Handling a pg error and getting the stacktrace in go

pgerr.go

import (
  "github.com/jackc/pgconn"
	"github.com/pkg/errors"
)

func main() {
  if err != nil {
		var pgerr *pgconn.PgError
		if errors.As(err, &pgerr) && pgerr.SQLState() == database.DUPLICATE {
			t.Log(err)
			type stackTracer interface {
				error
				StackTrace() errors.StackTrace
			}
			var tracerr stackTracer
			var iterr error = err
			for errors.As(iterr, &tracerr) {
				t.Error(tracerr.StackTrace())
				iterr = errors.Unwrap(tracerr)
			}
			t.Fatal(err)

		} else {
			t.Fatal(err)
		}
	}
}