return {
	-- install treesitter
	{
		"nvim-treesitter/nvim-treesitter",
		opts = function(_, opts)
			opts.ensure_installed = opts.ensure_installed or {}
			vim.list_extend(opts.ensure_installed, { "kotlin" })
		end,
	},
	{
		"williamboman/mason-lspconfig.nvim",
		opts = function(_, opts)
			opts.ensure_installed = opts.ensure_installed or {}
			vim.list_extend(opts.ensure_installed, { "kotlin_language_server" })
		end,
	},
	{
		"pojokcodeid/auto-conform.nvim",
		event = "VeryLazy",
		opts = function(_, opts)
			opts.formatters_by_ft = opts.formatters_by_ft or {}
			local package = "ktfmt"
			vim.list_extend(opts.ensure_installed, { package })
			opts.formatters_by_ft.kotlin = { package }
		end,
	},
	{
		"pojokcodeid/auto-lint.nvim",
		optional = true,
		opts = function(_, opts)
			opts.linters_by_ft = opts.linters_by_ft or {}
			vim.list_extend(opts.ensure_installed, { "ktlint" })
			opts.linters_by_ft.kotlin = { "ktlint" }
		end,
	},
	{
		"mason.nvim",
		opts = {
			ensure_installed = { "kotlin-debug-adapter" },
		},
	},
	{
		"rcarriga/nvim-dap-ui",
		lazy = true,
		event = "BufRead",
		dependencies = {
			{ "mfussenegger/nvim-dap", lazy = true },
			{ "nvim-neotest/nvim-nio", lazy = true },
		},
		opts = function()
			require("pcode.user.dapui")
			local dap = require("dap")
			if not dap.adapters.kotlin then
				dap.adapters.kotlin = {
					type = "executable",
					command = "kotlin-debug-adapter",
					options = { auto_continue_if_many_stopped = false },
				}
			end

			dap.configurations.kotlin = {
				{
					type = "kotlin",
					request = "launch",
					name = "This file",
					-- may differ, when in doubt, whatever your project structure may be,
					-- it has to correspond to the class file located at `build/classes/`
					-- and of course you have to build before you debug
					mainClass = function()
						local root = vim.uv.cwd()
						local fname = vim.api.nvim_buf_get_name(0)
						fname = fname:gsub(root, "")
						fname = fname:gsub("/app/src/main/kotlin/", "")
						fname = fname:gsub(".kt", "Kt"):gsub("/", ".")
						-- src/main/kotlin/websearch/Main.kt -> websearch.MainKt
						return fname
					end,
					projectRoot = "${workspaceFolder}",
					jsonLogFile = "",
					enableJsonLogging = false,
				},
				{
					-- Use this for unit tests
					-- First, run
					-- ./gradlew --info cleanTest test --debug-jvm
					-- then attach the debugger to it
					type = "kotlin",
					request = "attach",
					name = "Attach to debugging session",
					port = 5005,
					args = {},
					projectRoot = vim.fn.getcwd,
					hostName = "localhost",
					timeout = 2000,
				},
			}
		end,
		keys = {
			{ "<leader>d", "", desc = "  Debug" },
			{ "<leader>dt", "<cmd>lua require'dap'.toggle_breakpoint()<cr>", desc = "Toggle Breakpoint" },
			{ "<leader>db", "<cmd>lua require'dap'.step_back()<cr>", desc = "Step Back" },
			{ "<leader>dc", "<cmd>lua require'dap'.continue()<cr>", desc = "Continue" },
			{ "<leader>dC", "<cmd>lua require'dap'.run_to_cursor()<cr>", desc = "Run To Cursor" },
			{ "<leader>dd", "<cmd>lua require'dap'.disconnect()<cr>", desc = "Disconnect" },
			{ "<leader>dg", "<cmd>lua require'dap'.session()<cr>", desc = "Get Session" },
			{ "<leader>di", "<cmd>lua require'dap'.step_into()<cr>", desc = "Step Into" },
			{ "<leader>do", "<cmd>lua require'dap'.step_over()<cr>", desc = "Step Over" },
			{ "<leader>du", "<cmd>lua require'dap'.step_out()<cr>", desc = "Step Out" },
			{ "<leader>dp", "<cmd>lua require'dap'.pause()<cr>", desc = "Pause" },
			{ "<leader>dr", "<cmd>lua require'dap'.repl.toggle()<cr>", desc = "Toggle Repl" },
			{ "<leader>ds", "<cmd>lua require'dap'.continue()<cr>", desc = "Start" },
			{ "<leader>dq", "<cmd>lua require'dap'.close()<cr>", desc = "Quit" },
			{ "<leader>dU", "<cmd>lua require'dapui'.toggle({reset = true})<cr>", desc = "Toggle UI" },
			-- setting cek
			-- https://stackoverflow.com/questions/9356543/logging-while-testing-through-gradle
			{ "<leader>T", "", desc = " Test" },
			{ "<leader>Ta", "<cmd>terminal gradle test<cr>", desc = "Run All" },
			{
				"<leader>Tu",
				function()
					-- local current_word = vim.fn.expand("<cword>")
					local current_word = ""
					local input = vim.fn.getline(".")
					current_word = all_trim((input:gsub("class", "")):gsub("{", "")) -- hilangkan bagian class
					current_word = current_word:gsub("fun", "")
					current_word = current_word:gsub("%(%)", "")
					current_word = current_word:gsub("{", "")
					current_word = current_word:gsub("@Test", "")
					vim.cmd("terminal gradle test --tests *." .. all_trim(current_word))
				end,
				desc = "Run Under Cursor",
			},
			{ "<leader>rg", "<cmd>terminal<cr>gradle run<cr>", desc = "Run Gradle", mode = "n" },
		},
	},
}