Prefer default Python version regardless of CMP0094

Closes: #1024625

debian/patches/0001-Prefer-default-Python-version.patch

@@ -1,18 +1,37 @@
 From: =?utf-8?q?Timo_R=C3=B6hling?= <roehling@debian.org>
-Date: Fri, 18 Nov 2022 17:29:27 +0100
+Date: Thu, 24 Nov 2022 21:40:09 +0100
 Subject: Prefer default Python version
 
+This patch prefers /usr/bin/python3 as interpreter over all others,
+subject to version restrictions. CMP0094 is forced to the NEW
+behavior, because the OLD behavior will always end up with the newest
+installed Python version.
+
 Forwarded: not-needed
 ---
- Modules/FindPython/Support.cmake | 2 +-
+ Modules/FindPython/Support.cmake | 9 ++-------
  Modules/FindPythonInterp.cmake   | 1 +
- 2 files changed, 2 insertions(+), 1 deletion(-)
+ 2 files changed, 3 insertions(+), 7 deletions(-)
 
 diff --git a/Modules/FindPython/Support.cmake b/Modules/FindPython/Support.cmake
-index 7a127e4..8767908 100644
+index 7a127e4..cfa852d 100644
 --- a/Modules/FindPython/Support.cmake
 +++ b/Modules/FindPython/Support.cmake
-@@ -1436,7 +1436,7 @@ if (DEFINED ${_PYTHON_PREFIX}_FIND_UNVERSIONED_NAMES)
+@@ -1250,12 +1250,7 @@ endif()
+ unset (${_PYTHON_PREFIX}_SOABI)
+ 
+ # Define lookup strategy
+-cmake_policy (GET CMP0094 _${_PYTHON_PREFIX}_LOOKUP_POLICY)
+-if (_${_PYTHON_PREFIX}_LOOKUP_POLICY STREQUAL "NEW")
+-  set (_${_PYTHON_PREFIX}_FIND_STRATEGY "LOCATION")
+-else()
+-  set (_${_PYTHON_PREFIX}_FIND_STRATEGY "VERSION")
+-endif()
++set (_${_PYTHON_PREFIX}_FIND_STRATEGY "LOCATION")
+ if (DEFINED ${_PYTHON_PREFIX}_FIND_STRATEGY)
+   if (NOT ${_PYTHON_PREFIX}_FIND_STRATEGY MATCHES "^(VERSION|LOCATION)$")
+     message (AUTHOR_WARNING "Find${_PYTHON_PREFIX}: ${${_PYTHON_PREFIX}_FIND_STRATEGY}: invalid value for '${_PYTHON_PREFIX}_FIND_STRATEGY'. 'VERSION' or 'LOCATION' expected.")
+@@ -1436,7 +1431,7 @@ if (DEFINED ${_PYTHON_PREFIX}_FIND_UNVERSIONED_NAMES)
      set (_${_PYTHON_PREFIX}_FIND_UNVERSIONED_NAMES ${${_PYTHON_PREFIX}_FIND_UNVERSIONED_NAMES})
    endif()
  else()