[$] A survey of the Python packaging landscape

Over the past several months, there have been wide-ranging discussions inthe Python community about difficulties users have with installing packagesfor the language. There is a bewildering array of options forpackage-installation tools and Python distributions focused on particular usecases (e.g. scientific computing); many of those options do notinteroperate well-or at all-so they step on each others' toes.The discussions have focused on where solutions might be found to make iteasier on users, but lots of history and entrenched use cases need to beovercome in order to get there-or even to make progress in that direction.