lldebugger not found

[MartyMcFlyInTheSky]

I've read this and the setup guide here on how to setup lua debugging in neovim (for my own neovim plugins). However I'm stuck, yet I can clearly pinpoint what the problem is. However I don't know how to solve it.

So my nvim-dap setup looks like this:

            -- Lua
            dap.adapters["local-lua"] = {
                type = "executable",
                command = "node",
                args = {
                    "/home/user/dev2/local-lua-debugger-vscode/extension/debugAdapter.js"
                },
                enrich_config = function(config, on_config)
                    if not config["extensionPath"] then
                        local c = vim.deepcopy(config)
                        -- 💀 If this is missing or wrong you'll see 
                        -- "module 'lldebugger' not found" errors in the dap-repl when trying to launch a debug session
                        c.extensionPath = "/home/user/dev2/local-lua-debugger-vscode/debugger/"
                        on_config(c)
                    else
                        on_config(config)
                    end
                end,
            }
            dap.configurations.lua = {
                {
                    name = 'current file (local-lua-dbg, nlua)',
                    type = 'local-lua',
                    request = 'launch',
                    cwd = '${workspaceFolder}',
                    program = {
                        lua = 'nlua.lua',
                        file = '${file}',
                    },
                    verbose = true,
                    args = {},
                },
            }

I've installed nlua (via luarocks) and hooked it up to /usr/bin via symlink (sudo ln -s ~/.luarocks/bin/nlua nlua.lua from /usr/bin). So that spins up nicely.

However, the issue is that apparently lldebugger can't be found. Of course I cloned [local-lua-debugger-vscode] (https://github.com/tomblind/local-lua-debugger-vscode#busted) which contains the respective lldebugger.lua file in it's ./debugger directory.

Funny enough the setup guide even mentions that if extensionPath is missing from the dap configuration it won't find lldebugger, but I'm sure the paths are matching.

From the dap.log from ./cache/nvim/dap.log I get the following error:

[DEBUG] 2025-03-08 13:44:26 dap/log.lua:118	3	{
  body = {
    category = "stderr",
    output = "E5113: Error while calling lua chunk: [string \"require('lldebugger').runFile([[/home/user/....\"]:1: module 'lldebugger' not found:\r\n\tno field package.preload['lldebugger']\r\n\tno file './lldebugger.lua'\r\n\tno file '/home/user/dev2/neovim/.deps/usr/share/luajit-2.1/lld"
  },
  event = "output",
  seq = 11,
  type = "event"
}

However when I launch nlua manually from the local-lua-debugger-vscode/debugger directory it does work:

(base) user@USR-0317:~/dev2/local-lua-debugger-vscode/debugger  master
 $ nlua.lua -e "require('lldebugger').runFile([[/home/user/.config/nvim/lua/custom/mymodule.lua]],true,{[-1]=[[nlua.lua]],[0]=[[/home/user/.config/nvim/lua/custom/mymodule.lua]], })"
@lldbg|{
  "threadId": 1,
  "message": "step",
  "type": "debugBreak",
  "tag": "$luaDebug",
  "breakType": "step"
}|lldbg@ 

My problem really just seems to be that the extensionPath setting seems to be completely ignored (however I don't really know what it does anyway, I suppose it puts that directory on lua modules path? What about the ./debugger subdirectory though where the actual lldebugger.lua lives?). So I would need a way to adapt the lua modules path for nlua it seems (not a lua expert). Or somehow give it context on where to find lldebugger. How do I do this?

NOTE: The debugger works corectly if I start nvim with local-lua-debugger-vscode/debugger as cwd. But of course I don't always want to change cwd to there when debugging my plugins...

[MartyMcFlyInTheSky]

I think I found the issue. Don't name your interpreter nlua.lua. I followed the official guide here and also set the extensionPath to the official settings of /home/user/dev2/local-lua-debugger-vscode/ (no /debugger at the end). These two changes made it work now.