nvim/after/plugin/dap.lua

local dap = require("dap")
local dapui = require("dapui")

dapui.setup()

local sign = vim.fn.sign_define

sign("DapBreakpoint", { text = "●", texthl = "DapBreakpoint", linehl = "", numhl = ""})
sign("DapBreakpointCondition", { text = "●", texthl = "DapBreakpointCondition", linehl = "", numhl = ""})
sign("DapLogPoint", { text = "◆", texthl = "DapLogPoint", linehl = "", numhl = ""})

dap.listeners.after.event_initialized["dapui_config"] = function()
    dapui.open()
end
dap.listeners.before.event_terminated["dapui_config"] = function()
  dapui.close()
end
dap.listeners.before.event_exited["dapui_config"] = function()
  dapui.close()
end

vim.api.nvim_create_user_command("DapUIFloat", function (at)
    dapui.float_element(at.args)
end, {})