How can I uses lazydev without lspconfig?

[Charlie-83]

Docs just say

If you don't use nvim-lspconfig, then you can use require('lazydev').find_workspace(buf?) to check if the buffer is part of an existing workspace or its libraries.

But I don't know what this is actually instructing me to do. @folke clarified this is only for custom workspaces which I currently don't need

I use this autocommand to start lua-ls

autocmd("FileType", {
    pattern = "lua",
    callback = function()
        local root_dir = vim.fs.dirname(vim.fs.find({ "lazy-lock.json" })[1])
        local client = vim.lsp.start({
            name = "lua-ls",
            cmd = { "lua-language-server" },
            root_dir = root_dir,
        })
        vim.lsp.buf_attach_client(0, client)
    end,
})

I am using Lazy as my plugin manager and have

    {
        "folke/lazydev.nvim",
        ft = "lua",
        config = true,
    },

Currently, it isn't working and I'm getting warnings on all my vim.api... etc

[folke]

lazydev manages your workspaces, so you need to have a workspace.
If you don't want to use lspconfig, then that's of course fine, but then I'd expect you to know how to handle workspaces on your own.

[Charlie-83]

Could never work this out. I ended up adding

settings = {
    Lua = {
        workspace = {
            library = vim.api.nvim_get_runtime_file("", true)
        }
    }
}

to the vim.lsp.start call rather than using this plugin

[Jaehaks]

@Charlie-83

lazydev.nvim accepts lua_ls as lua server name now, Please check your lsp name using vim.lsp.config()
for exmaple, line 13 in lsp.lua of lazy.nvim is like this

---@param client? vim.lsp.Client
function M.supports(client)
  return client and vim.tbl_contains({ "lua_ls", "emmylua-analyzer-rust" }, client.name)
end

If you add the lua lsp name what you set, the lazydev works
I set the configuration name of lua as lua-ls because neovim cannot accept underscore(_) in lsp name and recommand luals as lsp name of lua.
so I changed the chunk like this

---@param client? vim.lsp.Client
function M.supports(client)
  return client and vim.tbl_contains({ "lua-ls", "emmylua-analyzer-rust" }, client.name)
end

and lazydev works.
Without empty workspace field of lua lsp configuraiton, lazydev.nvim inserts the VIMRUNTIME and necessary required libraries what your lua file contains.

[appleseedexm]

I can confirm the underlying issue described by @Jaehaks, and I wonder why there's not more information about this behaviour since this cant be the first time this happened.
However, since neovim 0.12.0 (probably even before that) lsps with _ (underscore) are supported. Renaming my lua-language-server to lua_ls fixed this. I wished there was some documentation for it though, or better, a property to set the language server name.

[yorgetsuten]

I can confirm the underlying issue described by @Jaehaks, and I wonder why there's not more information about this behaviour since this cant be the first time this happened.

Unfortunately, this is the situation with many plugins by @folke. They are so poorly documented that using them requires reading the source code to make something work.

[keelefi]

Thank you so much for this @appleseedexm ! I would never in a million years have figured out that the steps needed to fix my config was to rename the LSP from luals to lua_ls.

Especially since blogs like lsp-zero.nvim suggest you should create the file lsp/luals.lua instead of lsp/lua_ls.lua.

[Miyelsh]

I was able to get lazydev installed without LazyVim or lspconfig with the following:

lazydev.nvim cloned into ~/.config/nvim/pack/default/start/

Configuring the LSP in init.lua:

vim.api.nvim_create_autocmd("FileType", {
        pattern = "lua"
        , callback = function(args)
            vim.lsp.start({
                name = "lua-ls",
                cmd = {"lua-language-server"},
                root_dir = vim.fs.root(args.buf, "init.lua"),
                settings = {
                    Lua = {
                        workspace = {
                            library = vim.api.nvim_get_runtime_file("", true)
                        }
                    },
                }
            })
        end,
    }
)