From a05b9af428e6ee28280c962f42b335b060d54cbd Mon Sep 17 00:00:00 2001
From: aleksana <me@aleksana.moe>
Date: Mon, 22 Dec 2025 22:25:12 +0800
Subject: [PATCH 1/2] python3: expose all splices for use with hooks

---
 pkgs/development/interpreters/python/passthrufun.nix | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/interpreters/python/passthrufun.nix b/pkgs/development/interpreters/python/passthrufun.nix
index 451292d198e97..8b930de5f3945 100644
--- a/pkgs/development/interpreters/python/passthrufun.nix
+++ b/pkgs/development/interpreters/python/passthrufun.nix
@@ -141,7 +141,13 @@ rec {
   pythonAtLeast = lib.versionAtLeast pythonVersion;
   pythonOlder = lib.versionOlder pythonVersion;
   inherit hasDistutilsCxxPatch;
-  inherit pythonOnBuildForHost;
+  inherit
+    pythonOnBuildForBuild
+    pythonOnBuildForHost
+    pythonOnBuildForTarget
+    pythonOnHostForHost
+    pythonOnTargetForTarget
+    ;
   inherit pythonABITags;
 
   tests = callPackage ./tests.nix {

From 956686248551ea0f1e40495e4e642d8c8e46dfe1 Mon Sep 17 00:00:00 2001
From: aleksana <me@aleksana.moe>
Date: Mon, 22 Dec 2025 22:25:26 +0800
Subject: [PATCH 2/2] python3Packages.setuptools-rust: fix python version
 inconsistency

---
 .../setuptools-rust/default.nix               | 21 +++++++------------
 1 file changed, 7 insertions(+), 14 deletions(-)

diff --git a/pkgs/development/python-modules/setuptools-rust/default.nix b/pkgs/development/python-modules/setuptools-rust/default.nix
index cb4984d2852cc..0ccf20709c5db 100644
--- a/pkgs/development/python-modules/setuptools-rust/default.nix
+++ b/pkgs/development/python-modules/setuptools-rust/default.nix
@@ -13,6 +13,7 @@
   setuptools-rust,
   setuptools-scm,
   replaceVars,
+  python,
   targetPackages,
 }:
 buildPythonPackage rec {
@@ -44,20 +45,12 @@ buildPythonPackage rec {
 
   # integrate the setup hook to set up the build environment for cross compilation
   # this hook is automatically propagated to consumers using setuptools-rust as build-system
-  #
-  # Only include the setup hook if targetPackages.python3 is defined.
-  # targetPackages.python3 is not always available, for example when including
-  # setuptools-rust via buildInputs instead of nativeBuildInputs or building it directly.
-  setupHook =
-    if !(targetPackages ? python3) then
-      null
-    else
-      replaceVars ./setuptools-rust-hook.sh {
-        pyLibDir = "${targetPackages.python3}/lib/${targetPackages.python3.libPrefix}";
-        cargoBuildTarget = stdenv.targetPlatform.rust.rustcTargetSpec;
-        cargoLinkerVar = stdenv.targetPlatform.rust.cargoEnvVarTarget;
-        targetLinker = "${targetPackages.stdenv.cc}/bin/${targetPackages.stdenv.cc.targetPrefix}cc";
-      };
+  setupHook = replaceVars ./setuptools-rust-hook.sh {
+    pyLibDir = "${python.pythonOnTargetForTarget}/lib/${python.pythonOnTargetForTarget.libPrefix}";
+    cargoBuildTarget = stdenv.targetPlatform.rust.rustcTargetSpec;
+    cargoLinkerVar = stdenv.targetPlatform.rust.cargoEnvVarTarget;
+    targetLinker = "${targetPackages.stdenv.cc}/bin/${targetPackages.stdenv.cc.targetPrefix}cc";
+  };
 
   passthru.tests = {
     pyo3 = maturin.tests.pyo3.override {