Debian packaging

Python packaging in Debian

• https://wiki.debian.org/Teams/PythonModulesTeam
• https://wiki.debian.org/Teams/PythonAppsPackagingTeam
• http://python-modules.alioth.debian.org/python-modules-policy.html
• http://python-apps.alioth.debian.org/policy.html

Dependency tree for spreads

• colorama >= 0.2.4 ✅
• PyYAML >= 3.10 ✅
• futures >= 2.1 ✅
• blinker >= 1.3 ✅
• roman >= 2.0.0 ✅
• psutil >= 2.0.0 ✅
• isbnlib >= 3.3.8 https://github.com/xlcnd/isbnlib ☑️
• enum34 >= 1.0.3 ✅
• pathlib >= 1.0.1 ✅
• jpegtran-cffi >= 0.4 https://github.com/jbaiter/jpegtran-cffi ☑️

• cffi ✅
• libjpeg > 8 ✅

• chdkptp.py >= 0.1.3 https://github.com/jbaiter/chdkptp.py

• lua5.2 ✅
• libusb ✅
• lupa https://github.com/scoder/lupa
• chdkptp https://github.com/svn2github/chdkptp (patched!)
  • IUP http://www.tecgraf.puc-rio.br/iup/ (patched-out)
  • CD http://www.tecgraf.puc-rio.br/cd/ (patched-out)

• gphoto2-cffi >= 0.2 https://github.com/jbaiter/gphoto2-cffi ☑️

• python-cffi > 0.8 ✅
• python-enum34 > 1.0.1 ✅

• PySide >= 1.2.1 ✅
• hidapi-cffi >= 0.1 https://github.com/jbaiter/hidapi-cffi ☑️

• libhidapi-libusb0 ✅

• Flask >= 0.10.1 ✅
• requests >= 2.2.0 ✅
• zipstream >= 1.0.2 ☑️
• tornado >= 4.0 ✅
• Wand >= 0.3.5 ✅
• ScanTailor-enhanced http://sourceforge.net/p/scantailor/code/ci/enhanced/tree/
• pdfbeads https://github.com/ifad/pdfbeads

• ruby ✅
• jbig2enc
• ruby-rmagic ✅
• ruby-nokogiri ✅

• djvubind ✅

Legend:

• ✅ - already was packaged
• ☑️ - packaged
• 🔜 - to do before first Spreads release can be packaged

Problematic packages

Python-usb 1.0

• chdkcamera depends on pyusb 1.0b
• debian has pyusb 0.4.3 in sid
• Let's check the reverse dependencies for pyusb:

$ apt-cache rdepends python-usb
python-usb
Reverse Depends:
  python-usb:i386
  quisk
  python-yubico
  pymissile
  python-nxt
  python-expeyes

• quisk: exotic sound related usb hardware (popcon inst: 121, rank 25252, maintainer: "1.0b would be better for us")
• pymissile: Marks and Spencer usb toy missile control (popcon inst: 30, rank 46195, emailed maintainer)
• python-yubico: yubikey control (popcon inst: 30, rank 41165, maintainer: "1.0b would be better for us")
• python-nxt: lego nxt control (popcon inst:n/a, rank n/a, maintainer: "ok with experimental so I can test python-nxt with a pyusb 1.0 patch")
• python-expeyes: Expeyes box control Indian scientific experiments (popcon inst: n/a, maintainer: "please upload 1.0 to experimental or if not possible to mentors.debian.net so I can test")
• There is now a pyusb 1.0 in experimental

jbig2enc

• potential patent issues in the US according to ftpmaster
• https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=512518
• jbig1 expired already - https://github.com/agl/jbig2enc/blob/master/doc/PATENTS and http://www.cl.cam.ac.uk/~mgk25/jbigkit/patents/
• jbig2 expiration also clear: spec from 1999, Korean patent from 1997 referenced in spec - patent application 10-1997-0068093 (10-97-068093), granted in 2001 as 10-0312810-0000, expired in 2004. 10. 13 due to "Non-payment of Registration Fee"

pdfbeads

• pdfbeads does the pdf generation and ocr layer integration
• https://github.com/ifad/pdfbeads/blob/master/bin/pdfbeads#L98-L105 : it compresses using jbig2enc by default, with ccitt g4 compression as a fallback
• g4 might be our only option to get this into debian if the patent is still actively enforced
• patch in a warning about missing jbig2enc? that might be a good hint, and is easily feasible. See https://github.com/DIYBookScanner/spreads/issues/145#issuecomment-58624657 .