--repl-multi-file doesn't seem to play nice with older versions of GHC

[sol]

Describe the bug

I am trying to use --repl-multi-file to simplify cabal-doctest (sol/doctest#428) and make it more robust.

The documentation of --repl-multi-file states:

Write repl options to this directory rather than starting repl mode

Given this, I would assume that

$ cabal repl -w $GHC

and

$ cabal repl --repl-multi-file ./tmp -w $GHC
$ $GHC --interactive `cat ./tmp/*-inplace`

are essentially equivalent.

However, this doesn't seem to be the case. While the earlier works for a wide range of GHC versions, the later does not work with versions of GHC older than 9.4.*.

To Reproduce

$ git clone https://github.com/sol/markdown-unlit && cd markdown-unlit

$ GHC=ghc-9.2.8

$ cabal repl -w $GHC

$ cabal repl --repl-multi-file . --keep-temp-files -w $GHC

$ $GHC --interactive `cat markdown-unlit-0.6.0-inplace`
...
ghc: unrecognised flag: -this-package-name
...

Expected behavior

$ cabal repl -w $GHC

and

$ cabal repl --repl-multi-file ./tmp -w $GHC
$ $GHC --interactive `cat ./tmp/*-inplace`

behave the same, at least in a none-multi-repl scenario.

System information

cabal-install-3.12.1.0