Config: How to disable stan plugin

[andys8]

Hey there, it's either currently not possible or I don't know how to exactly disable the stan plugin.

• Config is "stan": { "globalOn": false }
• Docs don't list stan plugin
• The default configuration (haskell-language-server-wrapper generate-default-config) doesn't have an entry for stan.

Is globalOn respected for this plugin?

Vim

Still enabled, but expected to be off

CLI

Still enabled, but expected to be off

Additional context

haskell-language-server-wrapper --probe-tools
haskell-language-server version: 1.8.0.0 (GHC: 9.2.4) (PATH: /home/andreas/.ghcup/bin/haskell-language-server-wrapper-1.8.0.0)
Tool versions found on the $PATH
cabal:          3.8.1.0
stack:          2.7.5
ghc:            9.2.4

Tool versions in your project
ghc:            8.10.7

[kokobd]

I'm not familiar with the dynamic config, but you can add --constraint "haskell-language-server -stan" to your cabal command if you were building HLS from source. In this way, stan plugin will be disabled at compile time.

[andys8]

I'm indeed compiling hls from scratch with ghcup compile hls and thanks for the hint. But I'm less interested in "fixing" this for me but to make sure configuration is working as expected for the project. Therefore I'm wondering if it can currently be disabled (like other plugins) and why it's missing in the documentation.

[pepeiborra]

Have you tried "haskell.plugin.span.globalOn": false ?

[andys8]

The config format would not be the format generate-default-config suggests, but I'm having trouble to find any variant of configuration that has an effect. I'm starting to have doubts regarding the whole editor configuration I'm using.

Could you point me to documentation showing how to configure Vim with Coc with plugin options?

• CoC's example has no options
• Haskell language server documentation has no options

---

[AnthonySuper]

I am also experiencing this issue.

COC config:

{
  "languageserver": {
    "haskell": {
      "command": "haskell-language-server-wrapper",
      "args": ["--lsp"],
      "rootPatterns": ["*.cabal", "stack.yaml", "cabal.project", "package.yaml", "hie.yaml"],
      "filetypes": ["haskell", "lhaskell"],
      "settings": {
        "languageServerHaskell": {
          "plugin": {
            "stan": {
              "globalOn": false
            }
          }
        }
      }
    }
  }
}

If I change it to:

{
  "languageserver": {
    "haskell": {
      "command": "haskell-language-server-wrapper",
      "args": ["--lsp"],
      "rootPatterns": ["*.cabal", "stack.yaml", "cabal.project", "package.yaml", "hie.yaml"],
      "filetypes": ["haskell", "lhaskell"],
      "settings": {
        "languageServerHaskell": {
          "plugin": {
            "stan": {
              "globalOn": false
            },
            "tactics": { "globalOn": false }
          }
        }
      }
    }
  }
}

Wingman is disabled. This suggests to me that the configuration is working, there's just no way to turn off stan.

The stan plugin also seems to be ignoring my .stan.toml file, for what it's worth.

[drewolson]

I'm experiencing the same issue -- no way to disable nor configure stan.

[pepeiborra]

Found the bug - Stan diagnostics should be gated in the same way that hlint are:

https://github.com/haskell/haskell-language-server/blob/master/plugins/hls-hlint-plugin/src/Ide/Plugin/Hlint.hs#L199-L205

[andys8]

Update: Not relevant for stan issue, but I figured out my configuration needed to switch to settings andys8/dotfiles@b2f5763

[michaelpj]

@uhbif19 can you take a look?

[uhbif19]

@michaelpj Will try to fix on weekend.

[andys8]

@uhbif19 @michaelpj Here is a suggestion for a fix that works for me: #3179

Documentation

• Adding stan to the plugin documentation: Docs: List stan plugin #3180
• Adding a more complete example showing how to configure plugins with CoC/Vim Configuration: more advanced Vim / Coc example (suggestion) #3181
• Same in CoC wiki

[andys8]

#3179 merged, configuration should now work.

[m4lvin]

How can I disable the stan plugin when using emacs with eglot?

Above it says "Config is "stan": { "globalOn": false }" but where does this configuration go? Is it a config for HLS or editor-specific?

Alternatively, how can I tell HLS to ignore specific stan hints? As @AnthonySuper says above, the .stan.toml seems to be ignored.

Sorry to resurrect this issue, but I could not find the relevant documentation and still have these problems with HLS 1.9.0.0.

[jhrcek]

I'm not that familiar with config. options, but what helped me was to build hls from source using ghcup with stan plugin disabled (https://www.haskell.org/ghcup/guide/#hls).
The -f-stan below is cabal flag which prevents stan plugin from being included in the final hls binary.

ghcup compile hls -g master --ghc 8.10.7 --cabal-update -- -f-stan

This assumes you're building hls to be used with ghc 8.10.7 (because AFAIK stan plugin only works with that version and is automatically disabled when building against more recent ghc versions)

[fendor]

but where does this configuration go?

I think this is HLS specific, so in some HLS config you should specify that

[andys8]

Because I had trouble figuring out how the options should look like for Vim, I added an example with options to the docs. For emacs there is none. So in case you're able to tinker and find out how plugins can be configured (it be quite similar to other emacs LS settings), it would be awesome to add a more detailed example to the docs afterwards.

[m4lvin]

Thank you all for the replies!

I now managed to disable stan in emacs with eglot, by putting the following in my ~/.emacs 🎉

(use-package eglot
  :ensure t
  :config
  (add-hook 'haskell-mode-hook 'eglot-ensure)
  :config
  (setq-default eglot-workspace-configuration
                '((haskell
                   (plugin
                    (stan
                     (globalOn . :json-false))))))
  )

In particular, then with M-x eglot-show-workspace-configuration one can see the JSON config that eglot will send to the language server. See https://joaotavora.github.io/eglot/#Customizing-Eglot

As for editing the docs: Currently the whole emacs section assumes that lsp-mode is used and not eglot. So before I make a suggestion how to add this, would it be good to have separate (sub)sections for Emacs with lsp and Emacs with eglot?

(As far as I know newer versions of emacs ship with eglot by default, and not with lsp-mode.)

[michaelpj]

I'd be happy to have a section on eglot. We just need an eglot user to write it, maybe that's you? :)