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[Launchpad Bug Tracker <1581065@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package dh-python - 2.20151103ubuntu1.1

---------------
dh-python (2.20151103ubuntu1.1) xenial; urgency=medium

  * dhpython/pydist.py: Ensure that != dependency versions are ignored
    (LP: #1581065).

 -- James Page <james.page@xxxxxxxxxx>  Thu, 12 May 2016 17:04:43 +0100

** Changed in: dh-python (Ubuntu Xenial)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1581065

Title:
  incorrect parsing of != dependency versions

Status in dh-python package in Ubuntu:
  Fix Released
Status in dh-python source package in Xenial:
  Fix Released
Status in dh-python source package in Yakkety:
  Fix Released

Bug description:
  [Impact]
  dh-python incorrectly used != version operators in some cases, resulting in failed package builds; this impacts a number of stable updates for Xenial which blacklist a specific cryptography version.

  [Test Case]
  Build stable release of glance/keystone/nova for xenial/mitaka (parse problem in original bug report)

  [Regression Potential]
  Testing OK in yakkety; change is minimal and ensures != operator is ignored when detected.

  [Original Bug Report]
  Some updates to requirements for openstack projects (glance and keystone specifically) is causing dh-python to incorrectly generate a != version dependency; this is the requires.txt entry:

   cryptography!=1.3.0,>=1.0

  which causes (utimately):

  dpkg-gencontrol: warning: can't parse dependency python-cryptography
  (!= 1.3.0)

  from the generated dependency line:

  "python-castellan, python-crypto (>= 2.6), python-cryptography (!=
  1.3.0), python-debtcollector, python-eventlet, python-futurist,
  python-glance-store, python-httplib2, python-iso8601, python-
  jsonschema, python-keystoneauth1, python-keystoneclient, python-
  keystonemiddleware, python-migrate, python-monotonic, python-openssl,
  python-oslo.concurrency, python-oslo.config, python-oslo.context,
  python-oslo.db, python-oslo.i18n, python-oslo.log, python-
  oslo.messaging, python-oslo.middleware, python-oslo.policy, python-
  oslo.serialization, python-oslo.service, python-oslo.utils, python-
  osprofiler, python-paste, python-pastedeploy, python-pbr, python-
  prettytable, python-retrying, python-semantic-version, python-six (>=
  1.9.0), python-sqlalchemy (>= 1.0~), python-sqlalchemy (<< 1.1),
  python-stevedore, python-taskflow, python-webob, python-wsme,
  python:any (<< 2.8), python:any (>= 2.6~), python:any (>= 2.7.5-5~),
  python:any (>= 2.7~),"

  ProblemType: Bug
  DistroRelease: Ubuntu 16.10
  Package: dh-python 2.20151103ubuntu1
  ProcVersionSignature: Ubuntu 4.4.0-22.39-generic 4.4.8
  Uname: Linux 4.4.0-22-generic x86_64
  NonfreeKernelModules: zfs zunicode zcommon znvpair zavl
  ApportVersion: 2.20.1-0ubuntu3
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Thu May 12 15:15:36 2016
  Dependencies:

  EcryptfsInUse: Yes
  InstallationDate: Installed on 2016-01-17 (115 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160117)
  PackageArchitecture: all
  SourcePackage: dh-python
  UpgradeStatus: No upgrade log present (probably fresh install)

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