Setting language-server-specific settings

[aidalgol]

I am trying to migrate my lsp-mode setup to eglot, and I am held back by not finding any way to specify settings that are specific to the language server I am using (elixir-ls). I presently have (lsp-register-custom-settings '(("elixirLS.mixEnv" "dev"))) in my init, and I cannot figure out what the equivalent would be in eglot. The docstring for lsp-register-custom-settings is as follows:

(lsp-register-custom-settings PROPS)

Register PROPS.
PROPS is list of triple (path value boolean?) where PATH is the path to the
property; VALUE can be a literal value, symbol to be evaluated, or either a
function or lambda function to be called without arguments; BOOLEAN? is an
optional flag that should be non-nil for boolean settings, when it is nil the
property will be ignored if the VALUE is nil.

Example: ‘(lsp-register-custom-settings ’(("foo.bar.buzz.enabled" t t)))’
(note the double parentheses)

Does eglot provide an equivalent mechanism?

[johannesneyer]

I think the variable eglot-workspace-configuration is what you are looking for.

I have this in my init to configure pylsp:

(setq-default eglot-workspace-configuration
 '((pylsp                                  
    (plugins                               
     (jedi_completion (fuzzy . t))        
     (pydocstyle (enabled . t))))))        

[joaotavora]

This looks fine, but it is only one way to set the eglot-workspace-configuration variable. The README should have more examples.

[lakkiy]

(setq-default eglot-workspace-configuration
              '((gopls
                 (usePlaceholders . t))))

Works for go too.

[aidalgol]

So I finally got around to trying to switch to eglot again. This seems to be working, but is there any way I can query the workspace configuration to confirm?

(setq-default eglot-workspace-configuration
 '((eglot
    (mixenv . "dev"))))

[joaotavora]

Converted this to a discussion, as general questions are not what issues are for

[aidalgol]

Oh, sorry! I didn't realise GitHub had added a forum feature.