This article by Ben Johnson has guided me on this when I was starting with Go. It’s generally good to start with something like this (assuming you are inside your project directory like $GOPATH/src/myproject: ├──cmd/ — this is where you compose several packages in to main package | ├──foo — an example would be `foo` … Read more
I had the same issue and solved setting specific env variable export GO111MODULE=on in my .zshrc(or .bashrc depending on which shell you use) and restart the shell in order to enable modules. You can find more details here: https://github.com/golang/go/wiki/Modules
GOPATH is discussed in the cmd/go documentation: The GOPATH environment variable lists places to look for Go code. On Unix, the value is a colon-separated string. On Windows, the value is a semicolon-separated string. On Plan 9, the value is a list. GOPATH must be set to get, build and install packages outside the standard … Read more