154925/cabal.yes.dist/cabal.yes.comp.out.normalized	2025-05-19 16:23:19.039827000 +0000
@@ -1,7 +1,5 @@
 # cabal clean
 # cabal v2-repl
-Configuration is affected by the following files:
-- cabal.project
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

*** unexpected failure for PackageTests/MultiRepl/CustomSetupKeepTempFiles/cabal.test.hs

[ulysses4ever]

Oh my, I had a feeling I lost my way in the output... I wonder if in the future we could try to avoid generating +'s like the one that confused me.

The actual failure is expected and will be fixed. The reason it wasn't fixed before is that when I ran the testsuite locally --accept'ing the necessary changes, this test failed with an exception in ProjectaOrchestration.hs. This is a discrepancy between my local setup and CI that probably deserves a separate ticket but let's not get bogged down by this.

Thanks for unlocking me! Now I can probably finish fixing tests at least.

[Bodigrim]

An alternative is something like

Suggested change

	map projectConfigPathRoot configFiles
	L.\\ ["cabal.project", "cabal.project.local", "cabal.freeze"]
	== []
	all ((`elem` cwdProjectFiles) . projectConfigPathRoot) configFiles
	cwdProjectFiles = ["cabal.project", "cabal.project.local", "cabal.freeze"]

[Bodigrim]

I'd expect

Suggested change

	text "Configuration is affected by '" <+> path <+> text "'"
	text "Configuration is affected by '" <> path <> text "'"

and similar above.

[ulysses4ever]

2025-05-29T15:32:41.9907347Z PackageTests/JS/JSPPOptions/other-arch.test.hs                                                                    FAIL (2.94s)

I don't see this test in my tree — is it a ghost?

[geekosaur]

Seems to be from https://github.com/haskell/cabal/pull/10722/files#diff-5b2c8500c79636c2f408a166261b24ddbdf12e9aaa31c75b0fb50f8a954188f4 ?