{
  pkgs,
  lib,
  self,
  ...
}:

let
  baseModule = _: {
    # Hide documentation relating to _module.args, which isn't a part
    # of this flake
    options._module.args = lib.mkOption { internal = true; };
    # Turn off the checks on the config. We only want the options, so
    # don't eval the config.
    config._module.check = false;
  };

  makeModuleDocs =
    subcomponent: modules:
    let
      eval = lib.evalModules {
        modules = [ baseModule ] ++ modules;
        class = "hylonix";
        specialArgs = { inherit pkgs lib; };
      };
      docs = pkgs.buildPackages.nixosOptionsDoc {
        inherit (eval) options;
        warningsAreErrors = false;
      };
    in
    {
      # These formats are generated by nixosOptionsDoc,
      # so may as well expose them.
      asciiDoc = docs.optionsAsciiDoc;
      commonMark = docs.optionsCommonMark;
      json = docs.optionsJSON;
      nix = docs.optionsNix;
    };
in
{
  modules = {
    all = makeModuleDocs "modules" (
      builtins.attrValues self.hmModules ++ builtins.attrValues self.nixosModules
    );

    hm = {
      all = makeModuleDocs "hmModules" (builtins.attrValues self.hmModules);
      module = builtins.mapAttrs (k: v: makeModuleDocs "hmModules-${k}" [ v ]) self.hmModules;
    };

    nixos = {
      all = makeModuleDocs "nixosModules" (builtins.attrValues self.nixosModules);
      module = builtins.mapAttrs (k: v: makeModuleDocs "nixosModules-${k}" [ v ]) self.nixosModules;
    };
  };
}