The background Golang is an awesome language, but I found it pretty unstable within the environment variables (at least in macOS Sierra/El Capitan). gvm is your friend btw, and it helped me to fix some of the issues by installing the latest release candidate of the 1.7.1 series. Keep in mind that if you want to upgrade your macOS to Sierra, you’ll need to backup all of your environment variables and reinstall gvm.