tpm2: move pytss overlay override into package files

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

Author: vadika

packages/own-pkgs-overlay.nix

@@ -1,24 +1,6 @@
 # SPDX-FileCopyrightText: 2022-2026 TII (SSRC) and the Ghaf contributors
 # SPDX-License-Identifier: Apache-2.0
 #
-let
-  patchedPython3Packages =
-    final: prev:
-    prev.python3Packages
-    // {
-      tpm2-pytss = prev.python3Packages.tpm2-pytss.overrideAttrs (old: {
-        patches = map (
-          p:
-          if final.lib.hasSuffix "cross.patch" (toString p) then
-            final.replaceVars ./patches/tpm2-pytss-cross-cpp.patch {
-              crossPrefix = final.stdenv.hostPlatform.config;
-            }
-          else
-            p
-        ) (old.patches or [ ]);
-      });
-    };
-in
 {
   # keep-sorted start skip_lines=1
   flake.overlays.own-pkgs-overlay = final: prev: {
@@ -40,14 +22,16 @@ in
     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 = patchedPython3Packages 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 { };
+    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 { };
+    };
   };
   # keep-sorted end
 }

packages/pkgs-by-name/tpm2-pytss/package.nix

@@ -0,0 +1,19 @@
+# SPDX-FileCopyrightText: 2026 TII (SSRC) and the Ghaf contributors
+# SPDX-License-Identifier: Apache-2.0
+{
+  lib,
+  python3Packages,
+  replaceVars,
+  stdenv,
+}:
+python3Packages.tpm2-pytss.overrideAttrs (old: {
+  patches = map (
+    p:
+    if lib.hasSuffix "cross.patch" (toString p) then
+      replaceVars ../../patches/tpm2-pytss-cross-cpp.patch {
+        crossPrefix = stdenv.hostPlatform.config;
+      }
+    else
+      p
+  ) (old.patches or [ ]);
+})

packages/pkgs-by-name/tpm2-pytss/python3-packages.nix

@@ -0,0 +1,12 @@
+# SPDX-FileCopyrightText: 2026 TII (SSRC) and the Ghaf contributors
+# SPDX-License-Identifier: Apache-2.0
+{
+  callPackage,
+  python3Packages,
+}:
+python3Packages
+// {
+  tpm2-pytss = callPackage ./package.nix {
+    inherit python3Packages;
+  };
+}