Comment 2 for bug 1611503

Will this fix also be available for Trutsy? It also impacts that release:

user@host:~$ pip3 list
Exception:
Traceback (most recent call last):
  File "/usr/local/lib/python3.4/dist-packages/pkg_resources/_vendor/packaging/requirements.py", line 90, in __init__
    req = REQUIREMENT.parseString(requirement_string)
  File "/usr/local/lib/python3.4/dist-packages/pkg_resources/_vendor/pyparsing.py", line 1137, in parseString
    raise exc
  File "/usr/local/lib/python3.4/dist-packages/pkg_resources/_vendor/pyparsing.py", line 1127, in parseString
    loc, tokens = self._parse( instring, 0 )
  File "/usr/local/lib/python3.4/dist-packages/pkg_resources/_vendor/pyparsing.py", line 1001, in _parseNoCache
    loc,tokens = self.parseImpl( instring, preloc, doActions )
  File "/usr/local/lib/python3.4/dist-packages/pkg_resources/_vendor/pyparsing.py", line 2412, in parseImpl
    loc, exprtokens = e._parse( instring, loc, doActions )
  File "/usr/local/lib/python3.4/dist-packages/pkg_resources/_vendor/pyparsing.py", line 1001, in _parseNoCache
    loc,tokens = self.parseImpl( instring, preloc, doActions )
  File "/usr/local/lib/python3.4/dist-packages/pkg_resources/_vendor/pyparsing.py", line 2669, in parseImpl
    return self.expr._parse( instring, loc, doActions, callPreParse=False )
  File "/usr/local/lib/python3.4/dist-packages/pkg_resources/_vendor/pyparsing.py", line 1001, in _parseNoCache
    loc,tokens = self.parseImpl( instring, preloc, doActions )
  File "/usr/local/lib/python3.4/dist-packages/pkg_resources/_vendor/pyparsing.py", line 2395, in parseImpl
    loc, resultlist = self.exprs[0]._parse( instring, loc, doActions, callPreParse=False )
  File "/usr/local/lib/python3.4/dist-packages/pkg_resources/_vendor/pyparsing.py", line 1005, in _parseNoCache
    loc,tokens = self.parseImpl( instring, preloc, doActions )
  File "/usr/local/lib/python3.4/dist-packages/pkg_resources/_vendor/pyparsing.py", line 1785, in parseImpl
    raise ParseException(instring, loc, self.errmsg, self)
pkg_resources._vendor.pyparsing.ParseException: Expected W:(abcd...) (at char 0), (line:1, col:1)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.4/dist-packages/pkg_resources/__init__.py", line 2818, in __init__
    super(Requirement, self).__init__(requirement_string)
  File "/usr/local/lib/python3.4/dist-packages/pkg_resources/_vendor/packaging/requirements.py", line 94, in __init__
    requirement_string[e.loc:e.loc + 8]))
pkg_resources.extern.packaging.requirements.InvalidRequirement: Invalid requirement, parse error at "'-lxc==0.'"

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/pip/basecommand.py", line 122, in main
    status = self.run(options, args)
  File "/usr/lib/python3/dist-packages/pip/commands/list.py", line 80, in run
    self.run_listing(options)
  File "/usr/lib/python3/dist-packages/pip/commands/list.py", line 142, in run_listing
    self.output_package_listing(installed_packages)
  File "/usr/lib/python3/dist-packages/pip/commands/list.py", line 151, in output_package_listing
    if dist_is_editable(dist):
  File "/usr/lib/python3/dist-packages/pip/util.py", line 366, in dist_is_editable
    req = FrozenRequirement.from_dist(dist, [])
  File "/usr/lib/python3/dist-packages/pip/__init__.py", line 284, in from_dist
    req = dist.as_requirement()
  File "/usr/local/lib/python3.4/dist-packages/pkg_resources/__init__.py", line 2568, in as_requirement
    return Requirement.parse(spec)
  File "/usr/local/lib/python3.4/dist-packages/pkg_resources/__init__.py", line 2863, in parse
    req, = parse_requirements(s)
  File "/usr/local/lib/python3.4/dist-packages/pkg_resources/__init__.py", line 2811, in parse_requirements
    yield Requirement(line)
  File "/usr/local/lib/python3.4/dist-packages/pkg_resources/__init__.py", line 2820, in __init__
    raise RequirementParseError(str(e))
pkg_resources.RequirementParseError: Invalid requirement, parse error at "'-lxc==0.'"

Storing debug log for failure in /home/user/.pip/pip.log
user@host:~$
user@host:~$ pip --version
pip 8.1.2 from /usr/local/lib/python2.7/dist-packages (python 2.7)
user@host:~$