Description
Your environment
Ubuntu (under Windows 11 WSL)
ghc 9.4.2 via ghcup
Reproduction repo with minimal example:
https://github.com/JakobBruenker/plugin-test
Which LSP client (editor/plugin) do you use?
VS Code, but running haskell-language-server outside of it produces the same error
Which version of HLS do you use and how did you install it?
1.8.0.0 via ghcup
Have you configured HLS in any way (especially: a hie.yaml file)?
No (though an hie.yaml file generated via implicit-hie seemed to make no difference)
Steps to reproduce
Clone the reproduction repo linked above and run haskell-language-server inside just-some-project.
NB: Because of #3297, this does not work if you run HLS in the top-level directory plugin-test.
Expected behaviour
There should be no errors, since the plugin replaces puStrLn with putStrLn.
Actual behaviour
HSL shows the error
Variable not in scope: puStrLn :: String -> IO ()
Suggested fix: Perhaps use ‘putStrLn’ (imported from Prelude)
Even though the plugin changes the name to putStrLn, which means cabal run works just fine.
Strangely, I seem to remember doing something similar 6 months ago and it worked, but now I can't get it to work with 9.2 either, but it may have been a different kind of plugin.