From e14a8cb2152bf19d8be377bb0a333939a87f38c3 Mon Sep 17 00:00:00 2001
From: "d.rotanov" <d.rotanov@rogii.com>
Date: Mon, 12 Oct 2026 16:58:29 +0400
Subject: [PATCH 1/2] STARSTEER-28862 [AI] Fail the Windows build when
 build.bat fails

build_common.cmake ran build.bat for Release and Debug without checking the result, so a failed Release build still produced a package (Debug-only, empty python312.zip) and the job reported SUCCESS (CPython-any-branch #51).
---
 rogii/build_common.cmake | 30 +++++++++++++++++++-----------
 1 file changed, 19 insertions(+), 11 deletions(-)

diff --git a/rogii/build_common.cmake b/rogii/build_common.cmake
index 8a79dfb34afd07..e0d70ebbb5beda 100644
--- a/rogii/build_common.cmake
+++ b/rogii/build_common.cmake
@@ -89,18 +89,26 @@ if(WIN32)
     message (
         "cmd /C ${BUILD_DIRECTORY}\\build.bat -c Release -p ${BUILD_ARCH}"
     )
-    execute_process(
-        COMMAND
-            cmd /C "${BUILD_DIRECTORY}/build.bat -c Release -p ${BUILD_ARCH} ${MSBUILD_PARAMS}"
-        WORKING_DIRECTORY
-            "${BUILD_DIRECTORY}"
-    )
-    execute_process(
-        COMMAND
-            cmd /C "${BUILD_DIRECTORY}/build.bat -c Debug -p ${BUILD_ARCH} ${MSBUILD_PARAMS}"
-        WORKING_DIRECTORY
-            "${BUILD_DIRECTORY}"
+    foreach(
+        CONFIGURATION
+        Release
+        Debug
     )
+        execute_process(
+            COMMAND
+                cmd /C "${BUILD_DIRECTORY}/build.bat -c ${CONFIGURATION} -p ${BUILD_ARCH} ${MSBUILD_PARAMS}"
+            WORKING_DIRECTORY
+                "${BUILD_DIRECTORY}"
+            RESULT_VARIABLE
+                BUILD_RESULT
+        )
+        if(NOT BUILD_RESULT EQUAL 0)
+            message(
+                FATAL_ERROR
+                "build.bat -c ${CONFIGURATION} -p ${BUILD_ARCH} failed: ${BUILD_RESULT}"
+            )
+        endif()
+    endforeach()
 	
 elseif(UNIX)
     set(

From 1e34a6a4b0f6852cd8fd7dfa151d07d058ee32f8 Mon Sep 17 00:00:00 2001
From: "d.rotanov" <d.rotanov@rogii.com>
Date: Mon, 12 Oct 2026 17:02:45 +0400
Subject: [PATCH 2/2] STARSTEER-28862 [AI] Build with a pinned host Python
 3.14.7

PCbuild/find_python.bat installs the latest pythonx86 from nuget unless externals/pythonx86 already holds one. pythonx86 3.15.0 dropped SourceFileLoader.load_module, which Python/makeopcodetargets.py (3.12) still calls, so the Release build broke (CPython-any-branch #51/#52). Install pythonx86 3.14.7 (the version build #50 used) into externals, verified by its nuget SHA512, before running build.bat.
---
 rogii/build_common.cmake | 41 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)

diff --git a/rogii/build_common.cmake b/rogii/build_common.cmake
index e0d70ebbb5beda..0d9d1909ea1e60 100644
--- a/rogii/build_common.cmake
+++ b/rogii/build_common.cmake
@@ -82,6 +82,47 @@ set(
 )
 
 if(WIN32)
+    # PCbuild/find_python.bat takes externals/pythonx86 first and otherwise installs the latest
+    # pythonx86 from nuget; pythonx86 3.15 can no longer run the 3.12 regen scripts.
+    set(
+        HOST_PYTHON_VERSION
+        3.14.7
+    )
+    set(
+        HOST_PYTHON_DIR
+        "${CMAKE_CURRENT_LIST_DIR}/../externals/pythonx86"
+    )
+    set(
+        HOST_PYTHON_ARCHIVE
+        "${CMAKE_CURRENT_LIST_DIR}/../externals/pythonx86.${HOST_PYTHON_VERSION}.nupkg"
+    )
+    file(
+        DOWNLOAD
+            "https://api.nuget.org/v3-flatcontainer/pythonx86/${HOST_PYTHON_VERSION}/pythonx86.${HOST_PYTHON_VERSION}.nupkg"
+            "${HOST_PYTHON_ARCHIVE}"
+        EXPECTED_HASH
+            SHA512=d2bb139210513ab54821e82969131cadde68a86d8e2ed7d27cb747cf8aeb855e4e6d34261f5e86d1a7d7e68e773760e8a14970d6e426a67a3a4df27a89e341e5
+        TLS_VERIFY
+            ON
+    )
+    file(
+        REMOVE_RECURSE
+            "${HOST_PYTHON_DIR}"
+    )
+    file(
+        ARCHIVE_EXTRACT
+        INPUT
+            "${HOST_PYTHON_ARCHIVE}"
+        DESTINATION
+            "${HOST_PYTHON_DIR}"
+    )
+    if(NOT EXISTS "${HOST_PYTHON_DIR}/tools/python.exe")
+        message(
+            FATAL_ERROR
+            "pythonx86 ${HOST_PYTHON_VERSION} has no tools/python.exe"
+        )
+    endif()
+
     set(
         MSBUILD_PARAMS
         "-v:n"