This change should make new tarballs uploaded to pypi include various nice pieces: - The README - The LICENSE - The tests The text of the license actually specifies that the full text must be distributed with all copies of the software. So, you need it to be in compliance with the MIT license. The README is just nice to have, and the tests are particularly nice for my use case. I am packaging vcrpy for inclusion in the Fedora linux distribution and: - We like to use the tarball from pypi because it is the same source distribution that everyone else is using. - We like to run the tests before we build the rpm in our build system to make sure nothing crazy is going on. Of course, we can use the tarball for the source and then do a second step to clone the source and get the tests. But, this is more work than we like if we can just get the tests added to the tarball. Other distributions (like Debian) like this too.