UnicodeDecodeError in pip's file

[LotosikRa]

• Pip version: 8.1.2
• Python version: 3.4.4 x32 (installed with x86 MSI installer (bottom of the table))
• Operating System: Windows 10 x64

Description:

I'm trying to install some packeges inside virtual environment. I have activated venv. pip list shows me list of system packeges and I decided to use python -m pip.

What I've run:

Note venv is isnside my directory (that contains slavic characters) so I have replaced it with <>.

(.venv) C:\Users\<>\Documents\ansible-flask-restful-local>.venv\Scripts\python -m pip install ipython==5.0.0
Requirement already satisfied (use --upgrade to upgrade): wcwidth in c:\users\<>\documents\ansible-flask-restful-local\.venv\lib\site-packages (from prompt-tool
kit<2.0.0,>=1.0.3->ipython==5.0.0)
Requirement already satisfied (use --upgrade to upgrade): six>=1.9.0 in c:\users\<>\documents\ansible-flask-restful-local\.venv\lib\site-packages (from prompt-t
oolkit<2.0.0,>=1.0.3->ipython==5.0.0)
Requirement already satisfied (use --upgrade to upgrade): ipython-genutils in c:\users\<>\documents\ansible-flask-restful-local\.venv\lib\site-packages (from tr
aitlets>=4.2->ipython==5.0.0)
Requirement already satisfied (use --upgrade to upgrade): markupsafe in c:\users\<>\documents\ansible-flask-restful-local\.venv\lib\site-packages (from Jinja2>=
2.4->Flask==0.10.1)
Installing collected packages: ipython, PyJWT, Flask
  Found existing installation: ipython 5.1.0
Exception:
Traceback (most recent call last):
  File "C:\Users\<>\Documents\ansible-flask-restful-local\.venv\lib\site-packages\pip\basecommand.py", line 215, in main
    status = self.run(options, args)
  File "C:\Users\<>\Documents\ansible-flask-restful-local\.venv\lib\site-packages\pip\commands\install.py", line 317, in run
    prefix=options.prefix_path,
  File "C:\Users\<>\Documents\ansible-flask-restful-local\.venv\lib\site-packages\pip\req\req_set.py", line 736, in install
    requirement.uninstall(auto_confirm=True)
  File "C:\Users\<>\Documents\ansible-flask-restful-local\.venv\lib\site-packages\pip\req\req_install.py", line 695, in uninstall
    for path in pip.wheel.uninstallation_paths(dist):
  File "C:\Users\<>\Documents\ansible-flask-restful-local\.venv\lib\site-packages\pip\wheel.py", line 535, in unique
    for item in fn(*args, **kw):
  File "C:\Users\<>\Documents\ansible-flask-restful-local\.venv\lib\site-packages\pip\wheel.py", line 554, in uninstallation_paths
    r = csv.reader(FakeFile(dist.get_metadata_lines('RECORD')))
  File "C:\Users\<>\Documents\ansible-flask-restful-local\.venv\lib\site-packages\pip\_vendor\pkg_resources\__init__.py", line 1477, in get_metadata_lines
    return yield_lines(self.get_metadata(name))
  File "C:\Users\<>\Documents\ansible-flask-restful-local\.venv\lib\site-packages\pip\_vendor\pkg_resources\__init__.py", line 1474, in get_metadata
    return self._get(self._fn(self.egg_info, name)).decode("utf-8")
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xc8 in position 27887: invalid continuation byte

[pfmoore]

This should now be fixed by #4486, which is now available in the development version of pip and will be released in pip 10. I am closing this issue, but if you are still able to reproduce the problem in the development version of pip, please reopen it with a description of now to replicate the issue.