func oneMainPkg(pkgs []*load.Package) []*load.Package {
	if len(pkgs) != 1 || pkgs[0].Name != "main" {
		base.Fatalf("-buildmode=%s requires exactly one main package", cfg.BuildBuildmode)
	}
	return pkgs
}

var pkgsFilter = func(pkgs []*load.Package) []*load.Package { return pkgs }

func runBuild(ctx context.Context, cmd *base.Command, args []string) {
	modload.InitWorkfile()
	BuildInit()
	b := NewBuilder("")
	defer func() {

	}
	pkgs := load.PackagesAndErrors(ctx, pkgOpts, args)
	if !*listE {
		w := 0
		for _, pkg := range pkgs {
			if pkg.Error != nil {
				base.Errorf("%v", pkg.Error)
				continue
			}
			pkgs[w] = pkg
			w++
		}
		pkgs = pkgs[:w]
		base.ExitIfErrors()
	}

	if *listTest {
		c := cache.Default()

func main() {
	klog.InitFlags(nil)
	pflag.CommandLine.AddGoFlagSet(flag.CommandLine)
	pflag.Parse()

	pkgs, err := loadPkgs(pflag.Args()...)
	if err != nil {
		klog.Errorf("failed to load packages: %v", err)
	}

	pkgs = massage(pkgs)
	boss := newBoss(pkgs)

	var allErrs []error
	for _, pkg := range pkgs {
		if pkgErrs := boss.Verify(pkg); pkgErrs != nil {
			allErrs = append(allErrs, pkgErrs...)
		}
	}

}

func (mm *metaMerge) visitPackage(pd *decodemeta.CoverageMetaDataDecoder, pkgIdx uint32, pcombine bool) {
	p, ok := mm.pkm[pd.PackagePath()]
	if !ok {
		p = &pkstate{
			pkgIdx: uint32(len(mm.pkgs)),
		}
		mm.pkgs = append(mm.pkgs, p)
		mm.pkm[pd.PackagePath()] = p
		if pcombine {
			p.pcombinestate = new(pcombinestate)
			cmdb, err := encodemeta.NewCoverageMetaDataBuilder(pd.PackagePath(), pd.PackageName(), pd.ModulePath())

		"compress/flate.byLiteral.Less": true,
		"compress/flate.byLiteral.Swap": true,
	}

	notInlinedReason := make(map[string]string)
	pkgs := make([]string, 0, len(want))
	for pname, fnames := range want {
		pkgs = append(pkgs, pname)
		for _, fname := range fnames {
			fullName := pname + "." + fname
			if _, ok := notInlinedReason[fullName]; ok {
				t.Errorf("duplicate func: %s", fullName)

		case isExplicit[m]:
			io.WriteString(w, "## explicit\n")
		case goVersion != "":
			fmt.Fprintf(w, "## go %s\n", goVersion)
		}

		pkgs := modpkgs[m]
		sort.Strings(pkgs)
		for _, pkg := range pkgs {
			fmt.Fprintf(w, "%s\n", pkg)
			vendorPkg(vdir, pkg)
		}
	}

	if includeAllReplacements {
		// Record unused and wildcard replacements at the end of the modules.txt file:

// That is, the input a1 represents "go build pkgs" and the result represents "go build -buildmode=shared pkgs".
func (b *Builder) buildmodeShared(mode, depMode BuildMode, args []string, pkgs []*load.Package, a1 *Action) *Action {
	name, err := libname(args, pkgs)
	if err != nil {
		base.Fatalf("%v", err)
	}
	return b.linkSharedAction(mode, depMode, name, a1)
}

// as for the packages transitively imported by the package(s) in pkgs.
//
// pkgs may include any package pattern that is valid to pass to 'go list',
// so it may also be a list of Go source files all in the same directory.
func WriteImportcfg(t testing.TB, dstPath string, packageFiles map[string]string, pkgs ...string) {
	t.Helper()

	icfg := new(bytes.Buffer)
	icfg.WriteString("# import config\n")

	// TODO(mdempsky): Consider using some non-nil pointer to indicate
	// the universe scope, so we don't need to keep re-reading it.
	if pkg := pr.pkgs[idx]; pkg != nil {
		return pkg
	}

	pkg := pr.newReader(pkgbits.RelocPkg, idx, pkgbits.SyncPkgDef).doPkg()
	pr.pkgs[idx] = pkg
	return pkg
}

func (r *reader) doPkg() *types.Package {
	path := r.String()
	switch path {
	case "":
		path = r.p.PkgPath()

// type-checks.
func (c *stdlibChecker) getDirPackage(dir string) (*Package, error) {
	c.mu.Lock()
	fut, ok := c.pkgs[dir]
	if !ok {
		// First request for this package dir; type check.
		fut = &futurePackage{
			done: make(chan struct{}),
		}
		c.pkgs[dir] = fut
		files, ok := c.dirFiles[dir]
		c.mu.Unlock()
		if !ok {
			fut.err = fmt.Errorf("no files for %s", dir)
		} else {