Clarify on PyPI page that "--no-cython-compile" is only helpful if no wheels are used at all.

1587111f · Stefan Behnel · 8000fc57 · 1587111f
Commit 1587111f authored Apr 23, 2020 by Stefan Behnel
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setup.py setup.py +3 -2

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--- a/setup.py
+++ b/setup.py
@@ -248,8 +248,9 @@ setup(
    Python code.

    Note that for one-time builds, e.g. for CI/testing, on platforms that are not
-    covered by one of the wheel packages provided on PyPI, it is substantially faster
-    than a full source build to install an uncompiled (slower) version of Cython with::
+    covered by one of the wheel packages provided on PyPI *and* the pure Python wheel
+    that we provide is not used, it is substantially faster than a full source build
+    to install an uncompiled (slower) version of Cython with::

        pip install Cython --install-option="--no-cython-compile"