dont propose to restart ghc when not available

[teto]

Feature description

I have almost nothing in my global PATH and configure tooling on a per-project basis.
Only when entering nix develop I get my LSP, compilers etc.

One issue I have with haskell-tools is when if I open my projects for a quick look/edit without entering the nix-shell, I get this annoying popup "Failed to find the GHC version of this Cabal project."

This is bound to fail, I would prefer just a warning notification without the vim.ui.select call.
Not sure how to fix, just wanted to share my workflow.

[mrcjkb]

I think that's an error message from haskell-language-server?

haskell/haskell-language-server#3215

I don't call vim.lsp.start is haskell-language-server isn't found, but the behaviour if it fails to start is handled by Neovim.

Maybe there's an option in vim.lsp.start() to suppress retry prompts?

[teto]

Maybe it's just a neovim configuration issue but looks like there is something in the LSP protocol so reported here instead haskell/haskell-language-server#4006