1# baz.go (importing just fmt) works with -mod=mod,  -mod=vendor.
2go build -x -mod=mod my-module/vendor/example.com/another-module/foo/bar/baz.go
3go build -x -mod=readonly my-module/vendor/example.com/another-module/foo/bar/baz.go
4go build -x -mod=vendor my-module/vendor/example.com/another-module/foo/bar/baz.go
5
6# baz_with_outside_dep.go (with a non-std dependency) works with -mod=mod
7# but not with -mod=readonly and -mod=vendor.
8go build -x -mod=mod my-module/vendor/example.com/another-module/foo/bar/baz_with_outside_dep.go
9! go build -x -mod=readonly my-module/vendor/example.com/another-module/foo/bar/baz_with_outside_dep.go
10stderr 'no required module provides package rsc.io/quote'
11! go build -x -mod=vendor my-module/vendor/example.com/another-module/foo/bar/baz_with_outside_dep.go
12stderr 'no required module provides package rsc.io/quote'
13
14-- my-module/go.mod --
15module example.com/my-module
16
17go 1.20
18-- my-module/vendor/example.com/another-module/foo/bar/baz.go --
19package main
20
21import "fmt"
22
23func main() {
24	fmt.Println("hello, world.")
25}
26-- my-module/vendor/example.com/another-module/foo/bar/baz_with_outside_dep.go --
27package main
28
29import (
30    "fmt"
31    "rsc.io/quote"
32)
33
34func main() {
35	fmt.Println(quote.Hello())
36}
37