Neovim

Neovim is a highly extensible and open source text editor that aims to improve upon and modernize the popular Vim editor. It's designed to be a drop-in replacement for Vim, maintaining compatibility with most Vim plugins and configurations while offering additional features and improvements. Neovim focuses on extensibility, usability, and performance.

It introduces a powerful plugin architecture that allows for asynchronous plugin execution, which can significantly improve performance for certain operations. It also includes a built-in terminal emulator, allowing users to run shell commands directly within the editor. The project emphasizes code quality and maintainability, with a clean, well-documented codebase that makes it easier for developers to contribute.

インストール

nix-shellを使う

nix-shell -p neovim

グローバル設定を使う

environment.systemPackages = [
  pkgs.neovim
];

設定を変更したら、次のコマンドを実行して変更を適用する：

sudo nixos-rebuild switch

Home設定を使う

home.packages = [ 
  pkgs.neovim 
];

After updating your configuration, apply the changes by running:

home-manager switch

設定

Basic

<div lang="en" dir="ltr" class="mw-content-ltr">
# Global Configuration
</div>
programs.neovim = {
   enable = true;
   defaultEditor = true;
};

<div lang="en" dir="ltr" class="mw-content-ltr">
# Home Configuration
</div>
programs.neovim = {
  enable = true;
  extraConfig = ''
    set number relativenumber
  '';
};

Advanced

<div lang="en" dir="ltr" class="mw-content-ltr">
# Global Configuration
</div>
programs.neovim = {
  enable = true;
  defaultEditor = true;
  viAlias = true;
  vimAlias = true;
  configure = {
    customRC = ''
      set number
      set cc=80
      set list
      set listchars=tab:→\ ,space:·,nbsp:␣,trail:•,eol:¶,precedes:«,extends:»
      if &diff
        colorscheme blue
      endif
    '';
    packages.myVimPackage = with pkgs.vimPlugins; {
      start = [ ctrlp ];
    };
  };
};

<div lang="en" dir="ltr" class="mw-content-ltr">
# Home Configuration
# You have to add the line below to set it as the default editor:
</div>
environment.variables.EDITOR = "nvim";

Tips and Tricks

Location of Options

The home manager options are defined in the following Home Manager Options Manual.

The global options are listed on MyNixOS.

Package Variations

Have a look at the Neovim Nightly Overlay to install the most recent current nightly version of Neovim.

You can run the master version via the following command:

nix run "github:nix-community/neovim-nightly-overlay"

Plugin Management

plugins = [
  <div lang="en" dir="ltr" class="mw-content-ltr">
# Example Plugin: nvim-tree-lua
</div>
  pkgs.vimPlugins.nvim-tree-lua

  <div lang="en" dir="ltr" class="mw-content-ltr">
# Example Plugin: vim-startify with configuration
</div>
  {
    plugin = pkgs.vimPlugins.vim-startify;
    config = "let g:startify_change_to_vcs_root = 0";
  }

  <div lang="en" dir="ltr" class="mw-content-ltr">
# Example Plugin: nvim-colorizer-lua with Lua config
  # Due to how the runtimepath for Lua modules is processed, your configuration may require 
  # packadd! plugin-name to require a module. A home-manager example:
</div>
  {
    plugin = pkgs.vimPlugins.nvim-colorizer-lua;
    config = ''
      packadd! nvim-colorizer.lua
      lua << END
        require 'colorizer'.setup {
          '*'; <span lang="en" dir="ltr" class="mw-content-ltr">-- Highlight all files, but customize some others.</span>
          '!vim'; <span lang="en" dir="ltr" class="mw-content-ltr">-- Exclude vim from highlighting.</span>
        }
      END
    '';
  }

  <div lang="en" dir="ltr" class="mw-content-ltr">
# Example Plugin: nvim-treesitter with Lua config
</div>
  {
    plugin = pkgs.vimPlugins.nvim-treesitter;
    config = ''
      packadd! nvim-treesitter
      lua <<EOF
        require'nvim-treesitter.configs'.setup {
          highlight = {
            enable = true,              <span lang="en" dir="ltr" class="mw-content-ltr">-- false will disable the whole extension</span>
            disable = {},               <span lang="en" dir="ltr" class="mw-content-ltr">-- list of languages that will be disabled</span>
          },
          incremental_selection = {
            enable = true,
            keymaps = {
              init_selection = "gnn",
              node_incremental = "grn",
              scope_incremental = "grc",
              node_decremental = "grm",
            },
          },
          textobjects = {
            select = {
              enable = true,
              lookahead = true,
              keymaps = {
                ["af"] = "@function.outer",
                ["if"] = "@function.inner",
                ["ac"] = "@class.outer",
                ["ic"] = "@class.inner",
              },
            },
          },
        }
      EOF
    '';
  }

  <div lang="en" dir="ltr" class="mw-content-ltr">
# Installing grammars for tree-sitter
  # Option 1: Install all grammar packages
  pkgs.vimPlugins.nvim-treesitter.withAllGrammars
  
  # Option 2: Install specific grammar packages
  # (pkgs.vimPlugins.nvim-treesitter.withPlugins (p: [ p.c p.java ]))
</div>

  <div lang="en" dir="ltr" class="mw-content-ltr">
# Option 3: Installing grammars without Nix
  # Installing grammar packages through the built-in command can lead to errors. 
  # The following Neovim command will install syntax highlighting for the C programming language: :TSInstall c
</div>
];

Frameworks

If you prefer not to configure your system manually, NixOS offers several predefined configurations and community-supported options. Here are a few of them:

• LazyVim

• AstroVim

• NVChad

Another excellent option is LunarVim. The development community describes it as "an IDE layer for Neovim with sane defaults." LunarVim includes an installer/updater for LSP modules and other features. It can be installed via the lunarvim package from nixpkgs and is started with the lvim command.

The configuration for LunarVim is stored in ./config/lvim.