env TESTGO_VERSION=go1.500
env TESTGO_VERSION_SWITCH=mismatch

# go env GOMOD should not trigger a toolchain download
cd $GOPATH/mod
go env GOMOD
stdout mod[/\\]go.mod
! stderr 'go: toolchain go1.500 invoked to provide go1.700'

# go env GOWORK should not trigger a toolchain download
cd $GOPATH/work
go env GOWORK
stdout work[/\\]go.work
! stderr 'go: toolchain go1.500 invoked to provide go1.700'

-- $GOPATH/mod/go.mod --

# list {{.Dir}} shows replaced directories
cp go.mod2 go.mod
go list -mod=mod -f {{.Dir}} rsc.io/quote
go list -m -f '{{.Path}} {{.Version}} {{.Dir}}{{with .Replace}} {{.GoMod}} => {{.Version}} {{.Dir}} {{.GoMod}}{{end}}' all
stdout 'mod[\\/]rsc.io[\\/]quote@v1.5.1'
stdout 'v1.3.0.*mod[\\/]rsc.io[\\/]sampler@v1.3.1 .*[\\/]v1.3.1.mod => v1.3.1.*sampler@v1.3.1 .*[\\/]v1.3.1.mod'

# list std should work
go list std

# Configures Depdendabot to PR go security updates only

version: 2
updates:
  # Go configuration for master branch
  - package-ecosystem: "gomod"
    directory: "/"
    schedule:
      interval: "daily"
    # Limit number of open PRs to 0 so that we only get security updates
    # See https://docs.github.com/en/code-security/dependabot/dependabot-security-updates/configuring-dependabot-security-updates
    open-pull-requests-limit: 0
    labels:

! go run  example.com/b
stderr 'a(\\|/)a.go:4:8: no required module provides package rsc.io/quote; to add it:\n\tcd '$WORK(\\|/)gopath(\\|/)src(\\|/)a'\n\tgo get rsc.io/quote'
cd a
go get rsc.io/quote
cat go.mod
go env GOMOD # go env GOMOD reports the module in a single module context
stdout $GOPATH(\\|/)src(\\|/)a(\\|/)go.mod
cd ..
go run example.com/b
stdout 'Hello, world.'

# And try from a different directory
cd c
go run  example.com/b

	testenv.MustHaveGoRun(t)
	t.Parallel()

	const pkg = "example.com/pgo/devirtualize"

	// Add a go.mod so we have a consistent symbol names in this temp dir.
	goMod := fmt.Sprintf(`module %s
go 1.21
`, pkg)
	if err := os.WriteFile(filepath.Join(dir, "go.mod"), []byte(goMod), 0644); err != nil {
		t.Fatalf("error writing go.mod: %v", err)
	}

	// Run the test without PGO to ensure that the test assertions are

        GOTOOLDIR="/usr/local/go/pkg/tool/darwin_arm64"
        GOVCS=""
        GOVERSION="go1.20.7"
        GCCGO="gccgo"
        AR="ar"
        CC="clang"
        CXX="clang++"
        CGO_ENABLED="1"
        GOMOD="/dev/null"
        GOWORK=""
        CGO_CFLAGS="-O2 -g"
        CGO_CPPFLAGS=""
        CGO_CXXFLAGS="-O2 -g"
        CGO_FFLAGS="-O2 -g"
        CGO_LDFLAGS="-O2 -g"
        PKG_CONFIG="pkg-config"

	Indirect   bool             `json:",omitempty"` // module is only indirectly needed by main module
	Dir        string           `json:",omitempty"` // directory holding local copy of files, if any
	GoMod      string           `json:",omitempty"` // path to go.mod file describing module, if any
	GoVersion  string           `json:",omitempty"` // go version used in module

	}
	var max string
	for _, v := range versions.List {
		if max == "" || gover.ModCompare(r.path, v, max) > 0 {
			max = v
		}
	}
	return r.Stat(ctx, max)
}

func (r *toolchainRepo) GoMod(ctx context.Context, version string) (data []byte, err error) {
	return []byte("module " + r.path + "\n"), nil
}

func (r *toolchainRepo) Zip(ctx context.Context, dst io.Writer, version string) error {

)

func main() {
	exe := os.Args[1]
	data, err := ioutil.ReadFile(exe)
	if err != nil {
		log.Fatal(err)
	}

	if os.Getenv("GO111MODULE") == "on" {
		out, err := exec.Command("go", "env", "GOMOD").Output()
		if err != nil {
			log.Fatal(err)
		}
		modRoot := filepath.Dir(strings.TrimSpace(string(out)))
		check(data, "module root", modRoot)
	} else {
		check(data, "GOPATH", os.Getenv("GOPATH"))
	}

					good := dir + "/execabs-test"
					if found, err := LookPath(good); err != nil || !strings.HasPrefix(found, good) {
						t.Fatalf(`LookPath(%#q) = %#q, %v, want "%s...", nil`, good, found, err, good)
					}
					if runtime.GOOS == "windows" {
						good = dir + `\execabs-test`
						if found, err := LookPath(good); err != nil || !strings.HasPrefix(found, good) {