chore(cli): Only show compilation progress bar after a delay

Only show the progress bar after a delay to avoid flickering and
annoying output for fast compilations.

Author: theduke

lib/cli/src/commands/run/runtime.rs

@@ -196,11 +196,22 @@ where
     let res = if quiet_mode {
         fut.await
     } else {
-        let should_clear = bar.is_finished() || bar.is_hidden();
-        show_compile_progress(bar, &hash, name.as_deref());
-        let res = fut.await;
-        if should_clear {
-            bar.finish_and_clear();
+        // Only show the progress bar after a delay to avoid flickering and
+        // annoying output for fast compilations.
+        let delay = tokio::time::sleep(Duration::from_secs(1));
+        tokio::select! {
+            _ = delay => {
+                let should_clear = bar.is_finished() || bar.is_hidden();
+                show_compile_progress(bar, &hash, name.as_deref());
+                let res = fut.await;
+                if should_clear {
+                    bar.finish_and_clear();
+                }
+                res
+            }
+            res = fut => {
+                res
+            }
         }
 
         res