-- .info --
{"Version":"v1.0.0"}
-- .mod --
// Deprecated: in v1.0.0
module example.com/undeprecated

go 1.17
-- go.mod --
// Deprecated: in v1.0.0
module example.com/undeprecated

go 1.17
-- undeprecated.go --
package undeprecated

-- cmd/a/a.go --
package main

import "fmt"

func main() { fmt.Println("a@v1.0.0") }