如何使用pip在Windows 7上使用MinGW-w64编译器来安装包?

I'm using Python 3.4.1 64 bit on Windows 7. When I tried to install scikit-image using pip, I ran into the popular problem: "unable to find vcvarsall.bat". I made sure that I have both Visual Studio 2009 and 2010 redistributable installed and also added VS90COMNTOOLS and VS100COMNTOOLS to environment variable. But that didn't help. The same error persisted. I'm using Python 3.4.1 64 bit on Windows 7. Whe