`runtime.version` isn't applied from `.luarc.json`

How are you using the lua-language-server?

NeoVim

Which OS are you using?

Linux

What is the issue affecting?

Completion

Expected Behaviour

It should look up definitions for LuaJIT (Lua 5.1).

Actual Behaviour

It looks up definitions for Lua 5.4.

Reproduction steps

1. Having the following .luarc.json in a project:

{
  "$schema": "https://raw.githubusercontent.com/sumneko/vscode-lua/master/setting/schema.json",
  "diagnostics": {
    "globals": [ "after_each", "before_each", "describe", "it", "vim" ],
    "disable": [ "redefined-local" ]
  },
  "runtime": {
    "version": "LuaJIT"
  },
  "workspace": {
    "library": [
      "$VIMRUNTIME"
    ],
    "checkThirdParty": false
  }
}

2. Open Neovim and edit a .lua file
3. Go to definition for any standard library function
4. Notice the version of the standard library used

Additional Notes

I'm using Neovim v0.10.1 with the native LSP.

I can reproduce this with a very simple config (no settings):

    lspconfig.lua_ls.setup({})

One important thing to mention is that other settings like diagnostics are properly applied.

Log File

file_home_ignacio_devel_projects_plantuml.nvim.log

.luarc.json の設定と最小限のエントリーポイント lspconfig.lua_ls.setup({}) から始め、動作している diagnostics 設定と比較しながら runtime.version がどのように読み込まれるかを追跡します。LuaJIT を使って Neovim で補完または定義への移動を再現し、標準ライブラリの定義が Lua 5.4 ではなく Lua 5.1 を使用するようになった時点で、問題が解決したとみなします。