Keep original preference, for identical priority

Unhealthy drivers have their priority lowered

cmd/minikube/cmd/start.go

@@ -590,7 +590,12 @@ func selectDriver(existing *config.ClusterConfig) (registry.DriverState, []regis
 	pick, alts, rejects := driver.Suggest(choices)
 	if pick.Name == "" {
 		out.Step(style.ThumbsDown, "Unable to pick a default driver. Here is what was considered, in preference order:")
-		sort.Slice(rejects, func(i, j int) bool { return rejects[i].Priority > rejects[j].Priority })
+		sort.Slice(rejects, func(i, j int) bool {
+			if rejects[i].Priority == rejects[j].Priority {
+				return rejects[i].Preference > rejects[j].Preference
+			}
+			return rejects[i].Priority > rejects[j].Priority
+		})
 		for _, r := range rejects {
 			if !r.Default {
 				continue

pkg/minikube/registry/global.go

@@ -66,10 +66,11 @@ var (
 
 // DriverState is metadata relating to a driver and status
 type DriverState struct {
-	Name     string
-	Default  bool
-	Priority Priority
-	State    State
+	Name       string
+	Default    bool
+	Preference Priority
+	Priority   Priority
+	State      State
 	// Rejection is why we chose not to use this driver
 	Rejection string
 	// Suggestion is how the user could improve health
@@ -112,6 +113,7 @@ func Available(vm bool) []DriverState {
 		s := d.Status()
 		klog.Infof("%s default: %v priority: %d, state: %+v", d.Name, d.Default, d.Priority, s)
 
+		preference := d.Priority
 		priority := d.Priority
 		if !s.Healthy {
 			priority = Unhealthy
@@ -119,10 +121,10 @@ func Available(vm bool) []DriverState {
 
 		if vm {
 			if IsVM(d.Name) {
-				sts = append(sts, DriverState{Name: d.Name, Default: d.Default, Priority: priority, State: s})
+				sts = append(sts, DriverState{Name: d.Name, Default: d.Default, Preference: preference, Priority: priority, State: s})
 			}
 		} else {
-			sts = append(sts, DriverState{Name: d.Name, Default: d.Default, Priority: priority, State: s})
+			sts = append(sts, DriverState{Name: d.Name, Default: d.Default, Preference: preference, Priority: priority, State: s})
 		}
 	}
 

pkg/minikube/registry/global_test.go

@@ -93,16 +93,18 @@ func TestGlobalAvailable(t *testing.T) {
 
 	expected := []DriverState{
 		{
-			Name:     "healthy-bar",
-			Default:  true,
-			Priority: Default,
-			State:    State{Healthy: true},
+			Name:       "healthy-bar",
+			Default:    true,
+			Preference: Default,
+			Priority:   Default,
+			State:      State{Healthy: true},
 		},
 		{
-			Name:     "unhealthy-foo",
-			Default:  true,
-			Priority: Unhealthy,
-			State:    State{Healthy: false},
+			Name:       "unhealthy-foo",
+			Default:    true,
+			Preference: Default,
+			Priority:   Unhealthy,
+			State:      State{Healthy: false},
 		},
 	}