{ pkgs, helpers, ... }:
{
  extraPackages = [ pkgs.ripgrep ];

  opts = {
    # Relative line numbers.
    number = true;
    relativenumber = true;

    # Set <Tab> to 2 spaces.
    expandtab = true;
    shiftwidth = 2;
    tabstop = 2;

    # Smart/auto indenting.
    shiftround = true;
    smartindent = true;
    breakindent = true;

    # Show matches while searching.
    hlsearch = true;
    incsearch = true;

    # Disable text wrap.
    wrap = true;

    # Better splitting.
    splitbelow = true;
    splitright = true;

    # Enable mouse mode.
    mouse = "a";

    # Smart handling of case when searching.
    ignorecase = true;
    smartcase = true;

    # Use Ripgrep for searching.
    grepprg = "rg --vimgrep";
    grepformat = "%f:%l:%c:%m";

    # Faster swap file saving.
    updatetime = 200;

    # Completion.
    completeopt = [
      "menu" 
      "menuone" 
      "noselect"
      "noinsert"
    ];

    # Persistent & bigger undo history.
    undofile = true;
    undolevels = 10000;

    # Enable 24-bit colors.
    termguicolors = true;

    # Always show the signcolumn to keep the text from shifting.
    signcolumn = "yes";

    # Highlight the current line.
    cursorline = true;

    # Fold settings.
    foldcolumn = "1";
    foldlevel = 99;
    foldenable = true;
    foldmethod = "expr";
    foldexpr = "v:lua.vim.treesitter.foldexpr()";

    # Always keep 4 lines above/below cursor.
    scrolloff = 4;

    # Max width.
    textwidth = 80;
    colorcolumn = "+1";

    # Show some invisible chars.
    list = true;
    listchars = {
      tab = "->";
      trail = "·";
    };

    # Only show a single status line instead of one for each window.
    laststatus = 3;

    # Preview subsitutions as you type.
    inccommand = "split";

    # Only set clipboard if not in SSH, to make sure the OSC 52
    # integration works automatically.
    clipboard = helpers.mkRaw # lua
      ''
        vim.env.SSH_TTY and "" or "unnamedplus"
      '';

    # Ask to save changes before exiting modified buffer.
    confirm = true;

    # I don't understand this but LazyVim sets it and it seems like a good idea.
    jumpoptions = "view";

    # Enable a little transparency for pop-ups.
    pumblend = 10;

    # Disable showing line/col numbers in statusline.
    ruler = false;

    # What to save when calling :mksession.
    sessionoptions = [
      "buffers"
      "curdir"
      "tabpages"
      "winsize"
      "help"
      "globals"
      "skiprtp"
      "folds"
    ];

    # Smoother left/right scrolling.
    sidescroll = 1;

    # Min columns to show to the left/right of cursor when side-scrolling.
    sidescrolloff = 8;

    # Languages to use for spelling suggestions.
    spelllang = [ "en" ];

    # Allow cursor to move where there is no text in visual block mode.
    virtualedit = "block";

    # Command mode completion mode.
    wildmode = [ "longest:full" "full" ];

    # Min window width when splitting.
    winminwidth = 5;
  };

  extraConfigLua = # lua
    ''
      -- Disable messages.
      vim.opt.shortmess:append({ W = true, I = true, c = true, C = true })
    '';
}