On Windows, cabal hangs indefinitely when fetching a git source-repository-package

[JakobBruenker]

Describe the bug
On Windows, when cabal tries fetching a git repo, it hangs indefinitely, in waitForProcess:

cabal/Cabal/src/Distribution/Simple/Utils.hs

Line 783 in 96dea0f

exitcode <- Process.waitForProcess p

When run for the first time, it hangs while running "git.exe" "submodule" "deinit" "--force" "--all"; if cabal is killed, on subsequent runs it hangs on "git.exe" "fetch".

Running the git command manually in the corresponding working directory does not hang (and after doing so, cabal builds the package successfully).

To Reproduce
Steps to reproduce the behavior:

$ git clone https://github.com/JakobBruenker/cabal-hangs
$ cd cabal-hangs/
$ cabal v2-build -v3

The last line logged before cabal hangs should be "C:\Program Files\Git\cmd\git.exe" "submodule" "deinit" "--force" "--all", or the equivalent with a different path to git.exe.

Expected behavior
It should build the package successfully

System information

• Windows 11
• ghc 9.2.5
• cabal 3.8.1.0, also tested on HEAD (96dea0f)

[Mikolaj]

Thank you for the report. Could this be a process package bug? Is this reproduced with the newest process on Hackage?

Also, are we sure the same works fine on, say, Linux? Is there a test in CI for exactly this case (e.g., skipped on Windows, because we though it's a CI fluke)?

[JakobBruenker]

@Mikolaj I was able to build the same package under WSL, so I believe it does work in Linux, though of course there could be some confounding variable.

Looks when I built from source, cabal used process 1.6.15.0, which is one version older than the newest version on hackage. I can check later today if a small program that just waits for a git process has the same issue on my machine.

[JakobBruenker]

@Mikolaj I can confirm that the same thing happens when just using waitForProcess with the same commands outside of cabal. I will create an issue in the process repo. (edit: haskell/process#273)

[Mikolaj]

Well done. Thank you.

[jasagredo]

haskell/process#273 is closed by haskell/process#277. Can we close this one? @ulysses4ever pinging you as you reopened this ticket.

[ulysses4ever]

Sorry, this was my bad, probably