variable; otherwise it is public.

If no rules in the GOVCS variable match a particular module or import path,
the 'go get' command applies its default rule, which can now be summarized
in GOVCS notation as 'public:git|hg,private:all'.

To allow unfettered use of any version control system for any package, use:

	GOVCS=*:all

To disable all use of version control, use:

	GOVCS=*:off

	"cmd/go/internal/work"
	"cmd/internal/sys"

	cmdgo "cmd/go"
)

func init() {
	// GOVCS defaults to public:git|hg,private:all,
	// which breaks many tests here - they can't use non-git, non-hg VCS at all!
	// Change to fully permissive.
	// The tests of the GOVCS setting itself are in ../../testdata/script/govcs.txt.
	os.Setenv("GOVCS", "*:all")
}

var (
	canRace = false // whether we can run the race detector