nvim-config/lua/myLuaConf/debug.lua

require('lze').load {
  {
    "nvim-dap",
    -- NOTE: I dont want to figure out mason tools installer for this, so I only enabled debug if nix loaded config
    for_cat = { cat = 'debug', default = false },
    -- cmd = { "" },
    -- event = "",
    -- ft = "",
    keys = {
      { "<F5>",      desc = "Debug: Start/Continue" },
      { "<F1>",      desc = "Debug: Step Into" },
      { "<F2>",      desc = "Debug: Step Over" },
      { "<F3>",      desc = "Debug: Step Out" },
      { "<leader>b", desc = "Debug: Toggle Breakpoint" },
      { "<leader>B", desc = "Debug: Set Breakpoint" },
      { "<F7>",      desc = "Debug: See last session result." },
    },
    load = (require('nixCatsUtils').isNixCats and function(name)
      vim.cmd.packadd(name)
      vim.cmd.packadd("nvim-dap-ui")
      vim.cmd.packadd("nvim-dap-virtual-text")
    end) or function(name)
      vim.cmd.packadd(name)
      vim.cmd.packadd("nvim-dap-ui")
      vim.cmd.packadd("nvim-dap-virtual-text")
      vim.cmd.packadd("mason-nvim-dap.nvim")
    end,
    after = function(plugin)
      local dap = require 'dap'
      local dapui = require 'dapui'
      require('telescope').load_extension('dap')

      -- Basic debugging keymaps, feel free to change to your liking!
      vim.keymap.set('n', '<F5>', dap.continue, { desc = 'Debug: Start/Continue' })
      vim.keymap.set('n', '<F1>', dap.step_into, { desc = 'Debug: Step Into' })
      vim.keymap.set('n', '<F2>', dap.step_over, { desc = 'Debug: Step Over' })
      vim.keymap.set('n', '<F3>', dap.step_out, { desc = 'Debug: Step Out' })
      vim.keymap.set('n', '<leader>b', dap.toggle_breakpoint, { desc = 'Debug: Toggle Breakpoint' })
      vim.keymap.set('n', '<leader>B', function()
        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.
      vim.keymap.set('n', '<F7>', dapui.toggle, { desc = 'Debug: See last session result.' })

      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

      -- 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 = '⏏',
          },
        },
      }

      require("nvim-dap-virtual-text").setup {
        enabled = true,                     -- enable this plugin (the default)
        enabled_commands = true,            -- create commands DapVirtualTextEnable, DapVirtualTextDisable, DapVirtualTextToggle, (DapVirtualTextForceRefresh for refreshing when debug adapter did not notify its termination)
        highlight_changed_variables = true, -- highlight changed values with NvimDapVirtualTextChanged, else always NvimDapVirtualText
        highlight_new_as_changed = false,   -- highlight new variables in the same way as changed variables (if highlight_changed_variables)
        show_stop_reason = true,            -- show stop reason when stopped for exceptions
        commented = false,                  -- prefix virtual text with comment string
        only_first_definition = true,       -- only show virtual text at first definition (if there are multiple)
        all_references = false,             -- show virtual text on all all references of the variable (not only definitions)
        clear_on_continue = false,          -- clear virtual text on "continue" (might cause flickering when stepping)
        --- A callback that determines how a variable is displayed or whether it should be omitted
        --- variable Variable https://microsoft.github.io/debug-adapter-protocol/specification#Types_Variable
        --- buf number
        --- stackframe dap.StackFrame https://microsoft.github.io/debug-adapter-protocol/specification#Types_StackFrame
        --- node userdata tree-sitter node identified as variable definition of reference (see `:h tsnode`)
        --- options nvim_dap_virtual_text_options Current options for nvim-dap-virtual-text
        --- string|nil A text how the virtual text should be displayed or nil, if this variable shouldn't be displayed
        display_callback = function(variable, buf, stackframe, node, options)
          if options.virt_text_pos == 'inline' then
            return ' = ' .. variable.value
          else
            return variable.name .. ' = ' .. variable.value
          end
        end,
        -- position of virtual text, see `:h nvim_buf_set_extmark()`, default tries to inline the virtual text. Use 'eol' to set to end of line
        virt_text_pos = vim.fn.has 'nvim-0.10' == 1 and 'inline' or 'eol',

        -- experimental features:
        all_frames = false,     -- show virtual text for all stack frames not only current. Only works for debugpy on my machine.
        virt_lines = false,     -- show virtual lines instead of virtual text (will flicker!)
        virt_text_win_col = nil -- position the virtual text at a fixed window column (starting from the first text column) ,
        -- e.g. 80 to position at column 80, see `:h nvim_buf_set_extmark()`
      }

      -- NOTE: Install lang specific config
      -- either in here, or in a separate plugin spec as demonstrated for go below.
    end,
  },

}