Helix Configuration

[nyonson]

I poked around the documentation a bit, but not sure I saw any definitive examples for Helix configuration. I have a the bare-minimum working below in my Helix languages.toml:

[language-server.harper-ls]
args = ["--stdio"]
command = "harper-ls"

It wasn't obvious to me that the --stdio flag should be used and that it must go in the separate args key.

With that said, any recommendations for best settings beyond that? I think I want to add some sort of de-bouncer setting since this is firing way to often as I type, but not clear to me yet the best spot to put that.

[novusnota]

@nyonson It is possible to use all the same settings as shown here for Neovim, but in Helix. You'll only need to wrap all the configuration options there under the harper-ls key in TOML dictionary.

Here's an example of how it currently works:

[language-server.harper-ls]
args = ["--stdio"]
command = "harper-ls"
# notice the key:
config = { harper-ls = { diagnosticSeverity = "error", linters = { long_sentences = false } } }

That config makes all the diagnostics appear as errors instead of hints (which is the default), and also disables the long sentences lint. Unfortunately, there's no debouncing or similar config option yet.

[elijah-potter]

From my understanding of the language server protocol, servers are not supposed to perform debouncing. That is the responsibility of the editor. I'm not sure Helix supports that though, as I've honestly never used it.

[nyonson]

FWIW I am running helix version 24.07 these days and it is pretty smooth, so I am not going to worry about any other settings. I think there might have been some LSP performance issues with 24.03 which I might have been running a few weeks ago.