I've set up hie using all-hies on a NixOS system. Opening a Haskell file and explicitly invoking first direnv-mode and then lsp results in an error in *hie::stderr* saying it cannot find Cabal == 3.0.0.0.

Opening a terminal, changing to the directory and executing cabal --version, however, gives:

cabal-install version 3.0.0.0

I read about the direnv and lsp race condition, which is why I explicitly enabled direnv and then lsp, but to no avail.

How can I debug this further?