AlenkaF commented on a change in pull request #11505:
URL: https://github.com/apache/arrow/pull/11505#discussion_r745384095
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File path: docs/source/developers/python.rst
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@@ -344,8 +349,11 @@ Now, build pyarrow:
python setup.py build_ext --inplace
popd
-If you did not build one of the optional components, set the corresponding
-``PYARROW_WITH_$COMPONENT`` environment variable to 0.
+If you did build one of the optional components (in C++), you need to set the
+corresponding ``PYARROW_WITH_$COMPONENT`` environment variable to 1.
+
+If you wish to delete pyarrow build before rebuilding navigate to the
``arrow/python``
+folder and run ``python setup.py clean``.
Review comment:
Adding both possibilities here also?
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