Why IntelliJ Idea cannot find location of GO SDK?

Question

1. I downloaded go1.4.darwin-amd64-osx10.8.tar.gz and extract it on my local directory.
2. Based on what Installing to a custom location says I added GOROOT in env vari

Answer 1

Does not allow to use SDK placed in /usr/local/go (perfectly valid and recent SDK) under Mac Yosemite. Google App Engine does not recognise last valid GAE GO SDK either.