Compiling 20250925, variable not in scope error

I'm attempting to update Arch Linux packaging ... the major caveat being we're stuck using an old (9.4.8) version of ghc for now...

Building the latest tagged release now produces this error:

Utility/OpenFd.hs:28:9: error:
    Variable not in scope: when :: Bool -> IO () -> IO a0
   |
28 |         when closeonexec $
   |         ^^^^

I'm not sure this error is directly caused by the antiquated compiler, but also not sure how to debug this further or work around it either.

fixed --Joey