[NixOS] Move my-python-packages to overlay

nixos/essential.nix

@@ -1,19 +1,4 @@
 { pkgs, ... }:
-let
-  my-python-packages = python-packages: with python-packages; [
-    appdirs
-    ipdb
-    ipython
-    numpy
-    openpyxl
-    pip
-    requests
-    tox
-    virtualenv
-    virtualenvwrapper
-  ];
-  python-with-my-packages = pkgs.python311.withPackages my-python-packages;
-in
 {
   nixpkgs.config.allowBroken = true;
 
@@ -31,6 +16,7 @@ in
     emacs
     fd
     ffmpeg
+    bento4
     file
     gawk
     gcc

nixos/overlay.nix

@@ -49,6 +49,24 @@ final: prev: {
     withTreeSitter = true;
   };
 
+  python-with-my-packages = let
+    my-python-packages = python-packages:
+      with python-packages; [
+        argcomplete
+        appdirs
+        ipdb
+        ipython
+        numpy
+        openpyxl
+        pip
+        requests
+        tox
+        virtualenv
+        virtualenvwrapper
+      ];
+  in
+    final.python311.withPackages my-python-packages;
+
   # gitea = prev.gitea.overrideAttrs(_: {
   #   src = prev.fetchFromGitHub {
   #     repo = "gitea";