How to get all dependency files for a program
Solution 1:
You can run go get -d ./... from a directory of your project to download all go-gettable dependencies.
Or copy all src subdirectory from your GOPATH to the destination machine.... is a special pattern, tells to go down recursively.
Solution 2:
Try
go list -f '{{ join .Imports "\n" }}'
or
go list -f '{{ join .Deps "\n" }}'
The second will list all subdependencies, the first only the directly imported packages.