[Python-modules-team] It seems pip -I is enabled by default?

Matti Picus matti.picus at gmail.com
Wed Jan 30 10:47:33 GMT 2019

We recently changed the directory layout of NumPy for release 1.16, 
which means that users must uninstall previous versions before 
upgrading. However it seems the python-pip package enables -I (ignore) 
by default[0]. Is there any way to get this behaviour returned to the 
pypa default? I see numerous reports [1,2] by users tripped up by this.


[0] https://github.com/numpy/numpy/issues/12736#issuecomment-457095173, 
see the diff on line 116-123

[1] https://github.com/pypa/pip/issues/4222

[2] https://github.com/numpy/numpy/issues/12878

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