Upgrade setuptools on appveyor

Benoit Hudson · Benoit Hudson · commit 8a80fd5d643e · 2018-10-11T14:46:24.000-04:00
I'm hoping this will allow finding MSVC for python 3.4?
diff --git a/appveyor.yml b/appveyor.yml
@@ -38,7 +38,9 @@ init:
   - set PATH=%PYTHON%;%PYTHON%\Scripts;%PATH%
 
 install:
+  # Upgrade setuptools to find MSVC. Otherwise you get "error: Microsoft Visual C++ 10.0 is required (Unable to find vcvarsall.bat)."
   - python -m pip install -U pip
+  - pip install --upgrade setuptools
   - pip install --upgrade -r requirements.txt
 
   # Install OpenCover. Can't put on `packages.config`, not Mono compatible
