Packages are a language-level concept in Python. A package may be a collection of source files on the filesystem, it's still a package, except that doesn't lend itself well to distribution. Moreover, from the language standpoint, the usage of a package (like "import numpy") is the same on all architectures, but the files needed for distribution (native extension module binaries) may differ.
Python is rife with Monty Python references, such as "spam and eggs" in place of "foo and bar", so "egg" was a natural choice.
> Wheels are the new standard of Python distribution and are intended to replace eggs.
Ahhh... ???