Is there a way to specify the haskell-language-server executable used?

[youwen5]

Hi everyone, I'm pretty new to Haskell (and Nix), so sorry if this is a silly question.

I've been trying to set up a Hakyll site using this template. I got everything built and working, but when I actually open the code for editing, haskell-tools.nvim crashes. Upon reviewing the logs, this is likely because it calls haskell-language-server-wrapper, which tells it to run haskell-language-server from the installation handled by Mason, which can't pick up the local Haskell dependencies managed by Nix.

I managed to get it working in the meantime with a dirty hack (symlinking the nix store's executable to the Mason install location), but I'm hoping there's a much better way to do this. Checking the outputs of which haskell-language-server and which haskell-language-wrapper, I see that they are both in the nix store. Furthermore, running haskell-language-server-wrapper directly seems to be successful with no errors. However, haskell-tools seems to ignore the haskell-language-server executables provided by nix and directly use the system ones which fail.

Am I doing something wrong? How can I make this work with Nix?

[mrcjkb]

Yes, see :h haskell-tools.config and :h haskell-tools.lsp.ClientOpts 😄

[juarpr]

hello, :h HaskellLspClientOpts not working.
E149: Lo siento, no hay ayuda para "HaskellLspClientOpts"

[mrcjkb]

it's changed to haskell-tools.lsp.ClientOpts

[juarpr]

Se ha cambiado a haskell-tools.lsp.ClientOpts

Thanks a lot!