simplify Julia config

[ChrHorn]

This simplifies the setup for the Julia language server. 
Also changes the standard indent to 4 spaces, which is recommended in the style guide. 
https://docs.julialang.org/en/v1/manual/style-guide/#Indentation

[archseer]

This seemed to be the recommended config that would properly detect the project dir, as well as set up the linter: https://github.com/julia-vscode/LanguageServer.jl/wiki/Vim-and-Neovim

[archseer]

The docs seem to be all over the place though, with README suggesting one version, and kakoune wiki another

[archseer]

And here's vscode https://github.com/julia-vscode/julia-vscode/blob/35bf7e853751bd87df12955fea4cb77327898ae8/scripts/languageserver/main.jl

[ChrHorn]

I think most of the wiki stuff is just outdated and runserver() is now the recommended option.

https://github.com/julia-vscode/LanguageServer.jl/blob/master/src/runserver.jl
runserver() should detect an exsting project dir automatically, linting is enabled by default.

At least for me everything seems to work fine with this setup.

[ChrHorn]

There seems to be an issue where I get different false positive lint messages for the new and old setup. VScode works fine. Need to dig a bit to see what's going on.

[ChrHorn]

Checked it again. Detection of local environments was broken with the old config, now everything should work as expected.

There are some false positives for both configs after the initial loading of a file, but they disappear after a save.

[archseer]

Looks good then 👍🏻

[Seelengrab]

Naively installing the julia language server as documented and launching helix with a julia file in a project does not start the language server for me successfully. I get the following error:

2022-09-08T09:16:18.926 helix_lsp::transport [ERROR] err <- "ERROR: ArgumentError: Package LanguageServer not found in current path.\n"
2022-09-08T09:16:18.926 helix_lsp::transport [ERROR] err <- "- Run `import Pkg; Pkg.add(\"LanguageServer\")` to install the LanguageServer package.\n"
2022-09-08T09:16:18.926 helix_lsp::transport [ERROR] err <- "Stacktrace:\n"
2022-09-08T09:16:18.926 helix_lsp::transport [ERROR] err <- " [1] macro expansion\n"
2022-09-08T09:16:18.926 helix_lsp::transport [ERROR] err <- "   @ ./loading.jl:1243 [inlined]\n"
2022-09-08T09:16:18.926 helix_lsp::transport [ERROR] err <- " [2] macro expansion\n"
2022-09-08T09:16:18.926 helix_lsp::transport [ERROR] err <- "   @ ./lock.jl:267 [inlined]\n"
2022-09-08T09:16:18.944 helix_lsp::transport [ERROR] err <- " [3] require(into::Module, mod::Symbol)\n"
2022-09-08T09:16:18.944 helix_lsp::transport [ERROR] err <- "   @ Base ./loading.jl:1224\n"
2022-09-08T09:16:18.956 helix_lsp::transport [ERROR] err: <- StreamClosed
2022-09-08T09:16:18.956 helix_lsp::transport [ERROR] err: <- StreamClosed

Which indicates to me that the language server specific environment mentioned in the documentation is not being picked up. I added LanguageServer to my main environment, thinking that may be solved by this, but then I get this:

2022-09-08T09:18:12.876 helix_term::application [ERROR] Timed out waiting for language servers to shutdown

What am I doing wrong?

[ChrHorn]

The install instructions seem to be old and copied from the neovim extension.

The helix script assumes that LanguageServer is installed in the global v1.x environment. Starting julia and then ]add LanguageServer should be enough to set it up.

[Seelengrab]

Thanks! That does make the errors go away and the logs do suggest the lsp is running, but helix still claims there's no language server, stating Language server not active for current buffer 🤔

[ChrHorn]

Do maybe get a timeout message in your logs? If so, try to increase your timeout by adding this to your languages.toml

[[language]]
name = "julia"
language-server = { command = "julia", timeout = 60, args = [
    "--startup-file=no",
    "--history-file=no",
    "--quiet",
    "-e",
    "using LanguageServer; runserver()",
    ]}

[Seelengrab]

That worked, thanks!