chore: checkpoint before Python removal

vendor/indicatif/examples/download.rs

@@ -0,0 +1,25 @@
+use std::thread;
+use std::time::Duration;
+use std::{cmp::min, fmt::Write};
+
+use indicatif::{ProgressBar, ProgressState, ProgressStyle};
+
+fn main() {
+    let mut downloaded = 0;
+    let total_size = 231231231;
+
+    let pb = ProgressBar::new(total_size);
+    pb.set_style(ProgressStyle::with_template("{spinner:.green} [{elapsed_precise}] [{wide_bar:.cyan/blue}] {bytes}/{total_bytes} ({eta})")
+        .unwrap()
+        .with_key("eta", |state: &ProgressState, w: &mut dyn Write| write!(w, "{:.1}s", state.eta().as_secs_f64()).unwrap())
+        .progress_chars("#>-"));
+
+    while downloaded < total_size {
+        let new = min(downloaded + 223211, total_size);
+        downloaded = new;
+        pb.set_position(new);
+        thread::sleep(Duration::from_millis(12));
+    }
+
+    pb.finish_with_message("downloaded");
+}