Unable to debug code when launch.json is present

[phenpessoa]

I'm not sure if I'm doing something wrongly here, but I'm unable to debug my code if launch.json is present. If there is no launch.json file, then I can debug just fine.

I place my cursor on my main function, and simply run :GoDebug. It works. However, if I run :GoDbgConfig, which creates the launch.json file and then try to run :GoDebug again on the main function, I get the following error:

no test file found for /home/phenpessoa/dev/nubank/takehome/cmd/main_test.go
Error executing Lua callback: ...phenpessoa/.local/share/nvim/lazy/go.nvim/lua/go/dap.lua:571: attempt to call field 'go_select' (a nil value)
stack traceback:
        ...phenpessoa/.local/share/nvim/lazy/go.nvim/lua/go/dap.lua:571: in function 'run'
        ...essoa/.local/share/nvim/lazy/go.nvim/lua/go/commands.lua:62: in function <...essoa/.local/share/nvim/lazy/go.nvim/lua/go/commands.lua:57>

I didn't change anything in the launch.json file. I'm testing it with just how it comes from :GoDbgConfig.

{
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Launch package",
            "type": "go",
            "request": "launch",
            "mode": "auto",
            "remotePath": "",
            "port": 38697,
            "host": "127.0.0.1",
            "program": "${workspaceFolder}",
            "env": {
            },
            "args": [],
            "cwd": "${workspaceFolder}",
            "envFile": "${workspaceFolder}/.env",
            "buildFlags":""
        },
        {
            "name": "Debug current package",
            "type": "go",
            "request": "launch",
            "mode": "debug",
            "remotePath": "",
            "port": 38697,
            "host": "127.0.0.1",
            "program": "${fileDirname}",
            "env": {
            },
            "args": [],
            "cwd": "${workspaceFolder}",
            "envFile": "${workspaceFolder}/.env",
            "buildFlags":""
        },
        {
            "name": "Launch test function",
            "type": "go",
            "request": "launch",
            "mode": "test",
            "program": "${workspaceFolder}",
            "args": [
                "-test.run",
                "MyTestFunction"
            ]
        },
        {
            "name": "Attach main",
            "type": "go",
            "request": "attach",
            "mode": "debug",
            "remotePath": "",
            "port": 38697,
            "host": "127.0.0.1",
            "program": "${workspaceFolder}/main.go",
            "env": {
            },
            "args": [],
            "cwd": "${workspaceFolder}",
            "processId":"",
            "envFile": "${workspaceFolder}/.env",
            "buildFlags":""
        },
        {
            "name": "Attach to Process",
            "type": "go",
            "request": "attach",
            "mode": "local",
            "processId": 0
        },
        {
            "name": "Launch file",
            "type": "go",
            "request": "launch",
            "mode": "debug",
            "program": "${file}"
        }
    ]
}

If I delete the launch.json file I'm able to debug my code again. Any help will be greatly appreciated, thanks.

Neovim version:

NVIM v0.10.2
Build type: Release
LuaJIT 2.1.1713484068

My config:

return {
    {
        "ray-x/go.nvim",
        dependencies = { -- optional packages
            "ray-x/guihua.lua",
            "neovim/nvim-lspconfig",
            "nvim-treesitter/nvim-treesitter",
        },
        config = function()
            require("go").setup({
                tag_options = "",
            })
        end,
        event = { "CmdlineEnter" },
        ft = { "go", "gomod" },
        build = ':lua require("go.install").update_all_sync()',
        keys = {
            {
                "<leader>gsj",
                "<cmd> GoAddTag json <CR>",
                desc = "Add json struct tags",
            },
            {
                "<leader>gsy",
                "<cmd> GoAddTag yaml <CR>",
                desc = "Add yaml struct tags",
            },
            {
                "<leader>gfs",
                "<cmd> GoFillStruct <cr>",
                desc = "Go Fill Struct",
            },
        },
    },
}

I'm running commit 3ea80d7.

[ray-x]

Thanks for reporting this issue. Pushed a fix addressing this. Pls give it a try. Thx!

[phenpessoa]

Thanks @ray-x !

I tested the latest commit and now I'm getting a different error:

Error executing Lua callback: ...soa/.local/share/nvim/lazy/guihua.lua/lua/guihua/gui.lua:243: on_choice: expected function, got nil
stack traceback:
        [C]: in function 'error'
        vim/shared.lua: in function 'validate'
        ...soa/.local/share/nvim/lazy/guihua.lua/lua/guihua/gui.lua:243: in function 'select'
        ...phenpessoa/.local/share/nvim/lazy/go.nvim/lua/go/dap.lua:571: in function 'run'
        ...essoa/.local/share/nvim/lazy/go.nvim/lua/go/commands.lua:62: in function <...essoa/.local/share/nvim/lazy/go.nvim/lua/go/commands.lua:57>

[ray-x]

The issue should be gone now. Could you give it another try? Thx!

[phenpessoa]

@ray-x This is still erroring out for me. I get this error now:

E5108: Error executing lua: ...e/phenpessoa/.local/share/nvim/lazy/nvim-dap/lua/dap.lua:566: dap.run() must be called with a valid configuration, got nil
stack traceback:
        [C]: in function 'assert'
        ...e/phenpessoa/.local/share/nvim/lazy/nvim-dap/lua/dap.lua:566: in function 'run'
        ...phenpessoa/.local/share/nvim/lazy/go.nvim/lua/go/dap.lua:572: in function 'on_confirm'
        ...l/share/nvim/lazy/guihua.lua/lua/guihua/listviewctrl.lua:485: in function 'on_confirm'
        ...l/share/nvim/lazy/guihua.lua/lua/guihua/listviewctrl.lua:110: in function <...l/share/nvim/lazy/guihua.lua/lua/guihua/listviewctrl.lua:110>

But I think I found the issue. If I change these lines (./lua/go/dap.lua 571-573):

vim.ui.select(launch_names, { prompt = 'which you would like to debug' }, function(index)
        dap.run(dap.configurations.go[index])
end)

To this:

  vim.ui.select(launch_names, { prompt = 'which you would like to debug' }, function(name)
    local index = 0
    for i, c in ipairs(dap.configurations.go) do
      if c.name == name then
        index = i
        break
      end
    end
    dap.run(dap.configurations.go[index])
  end)

The issue is fixed and I'm able to debug. However I'm not sure if this is the best solution.

[ray-x]

Thanks for the update. the select should accept idx as parameter. there is something wrong with guihua implementation. Please update both go.nvim and guihua.lua. It should work without your hack.

[phenpessoa]

Thanks! Can confirm that with the latest version of guihua and go.nvim the error is gone. I'm able to debug fine now! :tada:

[ray-x]

Cheers!