diff --git a/default.nix b/default.nix
new file mode 100644
index 0000000..f825b56
--- /dev/null
+++ b/default.nix
@@ -0,0 +1,11 @@
+let
+  lock = builtins.fromJSON (builtins.readFile ./flake.lock);
+  call-flake = import (
+    (fetchTarball {
+      url = "https://github.com/divnix/call-flake/archive/${lock.nodes.call-flake.locked.rev}.tar.gz";
+      sha256 = lock.nodes.call-flake.locked.narHash;
+    })
+    + "/flake.nix"
+  );
+in
+call-flake.outputs { } ./.
diff --git a/docs/org/loaders.org b/docs/org/loaders.org
deleted file mode 100644
index 23bc1fc..0000000
--- a/docs/org/loaders.org
+++ /dev/null
@@ -1,108 +0,0 @@
-:PROPERTIES:
-:ID:       da553274-7bc3-4ce0-a314-89a0bfb87a4a
-:header-args: :noweb tangle :comments noweb :exports both
-:PRJ-DIR: ../..
-:EXP-DIR: ../../examples
-:END:
-#+TITLE: loaders
-#+AUTHOR: GuangTao Zhang
-#+EMAIL: gtrunsec@hardenedlinux.org
-#+DATE: 2023-11-19 Sun 15:16
-
-
-#+begin_quote
-Please note that in Pops, the outputs/results should not be directly printed, but instead, they wll be exported through the exports property under the pop object.
-#+end_quote
-
-
-* packages
-:PROPERTIES:
-:CODE-DIR: ../../src/pops
-:END:
-
-- function: ~omnibus.pops.pacakges~
-
-that function is responsible for loading packages in a tree structure and nixpkgs.callPackage <>automatically.
-
-#+begin_src nix :tangle (concat (org-entry-get (point) "CODE-DIR" t) "/packages.nix")
-{ super, root }:
-load:
-let
-  inherit
-    (root.errors.requiredInputs load.inputs "omnibus.pops.packages" [ "nixpkgs" ])
-    nixpkgs
-  ;
-  inherit (nixpkgs) newScope;
-  inherit (nixpkgs.lib) makeScope;
-in
-makeScope newScope (
-  selfScope:
-  ((super.load load).addLoadExtender {
-    load = {
-      loader =
-        __inputs__: path:
-        (selfScope.overrideScope (_: _: { inherit __inputs__; })).callPackage path { };
-      transformer = [ (_cursor: dir: if dir ? default then dir.default else dir) ];
-    };
-  }).addExporters
-    [
-      (POP.extendPop flops.haumea.pops.exporter (
-        self: _super: {
-          exports = {
-            overlay =
-              final: prev:
-              (self.layouts.self.addLoadExtender {
-                load = {
-                  inputs.inputs.nixpkgs = final;
-                  loader =
-                    __inputs__: path:
-                    (__inputs__.inputs.nixpkgs.extend (_: _: { inherit __inputs__; })).callPackage
-                      path
-                      { };
-                };
-              }).exports.default;
-          };
-        }
-      ))
-    ]
-)
-#+end_src
-
-- *pops.packages* have an arg named by anti-namespace of *__inputs__* in the scopePackages, that *__inptus__* can pass all args same as haumea.inputs, such as {super,self, ...} => {__inputs__.self, __inputs__.super, inputs.{...} }
-
-
-** Example
-
-#+begin_src nix :tangle (concat (org-entry-get nil "EXP-DIR" t) "/packages/default.nix")
-{
-  omnibus,
-  inputs,
-  self,
-}:
-omnibus.pops.packages {
-  src = ./__fixture;
-  inputs = {
-    nixpkgs = inputs.nixpkgs.legacyPackages.x86_64-linux;
-  };
-}
-# => out.exports { default = {...}, packages = {...}; }
-#+end_src
-
-
-+ exports
-
-#+begin_src nix
-nix-repl> :p Flake.examples.packages.exports.default
-{ hello1 = «derivation /nix/store/kc6j6vssi60h1yn3kafc7v8ywn1j35lp-example-unfree-package-2.0.drv»; hello2 = «derivation /
-nix/store/v0qa0lw6jhzcwj68zz939kn8ixmiabnb-example-unfree-package-3.0.drv»; }
-#+end_src
-
-  - default (packageSet)
-  - overlay
-    #+begin_src nix :tangle (concat (org-entry-get nil "EXP-DIR" t) "/packagesOverlay.nix")
-{ super, omnibus }:
-let
-  nixos-23_05 = omnibus.flake.inputs.nixos-23_05;
-in
-nixos-23_05.legacyPackages.x86_64-linux.extend super.packages.exports.overlay
-    #+end_src
diff --git a/docs/org/pops.org b/docs/org/pops.org
index 3353c10..bd66a1d 100644
--- a/docs/org/pops.org
+++ b/docs/org/pops.org
@@ -10,7 +10,7 @@
 #+DATE: 2023-11-19 Sun 15:16
 
 #+begin_quote
-Please note that in Pops, the outputs/results should not be directly printed, but instead, they wll be exported through the exports property under the pop object.
+Please note that in Pops, the outputs/results should not be directly printed, but instead, they will be exported through the exports property under the pop object.
 #+end_quote
 
 * Loaders