[Python-modules-team] Bug#823591: pep8 - Need stricter dependencies: pkg_resources.VersionConflic

[Bastian Blank]

Package: pep8
Version: 1.7.0-2
Severity: serious

pep8 fails to run if python3-pep8 and pep8 does not agree on the
version:

| $ pep8
| Traceback (most recent call last):
|   File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 661, in _build_master
|     ws.require(__requires__)
|   File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 962, in require
|     needed = self.resolve(parse_requirements(requirements))
|   File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 854, in resolve
|     raise VersionConflict(dist, req).with_context(dependent_req)
| pkg_resources.VersionConflict: (pep8 1.6.2 (/usr/lib/python3/dist-packages), Requirement.parse('pep8==1.7.0'))
| 
| During handling of the above exception, another exception occurred:
| 
| Traceback (most recent call last):
|   File "/usr/bin/pep8", line 5, in <module>
|     from pkg_resources import load_entry_point
|   File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 3138, in <module>
|     @_call_aside
|   File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 3124, in _call_aside
|     f(*args, **kwargs)
|   File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 3151, in _initialize_master_working_set
|     working_set = WorkingSet._build_master()
|   File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 663, in _build_master
|     return cls._build_from_requirements(__requires__)
|   File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 676, in _build_from_requirements
|     dists = ws.resolve(reqs, Environment())
|   File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 849, in resolve
|     raise DistributionNotFound(req, requirers)
| pkg_resources.DistributionNotFound: The 'pep8==1.7.0' distribution was not found and is required by the application

The package dependency needs to specify a version.

Bastian

-- System Information:
Debian Release: stretch/sid
  APT prefers testing-updates
  APT policy: (500, 'testing-updates'), (500, 'testing'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.3.0-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages pep8 depends on:
ii  python3-pep8  1.6.2-0.1
pn  python3:any   <none>

pep8 recommends no packages.

pep8 suggests no packages.

-- no debconf information

-- 
Bastian Blank
Berater
Telefon: +49 2166 / 9901-194
E-Mail: bastian.blank at credativ.de
credativ GmbH, HRB Mönchengladbach 12080, USt-ID-Nummer: DE204566209
Trompeterallee 108, 41189 Mönchengladbach
Geschäftsführung: Dr. Michael Meskes, Jörg Folz, Sascha Heuer