Please describe the problem.

Started to happen recently:

❯ git grep 'ould not find module .System.Posix.IO'
cron-20241016/build-windows.yaml-1613-1929a4fc-failed/0_build-package.txt:2024-10-16T03:47:07.6376436Z ##[error]    Could not find module `System.Posix.IO'.
cron-20241016/build-windows.yaml-1613-1929a4fc-failed/build-package/18_Build git-annex.txt:2024-10-16T03:47:07.6376375Z ##[error]    Could not find module `System.Posix.IO'.
cron-20241017/build-windows.yaml-1614-1929a4fc-failed/0_build-package.txt:2024-10-17T03:45:41.3251590Z ##[error]    Could not find module `System.Posix.IO'.
cron-20241017/build-windows.yaml-1614-1929a4fc-failed/build-package/18_Build git-annex.txt:2024-10-17T03:45:41.3251517Z ##[error]    Could not find module `System.Posix.IO'.
cron-20241018/build-windows.yaml-1615-844a1bc5-failed/0_build-package.txt:2024-10-18T03:46:27.8014646Z ##[error]    Could not find module `System.Posix.IO'.
cron-20241018/build-windows.yaml-1615-844a1bc5-failed/build-package/18_Build git-annex.txt:2024-10-18T03:46:27.8014601Z ##[error]    Could not find module `System.Posix.IO'.
2024-10-16T03:47:07.6264270Z [ 91 of 739] Compiling Utility.OpenFile
2024-10-16T03:47:07.6264781Z 
2024-10-16T03:47:07.6314519Z D:\a\git-annex\git-annex\Utility\OpenFile.hs:11:1: error: [GHC-87110]
2024-10-16T03:47:07.6376436Z ##[error]    Could not find module `System.Posix.IO'.
2024-10-16T03:47:07.6378352Z [ 92 of 739] Compiling Utility.FileSize
2024-10-16T03:47:07.6379064Z     Use -v to see a list of the files searched for.
2024-10-16T03:47:07.6379741Z [ 93 of 739] Compiling Utility.FileMode
2024-10-16T03:47:07.6380363Z    |
2024-10-16T03:47:07.6380751Z [ 94 of 739] Compiling Git.FileMode
2024-10-16T03:47:07.6381306Z 11 | import System.Posix.IO
2024-10-16T03:47:07.6381845Z [ 95 of 739] Compiling Types.Transitions
2024-10-16T03:47:07.6382417Z    | ^^^^^^^^^^^^^^^^^^^^^^

full logs are on smaug or for a while on github actions

What steps will reproduce the problem?

What version of git-annex are you using? On what operating system?

Please provide any additional information below.

# If you can, paste a complete transcript of the problem occurring here.
# If the problem is with the git-annex assistant, paste in .git/annex/daemon.log


# End of transcript or log.

Have you had any luck using git-annex before? (Sometimes we get tired of reading bug reports all day and a lil' positive end note does wonders)

fixed --Joey