sloth-flake.nvim/flakeModule.nix

{config, ...}: {
  config.flake.flakeModules.default = {
    lib,
    flake-parts-lib,
    ...
  }: let
    inherit (lib) attrsToList listToAttrs mkOption types;
    inherit (flake-parts-lib) mkPerSystemOption;
    topConfig = config;
  in {
    options.perSystem = mkPerSystemOption ({
      pkgs,
      config,
      ...
    }: let
      cfg = config.sloth;
      sLib = cfg.lib;

      packageModule = types.submodule ({config, ...}: {
        options = {
          module = mkOption {
            description = "module used to create your neovim package";
            type = types.deferredModule;
          };

          modules = mkOption {
            description = "modules used to create your neovim package";
            type = with types; listOf deferredModule;
            default = [config.module];
          };

          specialArgs = mkOption {
            description = "specialArgs to follow to your modules";
            type = types.attrs;
            default = {};
          };
        };
      });

      buildPackage = {
        name,
        value,
      }: {
        inherit name;
        value = sLib.mkNeovimPkg {inherit (value) modules specialArgs;};
      };
      packagesList = map buildPackage (attrsToList cfg.packages);
    in {
      options.sloth = {
        lib = mkOption {
          type = types.attrs;
          description = "sloth’s lib";
          default = topConfig.flake.mkLib {inherit pkgs;};
          defaultText = "mkLib {inherit pkgs;}";
        };

        packages = mkOption {
          description = "neovim package to create with sloth";
          default = {};
          type = with types; attrsOf packageModule;
        };
      };

      config.packages = listToAttrs packagesList;
    });
  };
}