func init() {
	// break init cycle
	CmdBuild.Run = runBuild
	CmdInstall.Run = runInstall

	CmdBuild.Flag.StringVar(&cfg.BuildO, "o", "", "output file or directory")

	AddBuildFlags(CmdBuild, DefaultBuildFlags)
	AddBuildFlags(CmdInstall, DefaultBuildFlags)
	if cfg.Experiment != nil && cfg.Experiment.CoverageRedesign {
		AddCoverFlags(CmdBuild, nil)
		AddCoverFlags(CmdInstall, nil)
	}
}

	CmdClean.Flag.BoolVar(&cleanTestcache, "testcache", false, "")

	// -n and -x are important enough to be
	// mentioned explicitly in the docs but they
	// are part of the build flags.

	work.AddBuildFlags(CmdClean, work.DefaultBuildFlags)
}

func runClean(ctx context.Context, cmd *base.Command, args []string) {
	if len(args) > 0 {
		cacheFlag := ""
		switch {
		case cleanCache:
			cacheFlag = "-cache"

// We can't use (*flag.FlagSet).Parse because some of the flags from
// our command line are for us, and some are for the test binary, and
// some are for both.

func init() {
	work.AddBuildFlags(CmdTest, work.OmitVFlag)

	cf := CmdTest.Flag
	cf.BoolVar(&testC, "c", false, "")
	cf.StringVar(&testO, "o", "", "")
	work.AddCoverFlags(CmdTest, &testCoverProfile)

	generateSkipFlag string         // generate -skip flag
	generateSkipRE   *regexp.Regexp // compiled expression for -skip
)

func init() {
	work.AddBuildFlags(CmdGenerate, work.DefaultBuildFlags)
	CmdGenerate.Flag.StringVar(&generateRunFlag, "run", "", "")
	CmdGenerate.Flag.StringVar(&generateSkipFlag, "skip", "", "")
}

For more about specifying packages, see 'go help packages'.

For more about modules, see https://golang.org/ref/mod.
	`,
}

func init() {
	CmdList.Run = runList // break init cycle
	work.AddBuildFlags(CmdList, work.DefaultBuildFlags)
	if cfg.Experiment != nil && cfg.Experiment.CoverageRedesign {
		work.AddCoverFlags(CmdList, nil)
	}
	CmdList.Flag.Var(&listJsonFields, "json", "")
}

var (