PyConZA 2013: "Python in Debian & Ubuntu" by Stefano Rivera

This talk is aimed at people who maintain Python libraries and also users of Debian packaged libraries. (Wherever I say Debian in this abstract, it applies to Ubuntu too). The talk should explain a bit about how and why libraries are packaged in Debian, and how to help maintain (or contribute) packages you care about.

We'll cover a bit of history of the Python stacks in Debian and how packaged modules are provided, and who does the work. For context, we'll take a quick detour into Debian packaging in general, and the Debian project's lifecycle.

Debian recently gained a new Python packaging tool, pybuild. This finally makes it easy to package the same library for Python 2, 3, and even PyPy. So, we'll have a look at what it does, and some example packaging.

Transcript

1. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Python in Debian: History, Present, and how to help Stefano Rivera Yola 3 October 2013 Pycon ZA Stefano Rivera Python in Debian: History, Present, and how to help
2. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Outline 1 Debian 2 Ubuntu 3 CPython in Debian 4 The people 5 Modern Debian Python Packaging Stefano Rivera Python in Debian: History, Present, and how to help
3. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Debian Headcount Stefano Rivera Python in Debian: History, Present, and how to help
4. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Debian Packages Stefano Rivera Python in Debian: History, Present, and how to help
5. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Convenient installation Free Software is written by disparate groups Stefano Rivera Python in Debian: History, Present, and how to help
6. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Convenient installation Build systems Stefano Rivera Python in Debian: History, Present, and how to help
7. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Convenient installation Dependencies Stefano Rivera Python in Debian: History, Present, and how to help
8. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Coherent holistic product FHS Stefano Rivera Python in Debian: History, Present, and how to help
9. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Coherent holistic product Transition handling Stefano Rivera Python in Debian: History, Present, and how to help
10. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Debian Maintainers Stefano Rivera Python in Debian: History, Present, and how to help
11. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Maintainers (Debian specific) Stefano Rivera Python in Debian: History, Present, and how to help
12. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Maintainers Package Maintainers != DD / DM Stefano Rivera Python in Debian: History, Present, and how to help
13. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Debian is Feudal but meritocratic Stefano Rivera Python in Debian: History, Present, and how to help
14. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Maintainers Experts in a particular package Stefano Rivera Python in Debian: History, Present, and how to help
15. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Maintainers Teams Stefano Rivera Python in Debian: History, Present, and how to help
16. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Debian Release schedule Stefano Rivera Python in Debian: History, Present, and how to help
17. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Release schedule every ∼2 years, 3 support Stefano Rivera Python in Debian: History, Present, and how to help
18. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Outline 1 Debian 2 Ubuntu 3 CPython in Debian 4 The people 5 Modern Debian Python Packaging Stefano Rivera Python in Debian: History, Present, and how to help
19. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Ubuntu Relationship to Debian Stefano Rivera Python in Debian: History, Present, and how to help
20. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Relationship to Debian Supported core Stefano Rivera Python in Debian: History, Present, and how to help
21. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Relationship to Debian 70% entirely unmodified Debian Stefano Rivera Python in Debian: History, Present, and how to help
22. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Relationship to Debian Few new packages Stefano Rivera Python in Debian: History, Present, and how to help
23. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Relationship to Debian Smaller team Stefano Rivera Python in Debian: History, Present, and how to help
24. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Release schedule LTS: 2 year cycle, 5 year support Stefano Rivera Python in Debian: History, Present, and how to help
25. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Release schedule 6 month releases Stefano Rivera Python in Debian: History, Present, and how to help
26. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Release schedule Paid archive maintenance Fast transitions Often slightly ahead of Debian Stefano Rivera Python in Debian: History, Present, and how to help
27. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Outline 1 Debian 2 Ubuntu 3 CPython in Debian 4 The people 5 Modern Debian Python Packaging Stefano Rivera Python in Debian: History, Present, and how to help
28. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging CPython in Debian Interpreter Stefano Rivera Python in Debian: History, Present, and how to help
29. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging History Once upon a time, we had one Python in the archive Stefano Rivera Python in Debian: History, Present, and how to help
30. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging History Since python2 (2.0) transitions required 1 python Stefano Rivera Python in Debian: History, Present, and how to help
31. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging History Around 2.3, python-defaults Stefano Rivera Python in Debian: History, Present, and how to help
32. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging CPython in Debian Applications Stefano Rivera Python in Debian: History, Present, and how to help
33. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Applications Useful to package Stefano Rivera Python in Debian: History, Present, and how to help
34. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Applications Can be kept out of the import path Stefano Rivera Python in Debian: History, Present, and how to help
35. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging CPython in Debian Libraries Stefano Rivera Python in Debian: History, Present, and how to help
36. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Libraries for Applications Stefano Rivera Python in Debian: History, Present, and how to help
37. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging for Developers crazy build systems Stefano Rivera Python in Debian: History, Present, and how to help
38. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging for Developers C extensions Stefano Rivera Python in Debian: History, Present, and how to help
39. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging for Developers convenience Stefano Rivera Python in Debian: History, Present, and how to help
40. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Libraries Only one version Stefano Rivera Python in Debian: History, Present, and how to help
41. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging CPython in Debian History Stefano Rivera Python in Debian: History, Present, and how to help
42. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging ∼2.3, python-central handles common python problems, like byte compilation Stefano Rivera Python in Debian: History, Present, and how to help
43. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging ∼2.4, python-support technical solution to a social problem Stefano Rivera Python in Debian: History, Present, and how to help
44. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging ∼2.4, python-support automatic re-byte-compilation Stefano Rivera Python in Debian: History, Present, and how to help
45. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging ∼2.4, python-support interesting upgrade failures Stefano Rivera Python in Debian: History, Present, and how to help
46. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging ∼2.5, py3k mostly ignored Stefano Rivera Python in Debian: History, Present, and how to help
47. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging ∼3.2, dh python2 & 3 PEP3147: pycache Stefano Rivera Python in Debian: History, Present, and how to help
48. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging ∼3.2, dh python2 & 3 PEP3149: ABI tagging Stefano Rivera Python in Debian: History, Present, and how to help
49. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging ∼3.2, dh python2 & 3 PEP384: stable ABI Stefano Rivera Python in Debian: History, Present, and how to help
50. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging ∼3.2, dh python2 & 3 Ubuntu’s py3k push Stefano Rivera Python in Debian: History, Present, and how to help
51. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging ∼3.3, pybuild, PyPy One ”true” way Stefano Rivera Python in Debian: History, Present, and how to help
52. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Outline 1 Debian 2 Ubuntu 3 CPython in Debian 4 The people 5 Modern Debian Python Packaging Stefano Rivera Python in Debian: History, Present, and how to help
53. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging The people DPMT & PAPT Stefano Rivera Python in Debian: History, Present, and how to help
54. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Everything in SVN Git migration always on the agenda Stefano Rivera Python in Debian: History, Present, and how to help
55. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging DPMT & PAPT Knowledgeable people and sponsors Stefano Rivera Python in Debian: History, Present, and how to help
56. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging The people Want to help? Stefano Rivera Python in Debian: History, Present, and how to help
57. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Want to help? http://deb.li/joindpmt Stefano Rivera Python in Debian: History, Present, and how to help
58. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Want to help? Fix bugs! Stefano Rivera Python in Debian: History, Present, and how to help
59. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Want to help? Review things Stefano Rivera Python in Debian: History, Present, and how to help
60. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Want to help? Build infrastructure Stefano Rivera Python in Debian: History, Present, and how to help
61. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging The people Upstream maintainers Stefano Rivera Python in Debian: History, Present, and how to help
62. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Upstream maintainers Engage with your distro maintainers Stefano Rivera Python in Debian: History, Present, and how to help
63. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Upstream maintainers Join their team Stefano Rivera Python in Debian: History, Present, and how to help
64. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Upstream maintainers Subscribe to bugs Stefano Rivera Python in Debian: History, Present, and how to help
65. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Upstream maintainers Stable APIs Stefano Rivera Python in Debian: History, Present, and how to help
66. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Upstream maintainers Patience Stefano Rivera Python in Debian: History, Present, and how to help
67. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging The people Inactive Distro maintainers Stefano Rivera Python in Debian: History, Present, and how to help
68. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Inactive Distro maintainers Help Stefano Rivera Python in Debian: History, Present, and how to help
69. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Inactive Distro maintainers Take over Stefano Rivera Python in Debian: History, Present, and how to help
70. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Inactive Distro maintainers Request removal Stefano Rivera Python in Debian: History, Present, and how to help
71. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Outline 1 Debian 2 Ubuntu 3 CPython in Debian 4 The people 5 Modern Debian Python Packaging Stefano Rivera Python in Debian: History, Present, and how to help
72. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Modern Debian Python Packaging Fundamentals Stefano Rivera Python in Debian: History, Present, and how to help
73. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Source Package Upstream source + Patches Stefano Rivera Python in Debian: History, Present, and how to help
74. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Source Package RFC822-ish text files Stefano Rivera Python in Debian: History, Present, and how to help
75. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Source Package Except debian/rules: Make debian/changelog Stefano Rivera Python in Debian: History, Present, and how to help
76. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Build systems source -> binary* Stefano Rivera Python in Debian: History, Present, and how to help
77. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Build systems historical explicit (complex) Stefano Rivera Python in Debian: History, Present, and how to help
78. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Build systems dh Smart, Declarative Overrides Stefano Rivera Python in Debian: History, Present, and how to help
79. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Modern Debian Python Packaging pybuild Stefano Rivera Python in Debian: History, Present, and how to help
80. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging pybuild setup.py Stefano Rivera Python in Debian: History, Present, and how to help
81. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging pybuild all 3 python stacks Stefano Rivera Python in Debian: History, Present, and how to help
82. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging pybuild nose, py.test, unittest Stefano Rivera Python in Debian: History, Present, and how to help
83. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging pybuild dh plugin Stefano Rivera Python in Debian: History, Present, and how to help
84. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging examples unidecode Stefano Rivera Python in Debian: History, Present, and how to help
85. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging examples python-cffi Stefano Rivera Python in Debian: History, Present, and how to help
86. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Modern Debian Python Packaging We’re hiring Stefano Rivera Python in Debian: History, Present, and how to help
87. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging We’re hiring http://deb.li/joindpmt Stefano Rivera Python in Debian: History, Present, and how to help
88. Debian Ubuntu CPython in Debian The people Modern Debian Python Packaging Thanks! Questions? Stefano Rivera stefanor@debian.org http://tumbleweed.org.za/ Slides: Available at https://github.com/stefanor/talks Built using L ATEX Beamer Layout cribbed from Stefano Zacchiroli Copyright c 2013, Stefano Rivera License CC BY-SA 3.0 — Creative Commons Attribution-ShareAlike 3.0 Stefano Rivera Python in Debian: History, Present, and how to help