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"))
	}
	check(data, "GOROOT", os.Getenv("GOROOT"))
}

func Builder() string {
	return os.Getenv("GO_BUILDER_NAME")
}

// HasGoBuild reports whether the current system can build programs with “go build”
// and then run them with os.StartProcess or exec.Command.
func HasGoBuild() bool {
	if os.Getenv("GO_GCFLAGS") != "" {
		// It's too much work to require every caller of the go command
		// to pass along "-gcflags="+os.Getenv("GO_GCFLAGS").

		os.WriteFile(filepath.Join(dir, "README"), []byte(cacheREADME), 0666)
	}

	diskCache, err := Open(dir)
	if err != nil {
		base.Fatalf("failed to initialize build cache at %s: %s\n", dir, err)
	}

	if v := cfg.Getenv("GOCACHEPROG"); v != "" && goexperiment.CacheProg {
		defaultCache = startCacheProg(v, diskCache)
	} else {
		defaultCache = diskCache
	}
}

var (
	defaultDirOnce    sync.Once
	defaultDir        string

	"os"
	"os/exec"
	"path/filepath"
	"runtime"
	"strings"
	"testing"
)

func TestFortran(t *testing.T) {
	testenv.MustHaveGoRun(t)
	testenv.MustHaveCGO(t)

	// Find the FORTRAN compiler.
	fc := os.Getenv("FC")
	if fc == "" {
		fc, _ = exec.LookPath("gfortran")
	}
	if fc == "" {
		t.Skip("fortran compiler not found (try setting $FC)")
	}

	var fcExtra []string
	if strings.Contains(fc, "gfortran") {

cp stdout go.mod

go list -modfile=go.mod all
-- print_go_mod.go --
//go:build ignore
package main

import (
    "fmt"
    "os"
)

func main() {
    work := os.Getenv("WORK")
fmt.Printf(`module example.com/mod

require b.com v0.0.0

replace b.com => %s\gopath\src/modb
`,  work)
}
-- a.go --
package a

import _ "b.com/b"
-- modb/go.mod --
module b.com

package main

import (
	"bufio"
	"bytes"
	"log"
	"os"
	"os/exec"
	"path/filepath"
	"strings"
)

func main() {
	if os.Getenv("GO_BREAK_CLANG") != "" {
		os.Stderr.WriteString("GO_BREAK_CLANG is set\n")
		os.Exit(1)
	}

	b, err := os.ReadFile(filepath.Join(os.Getenv("WORK"), ".realclang"))
	if err != nil {
		log.Fatal(err)
	}
	clang := string(bytes.TrimSpace(b))
	cmd := exec.Command(clang, os.Args[1:]...)

	if err != nil {
		fmt.Fprintf(os.Stderr, "error: coverage meta-data prep failed: %v\n", err)
		if os.Getenv("GOCOVERDEBUG") != "" {
			panic("meta-data write failure")
		}
	}
	if len(ml) == 0 {
		fmt.Fprintf(os.Stderr, "program not built with -cover\n")
		return
	}

	goCoverDir = os.Getenv("GOCOVERDIR")
	if goCoverDir == "" {
		fmt.Fprintf(os.Stderr, "warning: GOCOVERDIR not set, no coverage data emitted\n")

    "$_builder.getI32IntegerAttr($0.cast<IntegerAttr>().getInt())">;

// Builds a constant bool attribute.
class GetBoolAttr<int value> :
    NativeCodeCall<"$_builder.getBoolAttr(" # value #")">;

// Converts an integer attribute $0 to 64-bit with builder.
def convertIntAttrTo64Bit : NativeCodeCall<
    "$_builder.getI64IntegerAttr($0.cast<IntegerAttr>().getInt())">;

// Extracts the single integer element from $_self.

// Subsequent calls to os.Setenv will change this cache, without writing back
// to the (possibly shared) Plan 9 environment, so that Setenv and Getenv
// conform to the same Posix semantics as on other operating systems.
// For Plan 9 shared environment semantics, instead of Getenv(key) and
// Setenv(key, value), one can use os.ReadFile("/env/" + key) and
// os.WriteFile("/env/" + key, value, 0666) respectively.
//
//go:nosplit

        maxParallelForks = 1 // those tests are pretty expensive, we shouldn't execute them concurrently
        inputs.property("androidHomeIsSet", System.getenv("ANDROID_HOME") != null)
        inputs.property("androidSdkRootIsSet", System.getenv("ANDROID_SDK_ROOT") != null)

        if (remoteProjectOutputFiles != null) {
            inputs.files(remoteProjectOutputFiles)