Julia LSP in neovim 0.11

Tooling
,
1

Hello everyone,

Neovim 0.11 seems to have introduced some changes in the way lsp is configured, and it seems the julials install from Mason does not work out of the box at the moment (lsp quits returning 1 instead of 0, error log looks like nonsense).

I am currently using the following config, combining the new lsp setting with the instructions from here :

vim.lsp.config['julials'] = {
    cmd = { '' },
    filetypes = { 'julia' },
    root_markers = { 'Project.toml', 'Manifest.toml' },

    settings = {
        require'lspconfig'.julials.setup{
            on_new_config = function(new_config, _)
                local julia = vim.fn.expand("~/.julia/environments/lsp/")
                if require'lspconfig'.util.path.is_file(julia) then
                    new_config.cmd[1] = julia
                end
            end
        }
    }
}

, which seems to work, even though I barely understand how.
The only problem so far with this setup, is that it does not seem to use the local Project.toml, and I don’t get suggestions for packages defined in there.
Would there be a straightforward way to improve it?

Any advice would be very welcome.

3 Likes
2

Update: The following does the job;

vim.lsp.config('julials', {
    cmd = {
        "julia",
        "--project=".."~/.julia/environments/lsp/",
        "--startup-file=no",
        "--history-file=no",
        "-e", [[
            using Pkg
            Pkg.instantiate()
            using LanguageServer
        depot_path = get(ENV, "JULIA_DEPOT_PATH", "")
        project_path = let
            dirname(something(
                ## 1. Finds an explicitly set project (JULIA_PROJECT)
                Base.load_path_expand((
                    p = get(ENV, "JULIA_PROJECT", nothing);
                        p === nothing ? nothing : isempty(p) ? nothing : p
                    )),
                        ## 2. Look for a Project.toml file in the current working directory,
                        ##    or parent directories, with $HOME as an upper boundary
                        Base.current_project(),
                        ## 3. First entry in the load path
                        get(Base.load_path(), 1, nothing),
                        ## 4. Fallback to default global environment,
                        ##    this is more or less unreachable
                    Base.load_path_expand("@v#.#"),
                ))
            end
                    @info "Running language server" VERSION pwd() project_path depot_path
                    server = LanguageServer.LanguageServerInstance(stdin, stdout, project_path, depot_path)
        server.runlinter = true
            run(server)
        ]]
    },
    filetypes = { 'julia' },
    root_markers = { "Project.toml", "JuliaProject.toml" },
    settings = {}
})

More info here.

2 Likes
3

should this be updated in Vim and Neovim · julia-vscode/LanguageServer.jl Wiki · GitHub ?

1 Like
4

Might be a good idea to add some of the links in my posts above about the breaking changes in the newest release. Shall I do a PR?

1 Like