configuration.nix/nvim/nixvim.nix

{
  pkgs,
  lib,
  config,
  ...
} @ args: let
  cfg = config.jhome.nvim;
  hmAvailable = args ? hmConfig;
  nixosAvailable = args ? nixosConfig;
  darwinAvailable = args ? darwinConfig;
  canSetAsDefault = hmAvailable || nixosAvailable;
  notStandalone = hmAvailable || nixosAvailable || darwinAvailable;
in {
  imports = [./options.nix];

  config = lib.mkMerge [
    (lib.optionalAttrs canSetAsDefault {defaultEditor = lib.mkDefault true;})
    (lib.optionalAttrs notStandalone {enable = lib.mkDefault true;})
    (lib.mkIf cfg.enable {
      # package = pkgs.neovim;
      globals.mapleader = " ";
      # Appearance
      colorschemes.gruvbox = {
        enable = true;
        settings = {
          bold = true;
          transparent_mode = true;
          terminal_colors = true;
        };
      };

      opts = {
        number = true;
        relativenumber = true;
        colorcolumn = "+1";
        cursorline = true;
        wrap = false;
        splitright = true;
        # Tabs & indentation
        smarttab = true;
        autoindent = true;
        smartindent = true;
        # Search path
        path = ".,/usr/include,**";
        wildmenu = true;
        hlsearch = true;
        incsearch = true;
        ignorecase = true; # Search ignores cases
        smartcase = true; # Unless it has a capital letter
        # Enable local configuration :h 'exrc'
        exrc = true; # safe since nvim 0.9
      };
      plugins = import ./plugins.nix {inherit lib pkgs;};
      keymaps = import ./mappings.nix;
      inherit (import ./augroups.nix) autoGroups autoCmd;
      extraPlugins = let
        plugins = pkgs.vimPlugins;
        jjdescription = pkgs.callPackage ./vim-jjdescription.nix {};
      in [
        plugins.nui-nvim
        plugins.nvim-web-devicons
        jjdescription
      ];
      # Formatting
      extraPackages = [
        pkgs.stylua
        pkgs.shfmt
        pkgs.taplo
        pkgs.yamlfmt
        pkgs.nixpkgs-fmt
        pkgs.alejandra
        pkgs.nixfmt-classic
        pkgs.luajitPackages.jsregexp
      ];
      extraConfigLuaPre = ''
        -- Lua Pre Config
        if vim.fn.has 'termguicolors' then
          -- Enable RGB colors
          vim.g.termguicolors = true
        end

        -- Useful function
        local has_words_before = function()
          -- unpack = unpack or table.unpack
          local line, col = unpack(vim.api.nvim_win_get_cursor(0))
          return col ~= 0
            and vim.api.nvim_buf_get_lines(0, line - 1, line, true)[1]:sub(col, col):match '%s' == nil
        end
        -- END: Lua Pre Config
      '';
    })
  ];
}