Description

On the mailing list, a user found that they couldn't install scikit-image from source:

https://mail.python.org/pipermail/scikit-image/2018-August/005621.html

It turned out that make clean fixed the problem. I myself have found recently that I need to make clean before pip install -U --no-deps -e . for almost any source update. I'm not sure which part of the build system needs to be fixed for this, but it certainly seems broken to me. Anyone else noticed this?