pull: refactor to remove series argument

src/pull.rs

@@ -339,11 +339,11 @@ async fn fetch_archive_sources(
 /// The source will be extracted under 'package/package'.
 pub async fn pull(
     package_info: &PackageInfo,
-    series: Option<&str>,
     cwd: Option<&Path>,
     progress: ProgressCallback<'_>,
 ) -> Result<(), Box<dyn Error>> {
     let package = &package_info.stanza.package;
+    let series = &package_info.series;
     let package_dir = if let Some(path) = cwd {
         path.join(package)
     } else {
@@ -355,11 +355,14 @@ pub async fn pull(
         // We have found a preferred VCS (git repository) for the package, so
         // we fetch the package from that repo.
 
-        // Depending on target series, we pick target branch; if no series is specified,
+        // Depending on target series, we pick target branch; if latest series is specified,
         // we target the development branch, i.e. the default branch
-        let branch_name = if let Some(s) = series {
+        let branch_name = if crate::package_info::get_ordered_series(package_info.dist.as_str())
+            .await?[0]
+            != *series
+        {
             if package_info.dist == "ubuntu" {
-                Some(format!("{}/{}", package_info.dist, s))
+                Some(format!("{}/{}", package_info.dist, series))
             } else {
                 // Debian does not have reliable branch naming...
                 // For now, we skip that part and clone default
@@ -438,7 +441,7 @@ mod tests {
         let info = crate::package_info::lookup(package, None, series, "", dist, None)
             .await
             .unwrap();
-        pull(&info, series, Some(cwd), None).await.unwrap();
+        pull(&info, Some(cwd), None).await.unwrap();
 
         let package_dir = cwd.join(package);
         assert!(package_dir.exists());