How to run under gomod

[caibirdme]

the project layout is blow:

-myProject
  -libA
  -cmd
    -server
      -main.go
    -client
      -main.go
  -libB
  -go.mod
  -go.sum

When I run cd myProject && goreporter -p ., it warns me that:

package myProject/cmd/server is not in GOROOT
package myProject/cmd/client is not in GOROOT
package myProject/libA is not in GOROOT
package myProject/libB is not in GOROOT

How could I fix this?

[lhlyu]

link