Use ICF for macOS release builds - #3709
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Reverts #3709 to see if this unblocks the release.
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Summary
Use Rust's bundled Mach-O LLD with
--icf=safefor macOS release builds.The workflow scopes the linker flags to the macOS wheel builds.
Related uv change: astral-sh/uv#19615
CI Results
Build binaries run: https://github.com/astral-sh/ty/actions/runs/27213899750
Measured with a same-commit A/B release build on a Namespace macOS ARM machine, using
maturin 1.13.3and Rust1.96. The x86_64 row was cross-built from the ARM machine.macos-x86_64macos-aarch64The binary size measures installed/on-disk impact; the wheel size measures network/download size.