Problem using virtualenvwrapper on Windows with git bash

[julie777]

I found two issues that I want to report. I am sorry that I do not have the time to submit a pull request.

1. In the doc, it mentions that to use on Windows with MSYS that the MSYS_HOME variable needs to be set.
   In the Installation section under MSYS
   export MSYS_HOME=/c/msys/1.0
   On my system that needs to be
   export MSYS_HOME=/c/msys64/usr
   because there is no bin directory under msys64 so it needs /usr to be able to fins sh.exe in user_scripts.py _get_sys_shell()

This really just a doc problem, but I did have to go looking to find out why running postmkvirtualenv was failing in mkproject.

NOTE: I do think that MSYS_HOME as the variable name is not reflecting that it is needed for virtualenvwrapper.

2. There is a path issue when trying to connect the virtualenv to the project in mkproject. The issue is that python on windows, even running under bash uses Windows/non-posix style paths. This often leads to mixing of separators and the drive: prefix.

My fix was to remove the use of python to convert paths to absolute and expand vars, etc. Instead I switched to readlink. In the two functions: virtualenvwrapper_expandpath and virtualenvwrapper_absolutepath I just changed the the single line modifying the filepath variable.

    << "$VIRTUALENVWRAPPER_PYTHON" -c "import os,sys; ...
    >> readlink -f "$1"

I have confirmed that it works on MSYS and Debian.

Thanks for continuing to support the project!