Neovim 0.11 config in 180 lines

init.lua

-- -----------------------------------------------------------------------------------------------
-- General configuration
-- -----------------------------------------------------------------------------------------------
-- Basic settings
vim.opt.hlsearch = true
vim.opt.number = true
vim.opt.mouse = "a"
vim.opt.showmode = false
vim.opt.spelllang = "en_gb"
vim.opt.title = true
vim.opt.titlestring = "nvim"

-- Leader (this is here so plugins etc pick it up)
vim.g.mapleader = ","  -- anywhere you see <leader> = hit ,

-- use nvim-tree instead
vim.g.loaded_netrw = 1
vim.g.loaded_netrwPlugin = 1

-- Use system clipboard
vim.opt.clipboard:append({ "unnamed", "unnamedplus" })

-- Display settings
vim.opt.termguicolors = true
vim.o.background = "light" -- set to "dark" for dark theme

-- Scrolling and UI settings
vim.opt.cursorline = true
vim.opt.cursorcolumn = true
vim.opt.signcolumn = 'yes'
vim.opt.wrap = false
vim.opt.sidescrolloff = 8
vim.opt.scrolloff = 8

-- Persist undo (persists your undo history between sessions)
vim.opt.undodir = vim.fn.stdpath("cache") .. "/undo"
vim.opt.undofile = true

-- Tab stuff
vim.opt.tabstop = 2
vim.opt.shiftwidth = 2
vim.opt.expandtab = true
vim.opt.autoindent = true

-- Search configuration
vim.opt.ignorecase = true
vim.opt.smartcase = true
vim.opt.gdefault = true

-- open new split panes to right and below (as you probably expect)
vim.opt.splitright = true
vim.opt.splitbelow = true

-- LSP
vim.lsp.inlay_hint.enable(true)

-- -----------------------------------------------------------------------------------------------
-- Plugin list
-- -----------------------------------------------------------------------------------------------
local plugins = {
  { "nvim-lua/plenary.nvim" },                             -- used by several other plugins
  { "ellisonleao/gruvbox.nvim" },                          -- Gruvbox theme (feel free to choose another!)
  { "nvim-tree/nvim-web-devicons",         lazy = true },  -- used by lualine and nvim-tree
  { "nvim-lualine/lualine.nvim" },                         -- Status line
  { "nvim-tree/nvim-tree.lua" },                           -- File browser

  -- Telescope command menu
  { "nvim-telescope/telescope.nvim" },
  { "nvim-telescope/telescope-fzf-native.nvim", build = "make" },
  
  -- TreeSitter
  { "nvim-treesitter/nvim-treesitter",          priority = 1000, build = ":TSUpdate" },
  
  -- LSP
  { 'mason-org/mason.nvim' },                      -- installs LSP servers
  { 'neovim/nvim-lspconfig' },                     -- configures LSPs
  { 'mason-org/mason-lspconfig.nvim' },            -- links installed to configured
  { 'stevearc/conform.nvim' },                     -- Formatting where the LSP doesn't

  {
    'saghen/blink.cmp',                           -- Blink completion tool (LSP, snippets etc)
    version = '1.*',                              -- see keymap here:
    opts_extend = { "sources.default" }           -- https://cmp.saghen.dev/configuration/keymap.html#default
  },
}

-- -----------------------------------------------------------------------------------------------
-- Plugin installation
-- -----------------------------------------------------------------------------------------------
local lazypath = vim.fn.stdpath("data") .. "/lazy/lazy.nvim"
if not vim.loop.fs_stat(lazypath) then
  vim.fn.system({
    "git", "clone", "--filter=blob:none",
    "https://github.com/folke/lazy.nvim.git",
    "--branch=stable", lazypath,
  })
end
vim.opt.rtp:prepend(lazypath)
require("lazy").setup(plugins)

-- -----------------------------------------------------------------------------------------------
-- Plugin config
-- -----------------------------------------------------------------------------------------------
vim.cmd.colorscheme("gruvbox")  -- activate the theme
require("lualine").setup()      -- the status line
require("nvim-tree").setup()    -- the tree file browser panel
require("telescope").setup()    -- command menu

-- -----------------------------------------------------------------------------------------------
-- Treesitter (syntax highlighting and related stuff!)
-- -----------------------------------------------------------------------------------------------
-- NB: Make sure to add more from this list!
-- https://github.com/nvim-treesitter/nvim-treesitter/tree/master#supported-languages
require("nvim-treesitter.configs").setup({
  ensure_installed = { "typescript", "python", "rust", "go" },
  sync_install = false,
  auto_install = true,
  highlight = { enable = true, },
})
vim.opt.foldmethod = "expr"
vim.opt.foldexpr = "nvim_treesitter#foldexpr()"
vim.opt.foldlevel = 99

-- -----------------------------------------------------------------------------------------------
-- LSP
-- -----------------------------------------------------------------------------------------------
-- NB: These will FAIL if you don't have the language toolchains installed!
-- NB: Make sure to add more from this list!
-- https://github.com/neovim/nvim-lspconfig/blob/master/doc/configs.md
require("mason").setup()
require("mason-lspconfig").setup({ ensure_installed = { "ruff", "basedpyright",  "eslint" } })

require("conform").setup({
  default_format_opts = { lsp_format = "fallback" },  -- Many languages can be formatted directly by their LSP
  formatters_by_ft = {                                -- but some can't, so conform is for those ones
    javascript = { "prettier" },      javascriptreact = { "prettier" }, typescript = { "prettier" },
    typescriptreact = { "prettier" }, json = { "prettier" },            html = { "prettier" },
    css = { "prettier" },
  },
})

-- -----------------------------------------------------------------------------------------------
-- Keymap settings
-- -----------------------------------------------------------------------------------------------
-- Basic keys
vim.keymap.set("n", "<space>", ":")  -- hit <space> to start a command, quicker than :
vim.keymap.set("n", "q", "<C-r>")    -- "u" is undo, I map "q" to redo

-- Search navigation
-- n is always forward, N is always backward
-- ' is now forward and ; is backward
vim.keymap.set("n", "n", "v:searchforward ? 'n' : 'N'", { expr = true })
vim.keymap.set("n", "N", "v:searchforward ? 'N' : 'n'", { expr = true })
vim.keymap.set({ "n", "v" }, ";", "getcharsearch().forward ? ',' : ';'", { expr = true })
vim.keymap.set({ "n", "v" }, "'", "getcharsearch().forward ? ';' : ','", { expr = true })

-- toggle line numbers and wrap
vim.keymap.set("n", "<leader>n", ":set nonumber! relativenumber!<CR>")
vim.keymap.set("n", "<leader>w", ":set wrap! wrap?<CR>")

-- Moving between splits and resizing
vim.keymap.set("n", "<C-j>", "<C-W><C-J>")  -- use Ctrl-j (and so on) to move between splits
vim.keymap.set("n", "<C-k>", "<C-W><C-K>")
vim.keymap.set("n", "<C-l>", "<C-W><C-L>")
vim.keymap.set("n", "<C-H>", "<C-W><C-H>")

-- nvim-tree (file browser settings)
vim.keymap.set("n", "<C-t>", ":NvimTreeFocus<CR>")
vim.keymap.set("n", "<C-f>", ":NvimTreeFindFile<CR>")
vim.keymap.set("n", "<C-c>", ":NvimTreeClose<CR>")

-- Formatting
vim.keymap.set("n", "<leader>fo", require('conform').format)

local tele_builtin = require("telescope.builtin")
vim.keymap.set("n", "<leader>ff", tele_builtin.git_files, {})  -- ,ff to find git files
vim.keymap.set("n", "<leader>fa", tele_builtin.find_files, {}) -- ,fa to find any files
vim.keymap.set("n", "<leader>fg", tele_builtin.live_grep, {})  -- ,fg to ripgrep
vim.keymap.set("n", "<leader>fb", tele_builtin.buffers, {})    -- ,fb to see recent buffers
vim.keymap.set("n", "<leader>fh", tele_builtin.help_tags, {})  -- ,fh to search help