nixos-config/modules/editors/nvim/default.nix

#
# Neovim
#

{ pkgs, ... }:

{
  programs = {
    neovim = {
      enable = true;
      viAlias = true;
      vimAlias = true;
      vimdiffAlias = true;
      #withNodeJS = true;

      plugins = with pkgs.vimPlugins; [

        # Syntax
        #vim-nix
        #vim-markdown

        # Quality of life
        vim-lastplace         # Opens document where you left it
        auto-pairs            # Print double quotes/brackets/etc.
        vim-gitgutter         # See uncommitted changes of file :GitGutterEnable

        # File Tree
        nerdtree              # File Manager - set in extraConfig to F6
	
        # Customization 
        wombat256-vim         # Color scheme for lightline
        srcery-vim            # Color scheme for text

        lightline-vim         # Info bar at bottom
        indent-blankline-nvim # Indentation lines

        # Syntax
        nvim-treesitter.withAllGrammars
        # finder
        telescope-nvim
        # completion
        nvim-cmp
        # status line
        lualine-nvim
        # indent
        indent-blankline-nvim
      ];

      extraPackages = with pkgs; [
        ripgrep
        fd
      ];

      extraConfig = ''
        set expandtab
        set shiftwidth=4
        set tabstop=4
      '';

      extraLuaConfig = ''
          vim.g.mapleader = ' '
	      vim.g.maplocalleader = ' '

          -- Set highlight on search
          vim.o.hlsearch = false
          
          -- Make line numbers default
          vim.wo.number = true
          
          -- Enable mouse mode
          vim.o.mouse = 'a'
          
          -- Sync clipboard between OS and Neovim.
          --  Remove this option if you want your OS clipboard to remain independent.
          --  See `:help 'clipboard'`
          vim.o.clipboard = 'unnamedplus'
          
          -- Enable break indent
          vim.o.breakindent = true
          
          -- Save undo history
          vim.o.undofile = true
          
          -- Case insensitive searching UNLESS /C or capital in search
          vim.o.ignorecase = true
          vim.o.smartcase = true
          
          -- Keep signcolumn on by default
          vim.wo.signcolumn = 'yes'
          
          -- Decrease update time
          vim.o.updatetime = 250
          vim.o.timeout = true
          vim.o.timeoutlen = 300
          
          -- Set completeopt to have a better completion experience
          vim.o.completeopt = 'menuone,noselect'
          
          -- NOTE: You should make sure your terminal supports this
          vim.o.termguicolors = true

          -- [[ Highlight on yank ]]
          -- See `:help vim.highlight.on_yank()`
          local highlight_group = vim.api.nvim_create_augroup('YankHighlight', { clear = true })
          vim.api.nvim_create_autocmd('TextYankPost', {
            callback = function()
              vim.highlight.on_yank()
            end,
            group = highlight_group,
            pattern = '*',
          })
          
          -- [[ Configure Telescope ]]
          -- See `:help telescope` and `:help telescope.setup()`
          require('telescope').setup {
            defaults = {
              mappings = {
                i = {
                  ['<C-u>'] = false,
                  ['<C-d>'] = false,
                },
              },
            },
          }
          
          -- Enable telescope fzf native, if installed
          pcall(require('telescope').load_extension, 'fzf')
          
          -- See `:help telescope.builtin`
          vim.keymap.set('n', '<leader>?', require('telescope.builtin').oldfiles, { desc = '[?] Find recently opened files' })
          vim.keymap.set('n', '<leader><space>', require('telescope.builtin').buffers, { desc = '[ ] Find existing buffers' })
          vim.keymap.set('n', '<leader>/', function()
            -- You can pass additional configuration to telescope to change theme, layout, etc.
            require('telescope.builtin').current_buffer_fuzzy_find(require('telescope.themes').get_dropdown {
              winblend = 10,
              previewer = false,
            })
          end, { desc = '[/] Fuzzily search in current buffer' })
          
          vim.keymap.set('n', '<leader>gf', require('telescope.builtin').git_files, { desc = 'Search [G]it [F]iles' })
          vim.keymap.set('n', '<leader>sf', require('telescope.builtin').find_files, { desc = '[S]earch [F]iles' })
          vim.keymap.set('n', '<leader>sh', require('telescope.builtin').help_tags, { desc = '[S]earch [H]elp' })
          vim.keymap.set('n', '<leader>sw', require('telescope.builtin').grep_string, { desc = '[S]earch current [W]ord' })
          vim.keymap.set('n', '<leader>sg', require('telescope.builtin').live_grep, { desc = '[S]earch by [G]rep' })
          vim.keymap.set('n', '<leader>sd', require('telescope.builtin').diagnostics, { desc = '[S]earch [D]iagnostics' })
          require("indent_blankline").setup {
              -- for example, context is off by default, use this to turn it on
              show_current_context = true,
              show_current_context_start = true,
          }
      '';
    };
  };
}