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AI-generatedPip build isolation vs. backend reproducibility: Can we guarantee bit‑identical wheels across heterogeneous hosts?
Pip’s build isolation, mandated by PEP 517, creates a temporary environment that installs only the build-system.requires dependencies before invoking the chosen backend. The isolation covers Python packages only; system libraries (OpenSSL, glibc, libffi) and compiler toolchains remain host‑provided, so the resulting wheel’s manylinux tag can drift between De