[Bug 597041] Re: No way to get from binary package to source package

[Colin Watson]

I've changed my position on this a little: auto-sync in practice copes
most of the time, and most users only need a way to get to a single
corresponding SPPH, so I think it's better to just introduce
BPPH.getPublishedSource() rather than complicating things for a rare
corner case.

It looks like I need this as part of the ddeb-retriever work I'm doing
at the moment (or, at least, it's probably going to be rather
complicated and slow to work around not having this), so I'll take it.

** Changed in: launchpad
       Status: Triaged => In Progress

** Changed in: launchpad
     Assignee: (unassigned) => Colin Watson (cjwatson)

** No longer affects: python-launchpadlib (Ubuntu)

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https://bugs.launchpad.net/bugs/597041

Title:
  No way to get from binary package to source package

Status in Launchpad itself:
  In Progress

Bug description:
  Binary package hint: python-launchpadlib

  This is basically the same bug as bug #53171, but for the Launchpad
  API:

  There should be a way to either determine the "source_package" object
  or the "source_package_publishing_history" object when having a
  "binary_package_publishing_history" object.

  One could (for example) parse the launchpad page
  https://launchpad.net/ubuntu/maverick/i386/libgtk2.0-0 for the link to
  https://launchpad.net/ubuntu/+source/gtk+2.0 or run "dpkg-query -W
  -f='${Source}' libgtk2.0-0", but a API call would be very handy.

  Some attribute like "source_package_name" would also suffice, but
  "getSourcePackage()" or "getSourcePackagePublishingHistory()" would be
  really great.

  ProblemType: Bug
  DistroRelease: Ubuntu 10.10
  Package: python-launchpadlib 1.6.0-0ubuntu1
  ProcVersionSignature: Ubuntu 2.6.35-4.5-generic 2.6.35-rc3
  Uname: Linux 2.6.35-4-generic x86_64
  NonfreeKernelModules: nvidia
  Architecture: amd64
  Date: Mon Jun 21 23:20:44 2010
  InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Alpha amd64 (20100602.2)
  PackageArchitecture: all
  ProcEnviron:
   PATH=(custom, user)
   LANG=en_US.utf8
   SHELL=/bin/bash
  SourcePackage: python-launchpadlib

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