{ config, lib, inputs, upkgs, ... }: let
  utils = inputs.nixcats.utils;
in {
  imports = [
    inputs.nixcats.homeModule
  ];

  config = {
    # this value, nixCats is the defaultPackageName you pass to mkNixosModules
    # it will be the namespace for your options.
    nixCats = {
      enable = true;
      nixpkgs_version = inputs.nixpkgs;
      # this will add the overlays from ./overlays and also,
      # add any plugins in inputs named "plugins-pluginName" to pkgs.neovimPlugins
      # It will not apply to overall system, just nixCats.
      addOverlays = /* (import ./overlays inputs) ++ */ [
        (utils.standardPluginOverlay inputs)
      ];
      # see the packageDefinitions below.
      # This says which of those to install.
      packageNames = [ "auroranvim" ];

      luaPath = "${./.}";

      # the .replace vs .merge options are for modules based on existing configurations,
      # they refer to how multiple categoryDefinitions get merged together by the module.
      # for useage of this section, refer to :h nixCats.flake.outputs.categories
      categoryDefinitions.replace = ({ pkgs, settings, categories, extra, name, mkNvimPlugin, ... }@packageDef: {
        lspsAndRuntimeDeps = {
          general = with pkgs; [
	    ripgrep
	    fd
	  ];
	  treesitter = with pkgs; [
	    tree-sitter
	  ];
	  lang = with pkgs; {
	    lua = [
	      lua-language-server
	    ];
	    nix = [
	      nil
	      nix-doc
	    ];
	    rust = with pkgs; [
	      cargo
              rust-analyzer
	    ];
	    zig = with pkgs; [
	      upkgs.zls # FIX: using upkgs version as zls is broken rn ;-;
	    ];
	    elixir = with pkgs; [
	      elixir-ls
	    ];
	    gleam = with pkgs; [
	      gleam
	    ];
	    java = with pkgs; [
	      jdt-language-server
              javaPackages.compiler.openjdk17
              javaPackages.compiler.openjdk21
	    ];
	  };
        };

        startupPlugins = {
          general = with pkgs.vimPlugins; [
	    lze
	    plenary-nvim
	    nvim-notify
	    nvim-web-devicons
	    base16-nvim
	    mini-nvim
	  ];
	  treesitter = with pkgs.vimPlugins; [
	    nvim-treesitter-textobjects
	    nvim-treesitter.withAllGrammars
	  ];
        };
        optionalPlugins = {
          general = with pkgs.vimPlugins; [
	  ];
	  ui = with pkgs.vimPlugins; [
	    dressing-nvim
	  ];
	  qol = with pkgs.vimPlugins; [
	    undotree
            mini-hipatterns
	  ];
	  telescope = with pkgs.vimPlugins; [
	    telescope-nvim
	    telescope-fzf-native-nvim
	    telescope-ui-select-nvim
	  ];
	  fyler = with pkgs.vimPlugins; [
	    fyler-nvim
	  ];
	  lsp = with pkgs.vimPlugins; [
	    nvim-lspconfig
	  ];
	  completion = with pkgs.vimPlugins; [
	    blink-cmp
            nvim-cmp
            luasnip
            friendly-snippets
            cmp_luasnip
            cmp-buffer
            cmp-path
            cmp-nvim-lua
            cmp-nvim-lsp
            cmp-cmdline
            cmp-nvim-lsp-signature-help
            cmp-cmdline-history
            lspkind-nvim
	  ];
	  lang = with pkgs.vimPlugins; {
	    java = [
	      nvim-jdtls
	    ];
	  };
	  discord = with pkgs.vimPlugins; [
	    neocord # discord presence plugin :3
	  ];
        };

        # shared libraries to be added to LD_LIBRARY_PATH
        # variable available to nvim runtime
        sharedLibraries = {
          general = with pkgs; [
            # libgit2
          ];
        };
        environmentVariables = {
	  lang = {
            rust = {
	      # it literally won't see the rust-analyzer provided to it
	      # if you don't use an envrionment variable to tell it
              RUST_ANALYZER_CMD = "${pkgs.rust-analyzer}/bin/rust-analyzer";
            };
            elixir = {
              ELIXIR_LS_CMD = "${pkgs.elixir-ls}/scripts/language_server.sh";
            };
	    java = {
              JAVA_HOME = "${pkgs.javaPackages.compiler.openjdk17}";
              OPENJDK_17 = "${pkgs.javaPackages.compiler.openjdk17}";
              OPENJDK_21 = "${pkgs.javaPackages.compiler.openjdk21}";
	    };
	  };
        };
        extraWrapperArgs = {
          test = [
            '' --set CATTESTVAR2 "It worked again!"''
          ];
        };
        # lists of the functions you would have passed to
        # python.withPackages or lua.withPackages

        # get the path to this python environment
        # in your lua config via
        # vim.g.python3_host_prog
        # or run from nvim terminal via :!<packagename>-python3
        extraPython3Packages = {
          test = (_:[]);
        };
        # populates $LUA_PATH and $LUA_CPATH
        extraLuaPackages = {
          test = [ (_:[]) ];
        };
      });

      # see :help nixCats.flake.outputs.packageDefinitions
      packageDefinitions.replace = {
        # these are the names of your packages
        # you can include as many as you wish.
        auroranvim = {pkgs , ... }: {
          # they contain a settings set defined above
          # see :help nixCats.flake.outputs.settings
          settings = {
            wrapRc = true;
            # IMPORTANT:
            # your alias may not conflict with your other packages.
            aliases = [ "auroravim" "auravim" "foxyvim" "avix" "fvix" "auim" ];
          };
          # and a set of categories that you want
          # (and other information to pass to lua)
          categories = {
            general = true;

	    ui = true;
	    qol = true;
	    telescope = true;
	    fyler = true;
	    lsp = true;
	    completion = true;
	    treesitter = true;
	    discord = false;

	    lang = {
	      lua = true;
	      nix = true;
	      rust = true;
	      zig = true;
	      elixir = true;
	      gleam = true;
	      java = true;
	    };
          };
        };
      };
    };
  };
}