Versioning Go binaries

Notes-about-versioning-Go.md

With a code like this:

package main

import "fmt"

var (
	version = "dev"
	commit  = "n/a"
	date    = "n/a"
)

func main() {
	fmt.Printf("%s, %s, %s\n", version, commit, date)
}

You can run a command like this:

go build --ldflags "-X 'main.version=$(git describe --tags)' -X 'main.date=$(date +%F)' -X 'main.commit=$(git rev-parse HEAD)'" app.go