Go has released a new dependency tool called go mod, it creates a file called go.mod and eliminates the need for GOPATH dependencies in Go. This simplifies the build process and bring a single point of contact to control versions. Revel has embraced this idea and added a new flag called --gomod-flags which allows you to interact directly with the go.mod before the project is built/packaged/run or tested. For ideas on usage of the go mod here are some commands commands

An example to change to use the develop branch

 revel build   --gomod-flags "edit" -a my_gocode -t build/my_gocode