init.lua/after/plugin/code-tools.lua

-- [[ Formatters Setup ]]
local conform = require("conform")

conform.setup({
	formatters_by_ft = {
		python = { "isort", "black" },
		lua = { "stylua" },
		sh = { "shfmt" },
		bash = { "shfmt" },
	},
})

-- only format with keybinding, don't like code chaning everytime I save
vim.keymap.set({ "n", "v" }, "<leader>vf", function()
	conform.format({
		lsp_fallback = true,
	})
end, { desc = "Format file or range (in visual mode)" })

-- [[ Linter's Setup ]]
local lint = require("lint")

-- fix mypy import's error
lint.linters.mypy.args = {
	function()
		local virtual = os.getenv("VIRTUAL_ENV") or os.getenv("CONDA_PREFIX") or "/usr"
		return "--python-executable", virtual .. "/bin/python3"
	end,
}

lint.linters_by_ft = {
	python = { "mypy", "ruff" },
}

-- setup auto linting
local lint_augroup = vim.api.nvim_create_augroup("lint", { clear = true })

vim.api.nvim_create_autocmd({ "BufEnter", "BufWritePost", "InsertLeave" }, {
	group = lint_augroup,
	callback = function()
		lint.try_lint()
	end,
})

-- [[ Mason Tools Installer ]]
local mason_tool_installer = require("mason-tool-installer")

mason_tool_installer.setup({
	ensure_installed = {
		"isort",
		"black",
		"stylua",
		"shfmt",
		"mypy",
		"ruff",
	},
})