I have two local git repositories. Both are go modules. Call
them, foo.com/one and foo.com/two. Both have go.mod files
declaring themselves to be, respectively, foo.com/one and
foo.com/two based on go 1.15.
I want to use a package from one in the other.
import "foo.com/one/pkg/thing1"
Short of publishing one of them on github, how do I do that? Do
I need to copy or symlink something? Set some environment
variables?