Post-link script failed for new environment with qgrid on Win10

[leroygr]

Issue:

Cannot create new environment with qgrid on my Win10 machine:

$ conda create -n test qgrid

failed
ERROR conda.core.link:_execute(502): An error occurred while installing package 'conda-forge::qgrid-1.1.1-py37_1001'.
LinkError: post-link script failed for package conda-forge::qgrid-1.1.1-py37_1001
running your command again with `-v` will provide additional information
location of failed script: C:\Users\gle\AppData\Local\Continuum\anaconda3\envs\test\Scripts\.qgrid-post-link.bat
==> script messages <==
<None>

Attempting to roll back.

Rolling back transaction: done

LinkError: post-link script failed for package conda-forge::qgrid-1.1.1-py37_1001
running your command again with `-v` will provide additional information
location of failed script: C:\Users\gle\AppData\Local\Continuum\anaconda3\envs\test\Scripts\.qgrid-post-link.bat
==> script messages <==
<None>

Environment (conda list):

Not relevant has the environment creation fails due to error above

Details about conda and system ( conda info ):

$ conda info

     active environment : base
    active env location : C:\Users\gle\AppData\Local\Continuum\anaconda3
            shell level : 1
       user config file : C:\Users\gle\.condarc
 populated config files : C:\Users\gle\.condarc
          conda version : 4.5.11
    conda-build version : 3.15.1
         python version : 3.7.0.final.0
       base environment : C:\Users\gle\AppData\Local\Continuum\anaconda3  (writable)
           channel URLs : https://conda.anaconda.org/conda-forge/win-64
                          https://conda.anaconda.org/conda-forge/noarch
                          https://repo.anaconda.com/pkgs/main/win-64
                          https://repo.anaconda.com/pkgs/main/noarch
                          https://repo.anaconda.com/pkgs/free/win-64
                          https://repo.anaconda.com/pkgs/free/noarch
                          https://repo.anaconda.com/pkgs/r/win-64
                          https://repo.anaconda.com/pkgs/r/noarch
                          https://repo.anaconda.com/pkgs/pro/win-64
                          https://repo.anaconda.com/pkgs/pro/noarch
                          https://repo.anaconda.com/pkgs/msys2/win-64
                          https://repo.anaconda.com/pkgs/msys2/noarch
          package cache : C:\Users\gle\AppData\Local\Continuum\anaconda3\pkgs
                          C:\Users\gle\AppData\Local\conda\conda\pkgs
       envs directories : C:\Users\gle\AppData\Local\Continuum\anaconda3\envs
                          C:\Users\gle\AppData\Local\conda\conda\envs
                          C:\Users\gle\.conda\envs
               platform : win-64
             user-agent : conda/4.5.11 requests/2.19.1 CPython/3.7.0 Windows/10 Windows/10.0.17134
          administrator : False
             netrc file : None
           offline mode : False

[timkpaine]

fix in #37