nix-community.nixvim/docs/user-guide/install.md
Alex Hamilton 8716bc557a Migrate homeManagerModules uses to homeModules
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# Installation
You must use a `nixpkgs` version compatible with the nixvim version you choose.
The `main` branch requires to use a _very recent_ version of nixpkgs unstable.
In order to guarantee the compatibility between nixvim & nixpkgs it is recommended to always update both at the same time.
When using a `stable` version you must use the corresponding nixvim branch, for example `nixos-25.05` when using NixOS 25.05.
Failure to use the correct branch, or an old revision of nixpkgs will likely result in errors of the form `vimPlugins.<name> attribute not found`.
NixVim can be used in four ways:
- As a NixOS module
- As a Home-Manager module
- As a nix-darwin module
- As a standalone derivation
NixVim is also available for nix flakes, or directly through an import.
## Accessing nixvim
For a direct import you can add nixvim to your configuration as follows:
```nix
let
nixvim = import (builtins.fetchGit {
url = "https://github.com/nix-community/nixvim";
# When using a different channel you can use `ref = "nixos-<version>"` to set it here
});
in
```
When using flakes you can simply add `nixvim` to the inputs:
```nix
{
inputs.nixvim = {
url = "github:nix-community/nixvim";
# If using a stable channel you can use `url = "github:nix-community/nixvim/nixos-<version>"`
inputs.nixpkgs.follows = "nixpkgs";
};
# outputs...
}
```
## Usage
NixVim can be used standalone or as a module for NixOS, home-manager, or nix-darwin.
When used standalone, a custom NixVim derivation is produced that can be used like any other package.
When used as a module, NixVim can be enabled though `programs.nixvim.enable`.
### Usage as a module (NixOS, home-manager, nix-darwin)
When using NixVim as a module you must import the NixVim module into your module system.
The three imports are:
- `<nixvim>.homeModules.nixvim`
- `<nixvim>.nixosModules.nixvim`
- `<nixvim>.nixDarwinModules.nixvim`
`<nixvim>` refers to the way to access nixvim, depending on how you fetched nixvim as described in the previous section.
The imports can be added as a `imports = [ <nixvim_import> ]` in a configuration file.
You will then be able to enable nixvim through `programs.nixvim.enable = true`, and configure the
options as `programs.nixvim.<path>.<to>.<option> = <value>`.
When you use nixvim as a module, an additional module argument is passed on allowing you to peek through the configuration with `hmConfig`, `nixosConfig`, and `darwinConfig` for home-manager, NixOS, and nix-darwin respectively.
This is useful if you use nixvim both as part of an environment and standalone.
For more platform-specific options and information, see [Nixvim Platforms](../platforms/index.md).
### Standalone usage
When using nixvim as a standalone derivation you can use the following functions, located in `<nixvim>.legacyPackages.${system}`:
- `makeNixvim`: A simplified version of `makeNixvimWithModule` for when you only need to specify `module` and the other options can be left as the defaults.
This function's only argument is a nixvim module, e.g. `{ extraConfigLua = "print('hi')"; }`
- `makeNixvimWithModule`: This function takes an attribute set of the form: `{pkgs, extraSpecialArgs, module}`.
The only required argument is `module`, being a nixvim module. This gives access to the `imports`, `options`, `config` variables, and using functions like `{config, ...}: { ... }`.
There are also some helper functions in `<nixvim>.lib.${system}` like:
- `check.mkTestDerivationFromNixvimModule`, taking the same arguments as `makeNixvimWithModule` and generates a check derivation.
- `check.mkTestDerivationFromNvim`, taking an attribute set of the form `{name = "<derivation name>"; nvim = <nvim derivation>}`. The `nvim` is the standalone derivation provided by NixVim.
The nixvim derivation can then be used like any other package!
For an example, see the [nixvim standalone flake template](https://github.com/nix-community/nixvim/blob/main/templates/simple/flake.nix).
For more information see [Standalone Usage](../platforms/standalone.md).