From 825a7f002c607ced057489ecd7fb1132b94c3c8b Mon Sep 17 00:00:00 2001
From: Doron Behar <doron.behar@gmail.com>
Date: Mon, 9 Mar 2026 15:54:28 +0200
Subject: [PATCH 1/2] python3: avoid a small `rec` near passthruFun

---
 .../interpreters/python/cpython/default.nix    | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/pkgs/development/interpreters/python/cpython/default.nix b/pkgs/development/interpreters/python/cpython/default.nix
index c4325a4494f5..69209951c676 100644
--- a/pkgs/development/interpreters/python/cpython/default.nix
+++ b/pkgs/development/interpreters/python/cpython/default.nix
@@ -173,13 +173,19 @@ let
           };
         in
         python;
-    in
-    passthruFun rec {
-      inherit self sourceVersion packageOverrides;
-      implementation = "cpython";
-      libPrefix = "python${pythonVersion}${lib.optionalString (!enableGIL) "t"}";
-      executable = libPrefix;
       pythonVersion = with sourceVersion; "${major}.${minor}";
+      libPrefix = "python${pythonVersion}${lib.optionalString (!enableGIL) "t"}";
+    in
+    passthruFun {
+      inherit
+        self
+        sourceVersion
+        packageOverrides
+        libPrefix
+        pythonVersion
+        ;
+      implementation = "cpython";
+      executable = libPrefix;
       sitePackages = "lib/${libPrefix}/site-packages";
       inherit hasDistutilsCxxPatch pythonAttr;
       inherit (splices)

From 20a0e1b210e3c606c86cf8e2ca2a2172ce440475 Mon Sep 17 00:00:00 2001
From: Doron Behar <doron.behar@gmail.com>
Date: Mon, 9 Mar 2026 16:20:08 +0200
Subject: [PATCH 2/2] python3: propagate overrides of spliced pythons

This is a more accurate resurrection of what was meant to be done in
64214826833482bb3b4fd89b77aabf1248abe33b
---
 .../interpreters/python/cpython/default.nix   | 34 +++++++++++++++++--
 1 file changed, 31 insertions(+), 3 deletions(-)

diff --git a/pkgs/development/interpreters/python/cpython/default.nix b/pkgs/development/interpreters/python/cpython/default.nix
index 69209951c676..e674de90810f 100644
--- a/pkgs/development/interpreters/python/cpython/default.nix
+++ b/pkgs/development/interpreters/python/cpython/default.nix
@@ -165,12 +165,40 @@ let
         );
       }
       // __splices;
+      # When we override the interpreter we also need to override the spliced
+      # versions of the interpreter. NOTE: In lua-5/interpreter.nix, this
+      # filter is different - we take every attribute from @inputs, besides
+      # derivations. That filter causes cross compilations issues for Python
+      # See e.g:
+      #
+      # pkgsCross.armv7l-hf-multiplatform.buildPackages.python3Packages.bcrypt
+      #
+      # And the following Nixpkgs issues/PRs:
+      #
+      # - https://github.com/NixOS/nixpkgs/issues/48046
+      # - https://github.com/NixOS/nixpkgs/pull/480005 (Wrong PR)
+      # - https://github.com/NixOS/nixpkgs/pull/482866 (Correct fix)
+      # - https://github.com/NixOS/nixpkgs/pull/498251 (Re-adds this @inputs filter)
+      inputs' = lib.filterAttrs (
+        n: v:
+        (builtins.elem (builtins.typeOf v) [
+          "int"
+          "bool"
+          "string"
+          "path"
+          "null"
+        ])
+        || n == "packageOverrides"
+      ) inputs;
       override =
         attr:
         let
-          python = attr.override {
-            self = python;
-          };
+          python = attr.override (
+            inputs'
+            // {
+              self = python;
+            }
+          );
         in
         python;
       pythonVersion = with sourceVersion; "${major}.${minor}";