depot/third_party/nixpkgs/nixos/doc/manual/development/meta-attributes.section.md

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# Meta Attributes {#sec-meta-attributes}
Like Nix packages, NixOS modules can declare meta-attributes to provide
extra information. Module meta attributes are defined in the `meta.nix`
special module.
`meta` is a top level attribute like `options` and `config`. Available
meta-attributes are `maintainers` and `doc`.
Each of the meta-attributes must be defined at most once per module
file.
```nix
{ config, lib, pkgs, ... }:
{
options = {
...
};
config = {
...
};
meta = {
maintainers = with lib.maintainers; [ ericsagnes ];
doc = ./default.xml;
};
}
```
- `maintainers` contains a list of the module maintainers.
- `doc` points to a valid DocBook file containing the module
documentation. Its contents is automatically added to
[](#ch-configuration). Changes to a module documentation have to
be checked to not break building the NixOS manual:
```ShellSession
$ nix-build nixos/release.nix -A manual.x86_64-linux
```