Cannot disable completion for a specified client

[przepompownia]

I use a language server for which I want to disable the most of capabilities (it's too slow on some projects). Currently it does not disable any capability given restricted set of capabilities on initialization.

I noticed that restricting client.resolved_capabilities within on_attach can also prevent from using some method of client but completion is an exception.

Shouldn't source:is_available() return false if self.client.resolved_capabilities.completion is false?

[Shougo]

You cannot use the config?
hrsh7th/nvim-cmp#822 (comment)

If so, it is the LSP server problem instead of nvim-cmp.
LSP server must support the capability.

[przepompownia]

Thanks, however I've seen before in source:is_available() that overriding server_capabilities.completionProvider can be another workaround (and works).

In general, what is "the proper way" to override the server capabilities (i.e. whether not checking resolved_capabilities.completion is correct)?

https://github.com/neovim/neovim/blob/a7c999523dbcbb91db56c6eb834034d448e9481c/runtime/lua/vim/lsp.lua#L1469-L1474
https://github.com/neovim/neovim/blob/a7c999523dbcbb91db56c6eb834034d448e9481c/runtime/lua/vim/lsp.lua#L966-L974

Independently, I have no doubt that this is a server problem in particular 😉

[hrsh7th]

See :h cmp-nvim-lsp