How do you make coc.nvim fail silently when the language server executable isn't on the path?

[briancarbone]

I use ephemeral development shells and if I open a .c file without clangd on the path, I don't want coc.nvim to complain; I just want it to fail silently. Is there a way to do this?

[chemzqm]

You can use g:coc_disable_uncaught_error which disable NodeJS errors shown in vim.

[briancarbone]

It's still printing this on startup even with that enabled.

[coc.nvim] c client: couldn't create connection to server.
Error: Launching server "languageserver.c" using command clangd failed.
    at <anonymous> (/nix/store/c3kgcap9mys7sv9gicq67xab3b7xmjd5-vimplugin-coc.nvim/build/index.js:1:1709998)
[coc.nvim] Server languageserver.c failed to start: Error: Launching server "languageserver.c" using command clangd failed.
Press ENTER or type command to continue

[chemzqm]

Use add "enable": false to configuration section of languageserver.c or use call coc#config('languageserver.c.enable', v:false) in your vimrc,

if !executable('clangd')
  call coc#config('languageserver.c.enable', v:false)
endif

[briancarbone]

I guess you can't do this because CoC loads asynchronously so the config will be empty.

var servers = coc#util#get_config('languageserver')
for [name, config] in items(servers)
  if index(config.filetypes, &ft) != -1 && !executable(config.command)
    coc#config($'languageserver.{name}.enable', false)
  endif
endfor

I tried putting it in an autocmd (CocNvimInit) but I think that is too late. Maybe a CocNvimInitConfig autocmd could be useful?

[chemzqm]

Configuration can be updated at any time, my suggestion is just use coc#config , or use coc-clangd

[briancarbone]

Right, but if I disable the "c" language server after it has already tried to establish a connection, it will still throw the error.

[chemzqm]

coc#config works before coc.nvim get start, coc#util#get_config could not.

[briancarbone]

Hmm, okay I don't think this is big issue. I think it would be nice if vimscript could react to the config, but this is just a feature request. Appreciate the help.