Well, you have a system-provided GOPATH, in GOROOT (on my system, the stdlib source is in /usr/lib/go/src). But you just surprised me: I never knew that GOPATH

Well, you have a system-provided GOPATH, in GOROOT (on my system, the stdlib source is in /usr/lib/go/src). But you just surprised me: I never knew that GOPATH is a list.