Windows wheel collection overhaul: pre-warm cache, Winsock env fix, ARM64 native install

flavorpack 2026-03-25

19 files · 2,371+ · 1,057-

1 file changed

uv_manager.py Added _windows_system_env() helper that returns SYSTEMROOT, WINDIR, and related vars; passed as env= to all pip/uv subprocesses on Windows so Winsock DLL paths resolve

provide.foundation scrubs subprocess environments to a safe allowlist that excludes SYSTEMROOT/WINDIR. Without these, Windows cannot find Winsock service-provider DLL paths (stored as %SystemRoot%\system32...) causing every socket call including getaddrinfo to fail with errno 11001. _windows_system_env() returns the required system vars as a trusted caller override merged into the scrubbed env. No-op on non-Windows. remediate behavioral
1 file
- uv_manager.py

6 files changed

prewarm-wheel-cache.sh 133-line script: uses uv pip install (Rust HTTP) to download packages into a local .whl cache, sets FLAVOR_WHEEL_CACHE env in GITHUB_ENV for downstream flavor build steps
install-flavor-wheel.sh 42-line script: installs flavorpack wheel from artifact or falls back to pip install
uv_manager.py download_wheels_offline() now checks FLAVOR_WHEEL_CACHE env var for a pre-warmed cache dir; uses pip --no-index --find-links against that dir instead of uv's internal cache
02-pretaster-pipeline.yml Added pre-warm step before flavor build; force x64 Python for uv tool install on windows_arm64
03-flavor-pipeline.yml Added pre-warm step; updated for FLAVOR_WHEEL_CACHE strategy
04-taster-pipeline.yml Updated for pre-warm strategy

On Windows GHA runners, Python subprocess urllib3 cannot reach PyPI but uv’s Rust HTTP client can. prewarm-wheel-cache.sh uses uv pip install to pre-download packages via uv’s Rust HTTP client, then collects .whl files into a local cache dir. The flavor build subprocess then uses pip –no-index –find-links (no network required) from that cache. instantiate behavioral
2 files
- prewarm-wheel-cache.sh
- uv_manager.py

1 file changed

uv_manager.py Added logic to convert UV archive-v0 cache entries (normalized wheel archives) back into standard .whl zip files that pip can consume via --find-links

UV stores cached wheels in an archive-v0 format (content-addressed, normalized). When building the pre-warm cache, these must be re-zipped into standard .whl files for pip’s –no-index –find-links mode to recognize them. Added conversion step in the cache collection logic. remediate behavioral
1 file
- uv_manager.py

4 files changed

03-flavor-pipeline.yml Install flavorpack natively on ARM64 (not via Rosetta x64 Python)
pyproject.toml Pinned cryptography<=46.0.3 for windows_arm64 binary wheel compatibility
pypapip_manager.py Updated for ARM64 pip compatibility
workenv.py Close file handle before PE resource embedding to prevent locks

Flavorpack now installs natively on ARM64 Windows rather than using the x64 Rosetta Python path. cryptography pinned to <=46.0.3 to ensure a binary wheel is available for windows_arm64. File handle closed before PE resource embedding step to prevent Windows file locks. remediate behavioral
3 files
- 03-flavor-pipeline.yml
- pyproject.toml
- workenv.py

7 files changed

Extracted install-flavor-wheel.sh and prewarm-wheel-cache.sh from inline YAML in workflows. Pretaster matrix and test scripts updated for new ARM64 and wheel cache strategy. decouple internal
3 files
- install-flavor-wheel.sh
- prewarm-wheel-cache.sh
- build-pretaster.sh