flake.nix

{
  inputs = {
    nixpkgs = {
      url = github:NixOS/nixpkgs?ref=nixos-21.11;
    };
    flake-utils = {
      url = github:numtide/flake-utils;
    };
  };
  outputs = { self, nixpkgs, flake-utils }:
    flake-utils.lib.eachDefaultSystem (system: {
      packages = {
        docs = nixpkgs.legacyPackages.${system}.callPackage ./docs.nix { };
      };
    });
}