We Store Cheese in A Warehouse

Context of this talk: https://speakerdeck.com/uranusjr/we-buy-cheese-in-a-cheese-shop

What Python Packaging went through in the past few years, how it is at year 2017, and looking ahead.

Transcript

1. We Store Cheese in the Warehouse
4. http://lucumr.pocoo.org/2012/6/22/hate-hate-hate-everywhere/
6. Party Like It’s 2012 • Setuptools • site and .pth files • Eggs
7. Setuptools • Package metadata • Dependency resolution! • easy_install
8. LIAR!!!1
10. .pth • Path configuration file • Placed in site-packages • Populate sys.path at runtime
11. A PIL Tutorial >>> import Image >>> im = Image.open("louie.jpg") >>> im.show() https://gist.github.com/bradmontgomery/3125124 ?
12. $ ls $LIB/python2.7/site-packages PIL pkg_resources PIL.pth setuptools easy_install.py setuptools-36.5.0.dist-info easy_install.pyc wheel pip wheel-0.30.0.dist-info pip-9.0.1.dist-info
13. >>> import Image >>> print(Image.__file__) lib/python2.7/site-packages/PIL/Image.pyc >>> import sys >>> for path in sys.path: ... print path ... (more...) lib/python2.7/site-packages/PIL (more...)
14. $ ls $LIB/python2.7/site-packages PIL pkg_resources PIL.pth setuptools easy_install.py setuptools-36.5.0.dist-info easy_install.pyc wheel pip wheel-0.30.0.dist-info pip-9.0.1.dist-info This
15. PTH FILES PTH FILES EVERYWHERE
22. Now
23. PyPA’s Schedule • Merge back Distribute • New binary format (wheel) • Built-in Setuptools and Pip • Better Security
26. HTTPS support on PyPI
27. https://packaging.python.org
28. Next
29. Package Author Server User
30. https://pypi.org
31. https://github.com/pypa/warehouse
32. Package Author Server User
33. https://pipenv.org
34. Pipfile • “Requirements 2.0” • Eventual pip -p integration • https://github.com/pypa/pipfile
35. Pipfile • The “lock” concept • PEP 508 environment markers • Robust file format
36. Package Author Server User
37. SETUP.PY INSTALL MUST DIE
39. setup.py • Ad-hoc executable is always wrong • Don’t know what will happen until they actually happen • Wrong assumptions on top of wrong assumptions
40. https://en.wikipedia.org/wiki/Catch-22_(logic)
41. pyproject.toml • Declarative data file • PEP 508 for requirement specification • Eventual support in Pip
42. Summary • Use Pipenv to manage projects • Use modern tools to distribute packages • Adopt PEP 508, prepare for PEP 518
43. Summary • A lot can happen in five years • PyPA rocks, please help them • Looking forward to the next five!