cmd/go: incompatible module path check doesn't apply for gopkg.in/yaml.v2 #58721
Description
What version of Go are you using (go version)?
$ go version go version go version go1.20.1 darwin/amd64
What did you do?
-- go.mod --
module w
go 1.20
require gopkg.in/yaml.v2 v2.4.0
replace gopkg.in/yaml.v2 => gopkg.in/yaml.v3 v3.0.0
-- main.go --
package main
import "gopkg.in/yaml.v2"
func main() {
var t struct{ A string }
_, _ = yaml.Marshal(&t)
}
And run go build
Note: the go.mod isn't tidy.
What did you expect to see?
Error related to mismatching module paths. (gopkg.in/yaml.v2 vs gopkg.in/yaml.v3)
What did you see instead?
No error.
go list sees the replacement.
$ go list -f '{{.Module}}' gopkg.in/yaml.v2
gopkg.in/yaml.v2 v2.4.0 => gopkg.in/yaml.v3 v3.0.0
go mod tidy adds gopkg.in/yaml.v3 to indirect require group.
go build was ok as long as go.sum has an entry for v2.
module w
go 1.20
require gopkg.in/yaml.v2 v2.4.0
require gopkg.in/yaml.v3 v3.0.1 // indirect
replace gopkg.in/yaml.v2 => gopkg.in/yaml.v3 v3.0.0
On the other hand,
--- go.mod ---
module e
go 1.20
require (
github.com/go-logr/logr v1.2.0 // indirect
k8s.io/klog v1.0.0
)
--- main.go ---
package main
import "k8s.io/klog/v2"
func main() {
_ = klog.Info
}
--- go.sum ---
github.com/go-logr/logr v1.2.0 h1:QK40JKJyMdUDz+h+xvCsru/bJhvG0UxvePV0ufL/AcE=
github.com/go-logr/logr v1.2.0/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
k8s.io/klog/v2 v2.90.0 h1:VkTxIV/FjRXn1fgNNcKGM8cfmL1Z33ZjXRTVxKCoF5M=
k8s.io/klog/v2 v2.90.0/go.mod h1:y1WjHnz7Dj687irZUWR/WLkLc5N1YHtjLdmgWjndZn0=
go build returns an error (however, not explicitly talks about this path issue)
go build
main.go:3:8: no required module provides package k8s.io/klog/v2; to add it:
go get k8s.io/klog/v2
go mod tidy update go.mod to the following without error.
module e
go 1.20
require k8s.io/klog/v2 v2.90.0
require github.com/go-logr/logr v1.2.0 // indirect
replace k8s.io/klog => k8s.io/klog/v2 v2.90.0
After that go build succeed. (I don't know why).
But go list -f '{{.Module}}' k8s.io/klog reports an error
$ go list -f '{{.Module}}' k8s.io/klog
module k8s.io/klog provides package k8s.io/klog and is replaced but not required; to add it:
go get k8s.io/klog
$ go get k8s.io/klog
go: k8s.io/klog/v2@v2.90.0 used for two different module paths (k8s.io/klog and k8s.io/klog/v2)