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Build Python 3.15 Windows tokenizer dependencies before wheel smoke tests #23940

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JacobSzwejbka wants to merge 2 commits into from
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Build Python 3.15 Windows tokenizer dependencies before wheel smoke tests #23940

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fb114b6
Build Python 3.15 Windows tokenizers before wheel smoke installs
JacobSzwejbka Oct 16, 2026
55cdbdc
Keep Windows tokenizer compiler probes below the path limit
JacobSzwejbka Oct 16, 2026
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14 changes: 14 additions & 0 deletions .ci/scripts/wheel/pre_build_script.sh
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Expand Up @@ -164,6 +164,20 @@ fi

"${GITHUB_WORKSPACE}/${REPOSITORY}/install_requirements.sh" --example

if [[ $UNAME_S == *"MINGW"* || $UNAME_S == *"MSYS"* ]]; then
PYTHON_BIN=$(command -v python || command -v python3)
if "${PYTHON_BIN}" -c 'import sys; sys.exit(sys.version_info < (3, 15))'; then
# No cp315 tokenizer wheel is published. Build the pinned source with the
# existing build dependencies and Visual Studio environment before smoke install.
# MSBuild's file tracker needs a short path even during CMake compiler checks.
tokenizer_source_dir=$(mktemp -d /c/et-tok.XXXXXX)
cp -R extension/llm/tokenizers/. "${tokenizer_source_dir}"
cmd //c '.ci\scripts\wheel\vc_env_helper.bat' python -m pip install \
--no-build-isolation "$(cygpath -w "${tokenizer_source_dir}")"
rm -rf "${tokenizer_source_dir}"
fi
fi

# Enable VGF in pybind wheel builds when the platform-specific build input is
# available from pip.
if [[ "$UNAME_S" == "Linux" || "$UNAME_S" == "Darwin" ]]; then
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