code: func InstallBuildRequirements() error {
  	spartamage.Log("`go get` update flags (env.GO_GET_FLAG): %s", os.Getenv("GO_GET_FLAG"))
  
  	requirements := []string{
  		"github.com/golang/dep/...",
  		"honnef.co/go/tools/...",
  		"golang.org/x/tools/cmd/goimports",
  		"github.com/fzipp/gocyclo",
  		"golang.org/x/lint/golint",
  		"github.com/mjibson/esc",
  		"github.com/securego/gosec/cmd/gosec/...",
  		"github.com/alexkohler/prealloc",
  		"github.com/client9/misspell/cmd/misspell",
  	}
  	for _, eachDep := range requirements {
  		cmdErr := sh.Run("go",
  			"get",
  			os.Getenv("GO_GET_FLAG"),
  			eachDep)
  		if cmdErr != nil {
  			return cmdErr
  		}
  	}
  	return nil
  }
docs: // InstallBuildRequirements installs or updates the dependent
  // packages that aren't referenced by the source, but are needed
  // to build the Sparta source