[Bug 1581065] [NEW] incorrect parsing of != dependency versions

[James Page]

Public bug reported:

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)

** Affects: dh-python (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug yakkety

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

Title:
  incorrect parsing of != dependency versions

Status in dh-python package in Ubuntu:
  New

Bug description:
  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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