nvim-lua.kickstart.nvim/lua/kickstart/plugins/debug.lua

-- debug.lua
--
-- Shows how to use the DAP plugin to debug your code.
--
-- Primarily focused on configuring the debugger for Go, but can
-- be extended to other languages as well. That's why it's called
-- kickstart.nvim and not kitchen-sink.nvim ;)

return {
  -- NOTE: Yes, you can install new plugins here!
  'mfussenegger/nvim-dap',
  -- NOTE: And you can specify dependencies as well
  dependencies = {
    -- Creates a beautiful debugger UI
    'rcarriga/nvim-dap-ui',

    -- Required dependency for nvim-dap-ui
    'nvim-neotest/nvim-nio',

    -- Installs the debug adapters for you
    'williamboman/mason.nvim',
    'jay-babu/mason-nvim-dap.nvim',

    -- Add your own debuggers here
    'leoluz/nvim-dap-go',
    'mfussenegger/nvim-dap-python',
    'theHamsta/nvim-dap-virtual-text',
  },
  keys = {
    -- Basic debugging keymaps, feel free to change to your liking!
    {
      'g@',
      function()
        require('dap').continue()
      end,
      desc = 'Debug: Start/Continue',
    },
    {
      '<F1>',
      function()
        require('dap').step_into()
      end,
      desc = 'Debug: Step Into',
    },
    {
      '<F2>',
      function()
        require('dap').step_over()
      end,
      desc = 'Debug: Step Over',
    },
    {
      '<F3>',
      function()
        require('dap').step_out()
      end,
      desc = 'Debug: Step Out',
    },
    {
      '<leader>.',
      function()
        require('dap').toggle_breakpoint()
      end,
      desc = 'Debug: Toggle Breakpoint',
    },
    {
      '<leader>B',
      function()
        require('dap').set_breakpoint(vim.fn.input 'Breakpoint condition: ')
      end,
      desc = 'Debug: Set Breakpoint',
    },
    -- Toggle to see last session result. Without this, you can't see session output in case of unhandled exception.
    {
      '<F7>',
      function()
        require('dapui').toggle()
      end,
      desc = 'Debug: See last session result.',
    },
  },
  config = function()
    local dap = require 'dap'
    local dapui = require 'dapui'

    require('mason-nvim-dap').setup {
      -- Makes a best effort to setup the various debuggers with
      -- reasonable debug configurations
      automatic_installation = true,

      -- You can provide additional configuration to the handlers,
      -- see mason-nvim-dap README for more information
      handlers = {},

      -- You'll need to check that you have the required things installed
      -- online, please don't ask me how to install them :)
      ensure_installed = {
        -- Update this to ensure that you have the debuggers for the langs you want
        'delve',
        'debugpy', -- Python debugger
      },
    }

    -- Dap UI setup
    -- For more information, see |:help nvim-dap-ui|
    dapui.setup {
      -- Set icons to characters that are more likely to work in every terminal.
      --    Feel free to remove or use ones that you like more! :)
      --    Don't feel like these are good choices.
      icons = { expanded = '▾', collapsed = '▸', current_frame = '*' },
      controls = {
        icons = {
          pause = '⏸',
          play = '▶',
          step_into = '⏎',
          step_over = '⏭',
          step_out = '⏮',
          step_back = 'b',
          run_last = '▶▶',
          terminate = '⏹',
          disconnect = '⏏',
        },
      },
    }

    dap.listeners.after.event_initialized['dapui_config'] = dapui.open
    dap.listeners.before.event_terminated['dapui_config'] = dapui.close
    dap.listeners.before.event_exited['dapui_config'] = dapui.close

    -- Install golang specific config
    require('dap-go').setup {
      delve = {
        -- On Windows delve must be run attached or it crashes.
        -- See https://github.com/leoluz/nvim-dap-go/blob/main/README.md\#configuring
        detached = vim.fn.has 'win32' == 0,
      },
    }

    -- Python configuration
    require('dap-python').setup('python')
    require('dap-python').test_runner = 'pytest'
    
    -- Initialize the Python configuration table if it doesn't exist
    dap.configurations.python = dap.configurations.python or {
  {
    -- The first three options are required by nvim-dap
    type = 'python'; -- the type here established the link to the adapter definition: `dap.adapters.python`
    request = 'launch';
    name = "Launch file";

    -- Options below are for debugpy, see https://github.com/microsoft/debugpy/wiki/Debug-configuration-settings for supported options

    program = "${file}"; -- This configuration will launch the current file if used.
    pythonPath = function()
      -- debugpy supports launching an application with a different interpreter then the one used to launch debugpy itself.
      -- The code below looks for a `venv` or `.venv` folder in the current directly and uses the python within.
      -- You could adapt this - to for example use the `VIRTUAL_ENV` environment variable.
      local cwd = vim.fn.getcwd()
      if vim.fn.executable(cwd .. '/venv/bin/python') == 1 then
        return cwd .. '/venv/bin/python'
      elseif vim.fn.executable(cwd .. '/.venv/bin/python') == 1 then
        return cwd .. '/.venv/bin/python'
      else
        return '/usr/bin/python'
      end
    end;
  },
}
    
    -- Add a basic Python configuration if none exists
    -- if #dap.configurations.python == 0 then
    --   table.insert(dap.configurations.python, {
    --     type = 'python',
    --     request = 'launch',
    --     name = 'Launch file',
    --     program = '${file}',
    --     pythonPath = 'python'
    --   })
    -- end
  end,
}