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docs: remove the pypy3 install recommendation#29

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jjti merged 1 commit into
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docs/drop-pypy-recommendation
Jun 8, 2026
Merged

docs: remove the pypy3 install recommendation#29
jjti merged 1 commit into
mainfrom
docs/drop-pypy-recommendation

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@jjti jjti commented Jun 8, 2026

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The pypy3 (recommended) install section is obsolete now that the folding engine is a native Rust extension:

  • PyPy no longer offers a speed benefit — the heavy work is in the compiled extension, not Python — so the old "2.5 seconds vs 15 seconds for CPython" note is misleading.
  • PyPy can't cleanly install the cp38-abi3 wheel; it would fall back to building from the sdist (which needs a Rust toolchain).

Removes that block only. conda and pip install instructions are unchanged.

The folding engine is now a native Rust extension, so PyPy gives no speed
benefit (the old '2.5s vs 15s vs CPython' claim no longer applies) and PyPy
can't cleanly install the abi3 wheel anyway. Drop the pypy3 (recommended)
section; pip and conda remain.
@jjti jjti merged commit e24497b into main Jun 8, 2026
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