overlay: keep python3 override scoped to python3Packages

Signed-off-by: vadik likholetov <vadikas@gmail.com>

Author: vadika

packages/own-pkgs-overlay.nix

@@ -1,6 +1,13 @@
 # SPDX-FileCopyrightText: 2022-2026 TII (SSRC) and the Ghaf contributors
 # SPDX-License-Identifier: Apache-2.0
 #
+let
+  python3PackagesOverride =
+    final: prev:
+    final.callPackage ./pkgs-by-name/tpm2-pytss/python3-packages.nix {
+      inherit (prev) python3Packages;
+    };
+in
 {
   # keep-sorted start skip_lines=1
   flake.overlays.own-pkgs-overlay = final: prev: {
@@ -22,16 +29,14 @@
     make-checks = final.callPackage ./pkgs-by-name/make-checks/package.nix { };
     memsocket = final.callPackage ./pkgs-by-name/memsocket/package.nix { };
     pci-binder = final.callPackage ./pkgs-by-name/pci-binder/package.nix { };
-    python3Packages = final.callPackage ./pkgs-by-name/tpm2-pytss/python3-packages.nix {
-      inherit (prev) python3Packages;
-      rtl8126 = final.callPackage ./pkgs-by-name/rtl8126/package.nix { };
-      tpm-endorsement-certs = final.callPackage ./pkgs-by-name/tpm-endorsement-certs/package.nix { };
-      update-docs-depends = final.callPackage ./pkgs-by-name/update-docs-depends/package.nix { };
-      user-provision = final.callPackage ./pkgs-by-name/user-provision/package.nix { };
-      vtpm-abrmd-forwarder = final.callPackage ./pkgs-by-name/vtpm-abrmd-forwarder/package.nix { };
-      wait-for-unit = final.callPackage ./pkgs-by-name/wait-for-unit/package.nix { };
-      windows-launcher = final.callPackage ./pkgs-by-name/windows-launcher/package.nix { };
-    };
+    python3Packages = python3PackagesOverride final prev;
+    rtl8126 = final.callPackage ./pkgs-by-name/rtl8126/package.nix { };
+    tpm-endorsement-certs = final.callPackage ./pkgs-by-name/tpm-endorsement-certs/package.nix { };
+    update-docs-depends = final.callPackage ./pkgs-by-name/update-docs-depends/package.nix { };
+    user-provision = final.callPackage ./pkgs-by-name/user-provision/package.nix { };
+    vtpm-abrmd-forwarder = final.callPackage ./pkgs-by-name/vtpm-abrmd-forwarder/package.nix { };
+    wait-for-unit = final.callPackage ./pkgs-by-name/wait-for-unit/package.nix { };
+    windows-launcher = final.callPackage ./pkgs-by-name/windows-launcher/package.nix { };
   };
   # keep-sorted end
 }