fdLock invalid argument on WSL1

[gmtcrary]

Cabal v1-build under WSL1 causes an fdLock invalid argument error.

fdLock: invalid argument (Invalid argument)

To Reproduce

Running cabal v1-build under Hackage-server's Nix-shell (commit 9e451cb) on a WSL1 Ubuntu 20.04 system.

$ cabal v1-build

System information

cabal-install version 3.4.0.0
compiled using version 3.4.0.0 of the Cabal library
Glasgow Haskell Compilation System, version 8.10.4
WSL1 Ubuntu 20.04
Nix-shell from hackage-server commit 9e451cb off the master branch

A partial strace log leading up to the fdlock:

read(13, "", 32752)                     = 0
close(13)                               = 0
unlink("/home/takumi/.cabal/packages/hackage.haskell.org/timestamp.json") = -1 ENOENT (No such file or directory)
futex(0x7f1640000be8, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7f1640000bf0, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x1722e38, FUTEX_WAKE_PRIVATE, 1) = 1
openat(AT_FDCWD, "/home/takumi/.cabal/packages/hackage.haskell.org/hackage-security-lock", O_RDWR|O_CREAT, 0666) = 13fcntl(13, F_OFD_SETLKW, {l_type=F_WRLCK, l_whence=SEEK_SET, l_start=0, l_len=0}) = -1 EINVAL (Invalid argument)
close(13)                               = 0
poll([{fd=2, events=POLLOUT}], 1, 0)    = 1 ([{fd=2, revents=POLLOUT}])
write(2, "fdLock: invalid argument (Invali"..., 44fdLock: invalid argument (Invalid argument)
) = 44

I'm not sure which WSL version is favored by Cabal so I will be testing WSL2 as well.

[Mikolaj]

Hi @adpextwindong! Thank you for the report. Yes, I've heard people having similar problems with cabal on WSL1, but no problem with WSL2. Please let us know if that's the case for you, as well.

[phadej]

This is duplicate of #6551