Fix Throbber Linebreak

internal/app/app.go

@@ -31,10 +31,11 @@ type context struct {
 }
 
 type spinner struct {
-	mu   sync.Mutex
-	on   bool
-	text string
-	msg  []string
+	mu      sync.Mutex
+	on      bool
+	text    string
+	msg     []string
+	painted bool
 }
 
 var spin = &spinner{
@@ -53,6 +54,19 @@ func (s *spinner) stop() {
 	s.mu.Lock()
 	defer s.mu.Unlock()
 	s.on = false
+	if s.painted {
+		fmt.Fprint(os.Stderr, "\r\033[K\n")
+		s.painted = false
+	}
+}
+
+func (s *spinner) linebreak() {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	if s.on && s.painted {
+		fmt.Fprint(os.Stderr, "\r\033[K\n")
+		s.painted = false
+	}
 }
 
 func (s *spinner) run(text string) {
@@ -66,6 +80,7 @@ func (s *spinner) run(text string) {
 		}
 		msg := s.msg[i%len(s.msg)]
 		fmt.Fprintf(os.Stderr, "\r[%s] %s", msg, text)
+		s.painted = true
 		s.mu.Unlock()
 		i++
 		time.Sleep(100 * time.Millisecond)
@@ -224,6 +239,7 @@ func runBuildModule(ctx context) error {
 	}
 
 	result, err := pipeline.BuildModuleWithProgress(p, func(message string) {
+		spin.linebreak()
 		fmt.Fprintf(ctx.stdout, "[build-module] %s\n", message)
 	})
 	if err != nil {
@@ -259,6 +275,7 @@ func runBuildHAKs(ctx context) error {
 	}
 
 	progress := func(message string) {
+		spin.linebreak()
 		fmt.Fprintf(ctx.stdout, "[build-haks] %s\n", message)
 	}
 	var result pipeline.BuildResult