Jazzband - News - Sunsetting J...
The "packages aren't specified to hold an exclusive lock on installing a given filename, so we just blindly overwrite stuff" bit is so painful.
Every distro package manager seems to be able to specify this just fine. As far as I can tell, in #pypa land it's simply considered a feature so that... two packages can depend on alternately, PIL and Pillow (or whichever fork story you like), and both dependencies are satisfied even though only the last one is actually installed.

