I’m trying to move from vscode to helix to save my RAM for Julia.
I’m on helix 25.07.01, julia 1.12.1. I haven’t configured anything except
$ cat ~/.config/helix/config.toml
theme = "autumn_night"
$ cat ~/.config/helix/languages.toml
[[language]]
name = "julia"
auto-format = true
If I open a julia file in helix I can see the language server is running
$ pgrep -laf julia
4072615 /usr/bin/julia --startup-file=no --history-file=no --quiet -e using LanguageServer; runserver()
and it’s doing its job: it knows about Julia keywords and types
But it’s unreliable around formatting.
It’s slow to format on the first save. It takes long enough that I can easily cancel it by changing the text. And it seems that if I am making lots of small changes and saving quickly, it never gets a chance to fully compile so it never formats my code.
The = button gives an error the first time I try to use it.
No configured language server supports range formatting
I have to wait, and then on the second time it works. This error is really confusing to me because it says “no support” but then a second later clearly there is support
If I press = multiple times in a row while it’s trying to figure itself out I’m able to lock the session up hard
Am I doing something wrong? neovim people, do you ever have these kinds of problems?
I’ve read the sysimage advice (repeated here and here). I tried
$ time julia --startup-file=no --project=@helix-lsp -e 'import Pkg; Pkg.add(["LanguageServer", "PackageCompiler", "JuliaFormatter"]); Pkg.update();using PackageCompiler; create_sysimage([:LanguageServer, :JuliaFormatter], sysimage_path=dirname(Pkg.Types.Context().env.project_file) * "/languageserver.so")'
I added this to language.toml:
[language-server.julia]
timeout = 60
command = "julia"
args = [
"--project=@helix-lsp",
"--startup-file=no",
"--history-file=no",
"--quiet",
"-J/home/kousu/.julia/environments/helix-lsp/languageserver.so",
"--sysimage-native-code=yes",
"-e",
""""
import Pkg
project_path = let
dirname(something(
Base.load_path_expand((
p = get(ENV, "JULIA_PROJECT", nothing);
isnothing(p) ? nothing : isempty(p) ? nothing : p
)),
Base.current_project(pwd()),
Pkg.Types.Context().env.project_file,
Base.active_project(),
))
end
ls_install_path = joinpath(get(DEPOT_PATH, 1, joinpath(homedir(), ".julia")), "environments", "helix-lsp");
pushfirst!(LOAD_PATH, ls_install_path);
using LanguageServer;
popfirst!(LOAD_PATH);
depot_path = get(ENV, "JULIA_DEPOT_PATH", "")
symbol_server_path = joinpath(homedir(), ".cache", "helix", "julia_lsp_symbol_server")
mkpath(symbol_server_path)
server = LanguageServer.LanguageServerIn`stance(stdin, stdout, project_path, depot_path, nothing, symbol_server_path, true)
server.runlinter = true
run(server)
"""
]
And I can see this is the version running now
$ pgrep -laf julia
23425 /usr/bin/julia --project=@helix-lsp --startup-file=no --history-file=no --quiet -J/home/kousu/.julia/environments/helix-lsp/languageserver.so --sysimage-native-code=yes -e " import Pkg project_path = let dirname(something( Base.load_path_expand(( p = get(ENV, "JULIA_PROJECT", nothing); isnothing(p) ? nothing : isempty(p) ? nothing : p )), Base.current_project(pwd()), Pkg.Types.Context().env.project_file, Base.active_project(), )) end ls_install_path = joinpath(get(DEPOT_PATH, 1, joinpath(homedir(), ".julia")), "environments", "helix-lsp"); pushfirst!(LOAD_PATH, ls_install_path); using LanguageServer; popfirst!(LOAD_PATH); depot_path = get(ENV, "JULIA_DEPOT_PATH", "") symbol_server_path = joinpath(homedir(), ".cache", "helix", "julia_lsp_symbol_server") mkpath(symbol_server_path) server = LanguageServer.LanguageServerInstance(stdin, stdout, project_path, depot_path, nothing, symbol_server_path, true) server.runlinter = true run(server)
But it’s still slow.
What am I doing wrong? How do I debug this (can I see a log of what the language server is loading?). How do I make it faster?
I just tried to see if vscode has the same first-load problem and it does. It won’t format my code until after it finished with this:
and then gives me this error about it crashing:
Once it gives that error, though, formatting is fast.
I hope so too.
. I’m just using