destinationFile = file("w1.properties")
                properties = [v: 1]
            }
            def w2 = tasks.create("w2", WriteProperties) {
                destinationFile = file("w2.properties")
                properties = [v: 1]
            }

            tasks.create("w").dependsOn w1, w2
        """

        when:
        succeeds "w"
        def firstBuildId = buildInvocationId

		return z.set(x)
	}
	// m >= n > 0

	const W2 = W / 2         // half-digit size in bits
	const M2 = (1 << W2) - 1 // lower half-digit mask

	z = z.make(m + 1)
	var c big.Word
	for i := 0; i < n; i++ {
		// lower half-digit
		c += x[i]&M2 + y[i]&M2
		d := c & M2
		c >>= W2
		// upper half-digit
		c += x[i]>>W2 + y[i]>>W2
		z[i] = c<<W2 | d
		c >>= W2
	}
	for i := n; i < m; i++ {
		// lower half-digit

cd $GOPATH/other
env GO111MODULE=auto
exec $WORK/testimport$GOEXE other/x/y/z/w .
stdout w2.go

! exec $WORK/testimport$GOEXE gobuild.example.com/x/y/z/w .
stderr 'no required module provides package gobuild.example.com/x/y/z/w; to add it:\n\tgo get gobuild.example.com/x/y/z/w'

cd z
exec $WORK/testimport$GOEXE other/x/y/z/w .
stdout w2.go

# GO111MODULE=on outside GOPATH/src
env GO111MODULE=

package main

func main() {
	v1 := [2]int32{-1, 88}
	v2 := [2]int32{-1, 99}
	if v1 == v2 {
		panic("bad comparison")
	}

	w1 := [2]int16{-1, 88}
	w2 := [2]int16{-1, 99}
	if w1 == w2 {
		panic("bad comparison")
	}
	x1 := [4]int16{-1, 88, 88, 88}
	x2 := [4]int16{-1, 99, 99, 99}
	if x1 == x2 {
		panic("bad comparison")
	}

	a1 := [2]int8{-1, 88}
	a2 := [2]int8{-1, 99}

func (v *Value) AddArg4(w1, w2, w3, w4 *Value) {
	v.Args = append(v.Args, w1, w2, w3, w4)
	w1.Uses++
	w2.Uses++
	w3.Uses++
	w4.Uses++
}

//go:noinline
func (v *Value) AddArg5(w1, w2, w3, w4, w5 *Value) {
	v.Args = append(v.Args, w1, w2, w3, w4, w5)
	w1.Uses++
	w2.Uses++
	w3.Uses++
	w4.Uses++
	w5.Uses++
}

//go:noinline
func (v *Value) AddArg6(w1, w2, w3, w4, w5, w6 *Value) {

func Mul64(x, y uint64) (hi, lo uint64) {
	const mask32 = 1<<32 - 1
	x0 := x & mask32
	x1 := x >> 32
	y0 := y & mask32
	y1 := y >> 32
	w0 := x0 * y0
	t := x1*y0 + w0>>32
	w1 := t & mask32
	w2 := t >> 32
	w1 += x0 * y1
	hi = x1*y1 + w2 + w1>>32
	lo = x * y
	return
}

// Add64 returns the sum with carry of x, y and carry: sum = x + y + carry.
// The carry input must be 0 or 1; otherwise the behavior is undefined.

//
//go:noinline
func (v V) autos_ssa(which, w1, x1, w2, x2 int64) (y, z V) {
	fill_ssa(v.w, v.x, &v, v.p) // gratuitous no-op to force addressing
	var a, b, c, d, e, f, g, h V
	fill_ssa(w1, x1, &a, &b)
	fill_ssa(w1, x2, &b, &c)
	fill_ssa(w1, v.x, &c, &d)
	fill_ssa(w2, x1, &d, &e)
	fill_ssa(w2, x2, &e, &f)
	fill_ssa(w2, v.x, &f, &g)
	fill_ssa(v.w, x1, &g, &h)
	fill_ssa(v.w, x2, &h, &a)

	if err != nil {
		t.Fatalf("Unable start event watcher: '%v' (will not retry!)", err)
	}
	w2, err := m.Watch()
	if err != nil {
		t.Fatalf("Unable start event watcher: '%v' (will not retry!)", err)
	}
	w.Stop()
	m.Shutdown()
	if _, open := <-w.ResultChan(); open {
		t.Errorf("Stop didn't work?")
	}
	if _, open := <-w2.ResultChan(); open {
		t.Errorf("Shutdown didn't work?")
	}
	// Extra stops don't hurt things

	example.net/x v0.1.0 => ./x1
	example.net/x v0.2.0-pre => ./x2-pre
	example.net/y v0.1.0 => ./y1
	example.net/y v0.2.0-pre => ./y2-pre
	example.net/z v0.1.0 => ./z1
	example.net/z v0.2.0-pre => ./z2-pre
)
-- w1/go.mod --
module example.net/w

go 1.16

require (
	example.net/y v0.2.0-pre
	example.net/z v0.2.0-pre
)
-- w1/w.go --
package w
-- w2-pre/go.mod --

type block [blockSize]int32

const (
	w1 = 2841 // 2048*sqrt(2)*cos(1*pi/16)
	w2 = 2676 // 2048*sqrt(2)*cos(2*pi/16)
	w3 = 2408 // 2048*sqrt(2)*cos(3*pi/16)
	w5 = 1609 // 2048*sqrt(2)*cos(5*pi/16)
	w6 = 1108 // 2048*sqrt(2)*cos(6*pi/16)
	w7 = 565  // 2048*sqrt(2)*cos(7*pi/16)

	w1pw7 = w1 + w7
	w1mw7 = w1 - w7
	w2pw6 = w2 + w6
	w2mw6 = w2 - w6
	w3pw5 = w3 + w5
	w3mw5 = w3 - w5

	r2 = 181 // 256/sqrt(2)
)