environment load assert chain (#369); get rid of warnings in zrok status

cmd/zrok/status.go

@@ -50,7 +50,6 @@ func (cmd *statusCommand) run(_ *cobra.Command, _ []string) {
 	_, _ = fmt.Fprintf(os.Stderr, "\n")
 
 	if !env.IsEnabled() {
-		tui.Warning("Unable to load your local environment!\n")
 		_, _ = fmt.Fprintf(os.Stderr, "To create a local environment use the %v command.\n", tui.Code.Render("zrok enable"))
 	} else {
 		_, _ = fmt.Fprintf(os.Stdout, tui.Code.Render("Environment")+":\n\n")

environment/api.go

@@ -33,7 +33,11 @@ type Root interface {
 }
 
 func LoadRoot() (Root, error) {
+	if assert, err := env_v0_3.Assert(); assert && err == nil {
 		return env_v0_3.Load()
+	} else {
+		return nil, err
+	}
 }
 
 func ListRoots() ([]*env_core.Metadata, error) {

environment/env_v0_3/root.go

@@ -16,6 +16,21 @@ type Root struct {
 	env  *env_core.Environment
 }
 
+func Assert() (bool, error) {
+	exists, err := rootExists()
+	if err != nil {
+		return true, err
+	}
+	if exists {
+		meta, err := loadMetadata()
+		if err != nil {
+			return true, err
+		}
+		return meta.V == V, nil
+	}
+	return false, nil
+}
+
 func Load() (*Root, error) {
 	r := &Root{}
 	exists, err := rootExists()
@@ -62,7 +77,7 @@ func rootExists() (bool, error) {
 	if err != nil {
 		return false, err
 	}
-	return true, err
+	return true, nil
 }
 
 func assertMetadata() error {