giddyup is a tool that can be used as a go generate command (see main.go) or a standalone CLI to manage release versions of a golang application.
giddyup assumes a version.go file with a VERSION constant such. When executed with the default options, giddyup reads the current version and increments the patch-level in version.go. Since the file is meant to be managed by giddyup, interactions with it should be done using giddyup only. To initialize the version, you can run giddyup --init in your repository which will generate a version.go with the VERSION set to 1.0.0.
An application can then print its version using the VERSION string constant.
Example using kingpin:
kingpin.Version(VERSION)
giddyup itself uses giddyup for managing its version. This is done by adding the following line to main.go:
//go:generate giddyup