Using go mod vendor

With an existing module

• copy go.mod and go.sum files from the offline PC to the internet PC

New module

• create a folder on machine with internet access
• create a go module : go mod init offline

Download dependencies via vendor folder

• create a offline_modules.go file :

touch offline_modules.go

• add the dependencies you want to download (use _) :

package offline_modules

import (
	_ "github.com/gorilla/mux"
	_ "github.com/sirupsen/logrus"
)

func main() {}

• To download dependencies, run:

go mod vendor

• the vendor folder should have new folders in it representing dependencies

Back to offline

• copy go.mod, go.sum and vendor directory to offline machine
• run your go commands with the flag -mod=vendor like:

go run -mod=vendor main.go