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Here's a bit of a clue to how it works:

    ./python 
    Python 3.11.4 (heads/pypack1:65ac8ac, Oct 16 2023, 02:35:05) [GCC 11.2.0] on linux
    Type "help", "copyright", "credits" or "license" for more information.
    >>> import sqlite3
    >>> sqlite3
    <module 'sqlite3' from '/zip/Lib/sqlite3/__init__.pyc'>
    >>> import pathlib
    >>> list(pathlib.Path("/zip").glob("*"))
    [PosixPath('/zip/.symtab.amd64'), PosixPath('/zip/.symtab.arm64'), PosixPath('/zip/usr'), PosixPath('/zip/.cosmo'), PosixPath('/zip/Lib'), PosixPath('/zip/build')]
From Python's point of view there a "/zip/" folder with stuff in it, presumably stuff that's hidden inside the fat binary.



Yup, this is basically it. If you check out the "Actually Portable Executable" blogpost by the same author [1] and go to the "PKZIP Executables Make Pretty Good Containers" section there's a note on the approach.

1: https://justine.lol/ape.html


absolutely impressive


The "/zip/" folder refers to the ZIP store inside the actually portable executable -- you can run `unzip -vl ./python` to see what's inside.

Also, to add new pure-python packages, you just need to unzip them into a local folder "./Lib", and add that folder to the APE.




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