Default environment written to wrong place

[josephcsible]

Describe the bug
Cabal writes the environment file under a subdirectory of ~/.ghc/, which then goes unused because GHC looks for it under a subdirectory of ~/.local/share/ghc/.

To Reproduce
Steps to reproduce the behavior:

docker run -it haskell:9.2 bash  # optional; the problem also happens with a regular ghcup install
cabal v2-update
cabal v2-install --lib contravariant
ghci
import Data.Functor.Contravariant.Divisible

Expected behavior
The import should succeed, since the package it's in was just installed and added to the default environment.

System information

• Operating system: Debian buster
• cabal 3.6.2.0, ghc 9.2.1

Additional context
This problem doesn't occur with older versions of GHC. Also, I discovered I can work around it by symlinking ~/.local/share/ghc/ to ~/.ghc/.

[gbaz]

cf #7819 -- its a bug in ghc which will hopefully be fixed in the next 9.2.x release, but arguably its unclear if cabal should also do something on top of that

[Mikolaj]

Good news, the GHC fix has just been backported and merged to GHC 9.2.2 (to be released).

[Mikolaj]

It seems we don't need to do anything. Let's keep #7819 open until GHC 9.2.2 is released and possibly until somebody verifies it works.