if pgoProfile != "" {
			return fmt.Errorf("action contains multiple PGO profile dependencies")
		}
		pgoProfile = a1.built
	}

	if p.Internal.BuildInfo != nil && cfg.ModulesEnabled {
		prog := modload.ModInfoProg(p.Internal.BuildInfo.String(), cfg.BuildToolchainName == "gccgo")
		if len(prog) > 0 {
			if err := sh.writeFile(objdir+"_gomod_.go", prog); err != nil {
				return err
			}

	"internal/goarch"
	"internal/goos"
	"internal/runtime/atomic"
	"internal/runtime/exithook"
	"internal/stringslite"
	"runtime/internal/sys"
	"unsafe"
)

// set using cmd/go/internal/modload.ModInfoProg
var modinfo string

// Goroutine scheduler
// The scheduler's job is to distribute ready-to-run goroutines over worker threads.
//
// The main concepts are:
// G - goroutine.
// M - worker thread, or machine.