> > > > how will context decide between the version being "dev" or "xdist-dev"? > > By whether you asked to install "pytest-xdist" or "pytest", and by > whether "dev" or "xdist-dev" match your version requirements. In > practice this tends to only be a problem if you are: > > 1. Installing the two packages during the same run, and > 2. Aren't using version specifiers. >
#2 is a big deal. the pip issue (#1192) that motivated this was a #2. local find-links with non-versioned requirements. so, suppose you have "pytest-xdist-dev.tar.gz" in a find-links location. whether you're trying to install "pytest" or "pytest-xdist" doesn't help the installer determine how to parse that archive.
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