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[https://neovim.io Neovim] is a fork of [[Vim]] aiming to improve the codebase, allowing for easier implementation of APIs, improved user experience and plugin implementation.  
<languages/>
<translate>
<!--T:1-->
[https://neovim.io/ Neovim]<ref>Neovim Team, "Home - Neovim", Neovim Official Website, N/A. https://neovim.io/</ref> is a highly extensible and open source text editor that aims to improve upon and modernize the popular [[Vim]]<ref>NixOS Wiki, Vim. https://wiki.nixos.org/wiki/Vim</ref> 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.


== Installation ==
<!--T:2-->
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.


=== With Home Manager ===
== Installation == <!--T:3-->


[[Home Manager]] has a module for Neovim, which can be enabled via
==== Using nix-shell ==== <!--T:4-->


<syntaxhighlight lang="nix">
</translate>
programs.neovim = {
<syntaxhighlight lang="bash" start="3">
  enable = true;
nix-shell -p neovim
  extraConfig = ''
    set number relativenumber
  '';
};
</syntaxhighlight>
</syntaxhighlight>
<translate>


More information about the module can be found here: [https://nix-community.github.io/home-manager/options.xhtml#opt-programs.neovim.enable Home Manager Manual].
==== Using Global Configuration ==== <!--T:5-->


=== System-wide ===
</translate>
<syntaxhighlight lang="text">
environment.systemPackages = [
  pkgs.neovim
];
</syntaxhighlight>
<translate>


If you do not use Home Manager, you can use the following code in your NixOS configuration:
<!--T:37-->
After modifying your configuration, apply the changes by running:


<syntaxhighlight lang="nix">
</translate>
programs.neovim = {
<syntaxhighlight lang="bash">
  enable = true;
sudo nixos-rebuild switch
  defaultEditor = true;
};
</syntaxhighlight>
</syntaxhighlight>
<translate>


You can also manually add Neovim to your packages. This should only be used if the two version above do not work for you.
==== Using Home Configuration ==== <!--T:6-->


<syntaxhighlight lang="nix">
</translate>
environment.systemPackages = [ pkgs.neovim ];
<syntaxhighlight lang="text">
home.packages = [  
  pkgs.neovim  
];
</syntaxhighlight>
</syntaxhighlight>
<translate>


== Configuration ==
<!--T:38-->
After updating your configuration, apply the changes by running:


Neovim shares most of its configuration with Vim. See the [[Vim|Vim page]] for more details on the use of both.
</translate>
 
<syntaxhighlight lang="bash">
=== With Home Manager ===
home-manager switch
 
The Home Manager module does not expose many configuration options. Therefore, the easiest way to get started is to use the [https://nix-community.github.io/home-manager/options.html#opt-programs.neovim.extraConfig extraConfig] option.
You can copy your old config or directly load your default Neovim config via:
 
<syntaxhighlight lang="nix">
programs.neovim.extraConfig = lib.fileContents ../path/to/your/init.vim;
</syntaxhighlight>
</syntaxhighlight>
<translate>


To use Neovim as your default editor, you can set the <code>EDITOR</code> [https://search.nixos.org/options?show=environment.variables&type=packages&query=environment.variables environmental variable] to "nvim" by adding the following to your NixOS configuration:
== Configuration == <!--T:7-->
 
<syntaxhighlight lang="nix">
environment.variables.EDITOR = "nvim";
</syntaxhighlight>


The Home Manager module does also expose options to automatically add <code>vi</code> and <code>vim</code> aliases.
==== Basic ==== <!--T:8-->
To use them, add the following to your Home Manager configuration:


</translate>
<syntaxhighlight lang="nix">
<syntaxhighlight lang="nix">
<translate>
<!--T:39-->
# Global Configuration
</translate>
programs.neovim = {
programs.neovim = {
  viAlias = true;
  enable = true;
  vimAlias = true;
  defaultEditor = true;
};
};
</syntaxhighlight>


==== Installing Plugins ====
<translate>
 
<!--T:40-->
Plugins can be installed using the <code>programs.neovim.plugins</code> option.
# Home Configuration
You can add only the plugin, or the plugin with its corresponding config:
</translate>
 
programs.neovim = {
<syntaxhighlight lang="nix">
   enable = true;
programs.neovim.plugins = [
   extraConfig = ''
  pkgs.vimPlugins.nvim-tree-lua
     set number relativenumber
  {
  '';
    plugin = pkgs.vimPlugins.vim-startify;
};
    config = "let g:startify_change_to_vcs_root = 0";
  }
];
</syntaxhighlight>
 
If you only add the plugin, you can add the configuration as described above.
 
An index of official packages can be found in on [https://search.nixos.org/packages?from=0&size=50&sort=relevance&type=packages&query=vimPlugins search.nixos.org].
In addition to the official packages, there are several user maintained repositories, such as [https://github.com/m15a/nixpkgs-vim-extra-plugins vim-extra-plugins] or [https://github.com/NixNeovim/NixNeovimPlugins NixNeovimPlugins].Plugins which are
not available in any of these repositories may be integrated using the <code>vimUtils.buildVimPlugin</code> function from Nixpkgs:
 
<syntaxhighlight lang="nix">
pkgs.vimUtils.buildVimPlugin {
   pname = "whatever";
   version = "whatever";
  src = builtins.fetchGit {
     url = "https://github.com/example/whatever.git";
    ref = "whatever";
  };
  buildScript = ":";
}
</syntaxhighlight>
</syntaxhighlight>
<translate>


=== System-wide ===
==== Advanced ==== <!--T:10-->
 
The NixOS module does not have an <code>extraConfig</code> option as the Home Manager module does.
Instead, you can use the <code>programs.neovim.configure</code> option as described [https://search.nixos.org/options?show=programs.neovim.configure&type=packages&query=neovim here].
 
The following example configures RC commands and enables the plugin <code>ctrlp</code> to support fuzzy file search (see [https://github.com/ctrlpvim/ctrlp.vim homepage] on how to use it)


</translate>
<syntaxhighlight lang="nix">
<syntaxhighlight lang="nix">
<translate>
<!--T:41-->
# Global Configuration
</translate>
programs.neovim = {
programs.neovim = {
   enable = true;
   enable = true;
  defaultEditor = true;
  viAlias = true;
  vimAlias = true;
   configure = {
   configure = {
     customRC = ''
     customRC = ''
Line 122: Line 111:
   };
   };
};
};
<translate>
<!--T:42-->
# Home Configuration
# You have to add the line below to set it as the default editor:
</translate>
environment.variables.EDITOR = "nvim";
</syntaxhighlight>
</syntaxhighlight>
<translate>
== Tips and Tricks == <!--T:12-->


To set Neovim as your default editor:
==== Location of Options ==== <!--T:13-->


<!--T:43-->
The home manager options are defined in the following [https://nix-community.github.io/home-manager/options.xhtml#opt-programs.neovim.enable Home Manager Options Manual]<ref>Nix Community, "Home Manager Option Search", Nix Community GitHub Pages, N/A. https://nix-community.github.io/home-manager/options.xhtml#opt-programs.neovim.enable</ref>.
<!--T:14-->
The global options are listed on [https://mynixos.com/search?q=nixpkgs%2Foption%2Fprograms.neovim MyNixOS]<ref>MyNixOS Team, "Search: nixpkgs/option/programs.neovim", MyNixOS, N/A. https://mynixos.com/search?q=nixpkgs%2Foption%2Fprograms.neovim</ref>.
==== Package Variations ==== <!--T:15-->
<!--T:44-->
Have a look at the [https://github.com/nix-community/neovim-nightly-overlay Neovim Nightly Overlay]<ref>Nix Community, "neovim-nightly-overlay", GitHub, N/A. https://github.com/nix-community/neovim-nightly-overlay</ref> to install the most recent current nightly version of Neovim.
<!--T:16-->
You can run the master version via the following command:
<!--T:17-->
nix run "github:nix-community/neovim-nightly-overlay"
==== Plugin Management ==== <!--T:21-->
</translate>
<syntaxhighlight lang="nix">
<syntaxhighlight lang="nix">
programs.neovim = {
plugins = [
  defaultEditor = true;
<translate>
};
  <!--T:49-->
</syntaxhighlight>
# Example Plugin: nvim-tree-lua
</translate>
  pkgs.vimPlugins.nvim-tree-lua
 
<translate>
  <!--T:50-->
# Example Plugin: vim-startify with configuration
</translate>
  {
    plugin = pkgs.vimPlugins.vim-startify;
    config = "let g:startify_change_to_vcs_root = 0";
  }
 
<translate>
  <!--T:51-->
# 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:
</translate>
  {
    plugin = pkgs.vimPlugins.nvim-colorizer-lua;
    config = ''
      packadd! nvim-colorizer.lua
      lua << END
        require 'colorizer'.setup {
          '*';<translate> <!--T:52--> -- Highlight all files, but customize some others.</translate>
          '!vim';<translate> <!--T:53--> -- Exclude vim from highlighting.</translate>
        }
      END
    '';
  }
 
<translate>
  <!--T:54-->
# Example Plugin: nvim-treesitter with Lua config
</translate>
  {
    plugin = pkgs.vimPlugins.nvim-treesitter;
    config = ''
      packadd! nvim-treesitter
      lua <<EOF
        require'nvim-treesitter.configs'.setup {
          highlight = {
            enable = true,              <translate><!--T:55--> -- false will disable the whole extension</translate>
            disable = {},              <translate><!--T:56--> -- list of languages that will be disabled</translate>
          },
          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
    '';
  }


Further, the NixOS module does also expose options to automatically add <code>vi</code> and <code>vim</code> aliases.
<translate>
To use them, add the following to your NixOS configuration:
  <!--T:57-->
# 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 ]))


<syntaxhighlight lang="nix">
  <!--T:58-->
programs.neovim = {
# Option 3: Installing grammars without Nix
   viAlias = true;
  # Installing grammar packages through the built-in command can lead to errors.  
  vimAlias = true;
   # The following Neovim command will install syntax highlighting for the C programming language: :TSInstall c
};
</translate>
];
</syntaxhighlight>
</syntaxhighlight>
<translate>


== Tips and tricks ==
==== Frameworks ==== <!--T:18-->


=== Build Neovim using Nix ===
<!--T:45-->
If you prefer not to configure your system manually, NixOS offers several predefined configurations and community-supported options. Here are a few of them:


You can also compile Neovim using nix. For this, the Neovim GitHub page has more information on this:
<!--T:19-->
[https://github.com/neovim/neovim/wiki/Building-Neovim#nixos--nix Neovim Guide].
* [https://www.lazyvim.org/ LazyVim]<ref>LazyVim Team, "LazyVim", LazyVim Official Website, N/A. https://www.lazyvim.org/</ref>


The Neovim repository also contains a flake.
<!--T:46-->
You can run the master version via the following command:
* [https://astronvim.com/ AstroVim]<ref>AstroNvim Team, "AstroNvim", AstroNvim Official Website, N/A. https://astronvim.com/</ref>


nix run "github:neovim/neovim?dir=contrib"
<!--T:47-->
* [https://nvchad.com/ NVChad]<ref>NvChad Team, "NvChad", NvChad Official Website, N/A. https://nvchad.com/</ref>


Finally, there is a [https://github.com/nix-community/neovim-nightly-overlay Neovim Nightly Overlay].
<!--T:48-->
Another excellent option is [https://www.lunarvim.org/docs/installation LunarVim]<ref>LunarVim Team, "Installation", LunarVim Documentation, N/A. https://www.lunarvim.org/docs/installation</ref>. 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 <code>lunarvim</code> package from <code>nixpkgs</code> and is started with the <code>lvim</code> command.


=== Note on Lua plugins  ===
<!--T:20-->
The configuration for LunarVim is stored in <code>./config/lvim</code>.


Due to how the `runtimepath` for Lua modules is [https://github.com/nanotee/nvim-lua-guide#a-note-about-packages processed], your configuration may require <code>packadd! plugin-name</code> to require a module. A home-manager example:
== Troubleshooting == <!--T:59-->


<syntaxhighlight lang="nix">
== References == <!--T:27-->
programs.neovim = {
  plugins = [
    {
      plugin = pkgs.vimPlugins.nvim-colorizer-lua;
      config = ''
        packadd! nvim-colorizer.lua
        lua << END
require 'colorizer'.setup {
  '*'; -- Highlight all files, but customize some others.
  '!vim'; -- Exclude vim from highlighting.
}
END
      '';
    }
  ];
}
</syntaxhighlight>


== See Also ==
</translate>
* [[Vim]]
* [[Treesitter|Treesitter for Neovim]]


[[Category:Applications]]
[[Category:Applications]]
[[Category:Text Editor]]

Latest revision as of 05:29, 16 August 2024

Neovim[1] is a highly extensible and open source text editor that aims to improve upon and modernize the popular Vim[2] 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.

Installation

Using nix-shell

nix-shell -p neovim

Using Global Configuration

environment.systemPackages = [
  pkgs.neovim
];

After modifying your configuration, apply the changes by running:

sudo nixos-rebuild switch

Using Home Configuration

home.packages = [ 
  pkgs.neovim 
];

After updating your configuration, apply the changes by running:

home-manager switch

Configuration

Basic

# Global Configuration
programs.neovim = {
   enable = true;
   defaultEditor = true;
};

# Home Configuration
programs.neovim = {
  enable = true;
  extraConfig = ''
    set number relativenumber
  '';
};

Advanced

# Global Configuration
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 ];
    };
  };
};

# Home Configuration
# You have to add the line below to set it as the default editor:
environment.variables.EDITOR = "nvim";

Tips and Tricks

Location of Options

The home manager options are defined in the following Home Manager Options Manual[3].

The global options are listed on MyNixOS[4].

Package Variations

Have a look at the Neovim Nightly Overlay[5] 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 = [
  # Example Plugin: nvim-tree-lua
  pkgs.vimPlugins.nvim-tree-lua

  # Example Plugin: vim-startify with configuration
  {
    plugin = pkgs.vimPlugins.vim-startify;
    config = "let g:startify_change_to_vcs_root = 0";
  }

  # 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:
  {
    plugin = pkgs.vimPlugins.nvim-colorizer-lua;
    config = ''
      packadd! nvim-colorizer.lua
      lua << END
        require 'colorizer'.setup {
          '*'; -- Highlight all files, but customize some others.
          '!vim'; -- Exclude vim from highlighting.
        }
      END
    '';
  }

  # Example Plugin: nvim-treesitter with Lua config
  {
    plugin = pkgs.vimPlugins.nvim-treesitter;
    config = ''
      packadd! nvim-treesitter
      lua <<EOF
        require'nvim-treesitter.configs'.setup {
          highlight = {
            enable = true,              -- false will disable the whole extension
            disable = {},               -- list of languages that will be disabled
          },
          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
    '';
  }

  # 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 ]))

  # 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
];

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:

Another excellent option is LunarVim[9]. 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.

Troubleshooting

References

  1. Neovim Team, "Home - Neovim", Neovim Official Website, N/A. https://neovim.io/
  2. NixOS Wiki, Vim. https://wiki.nixos.org/wiki/Vim
  3. Nix Community, "Home Manager Option Search", Nix Community GitHub Pages, N/A. https://nix-community.github.io/home-manager/options.xhtml#opt-programs.neovim.enable
  4. MyNixOS Team, "Search: nixpkgs/option/programs.neovim", MyNixOS, N/A. https://mynixos.com/search?q=nixpkgs%2Foption%2Fprograms.neovim
  5. Nix Community, "neovim-nightly-overlay", GitHub, N/A. https://github.com/nix-community/neovim-nightly-overlay
  6. LazyVim Team, "LazyVim", LazyVim Official Website, N/A. https://www.lazyvim.org/
  7. AstroNvim Team, "AstroNvim", AstroNvim Official Website, N/A. https://astronvim.com/
  8. NvChad Team, "NvChad", NvChad Official Website, N/A. https://nvchad.com/
  9. LunarVim Team, "Installation", LunarVim Documentation, N/A. https://www.lunarvim.org/docs/installation