From b1e6fb8e3f62bb8445526e907be7c70dd09fab7e Mon Sep 17 00:00:00 2001
From: Shahzad Malik Muzaffar <shahzad.malik.muzaffar@cern.ch>
Date: Tue, 4 Nov 2025 07:03:52 +0100
Subject: [PATCH] acts: fix for building with newer eigen and avoid picking up
 system python

---
 acts.spec | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/acts.spec b/acts.spec
index f245d66cfed..acd49af14c0 100644
--- a/acts.spec
+++ b/acts.spec
@@ -6,7 +6,7 @@
 ## INCLUDE cuda-flags
 ## INCLUDE rocm-flags
 
-%define tag         2d4cf6938
+%define tag         a58a6d05ed4660d5644d14f49fa28b4d82b92396
 %define branch      cms/%{realversion}
 %define github_user cms-externals
 Source: git+https://github.com/%{github_user}/%{n}.git?obj=%{branch}/%{tag}&export=%{n}-%{realversion}&output=/%{n}-%{realversion}-%{tag}.tgz
@@ -102,6 +102,7 @@ cmake ../%{n}-%{realversion} \
 %if %{build_test}
   -DACTS_BUILD_UNITTESTS="ON" \
   -DACTS_BUILD_INTEGRATIONTESTS="ON" \
+  -DPython_EXECUTABLE=$(which python3) \
   -DACTS_BUILD_EXAMPLES_PYTHON_BINDINGS="ON" \
   -DTRACCC_BUILD_TESTING="ON" \
 %endif