feat(python): add --all-variants flag to python list

crates/uv-cli/src/lib.rs

@@ -6272,6 +6272,12 @@ pub struct PythonListArgs {
     #[arg(long, alias = "all_architectures")]
     pub all_arches: bool,
 
+    /// List all Python variant builds, including debug builds.
+    ///
+    /// By default, debug builds are hidden from the output.
+    #[arg(long)]
+    pub all_variants: bool,
+
     /// Only show installed Python versions.
     ///
     /// By default, installed distributions and available downloads for the current platform are shown.

crates/uv/src/commands/python/list.rs

@@ -61,6 +61,7 @@ pub(crate) async fn list(
     all_versions: bool,
     all_platforms: bool,
     all_arches: bool,
+    all_variants: bool,
     show_urls: bool,
     output_format: PythonListFormat,
     python_downloads_json_url: Option<String>,
@@ -86,6 +87,9 @@ pub(crate) async fn list(
         ManagedPythonDownloadList::new(&client, python_downloads_json_url.as_deref()).await?;
     let mut output = BTreeSet::new();
     if let Some(base_download_request) = base_download_request {
+        // Check before the move since `base_download_request` is consumed below
+        let show_debug = all_variants || base_download_request.allows_debug();
+
         let download_request = match kinds {
             PythonListKinds::Installed => None,
             PythonListKinds::Downloads => Some(if all_platforms {
@@ -118,8 +122,7 @@ pub(crate) async fn list(
             .map(|request| download_list.iter_matching(request))
             .into_iter()
             .flatten()
-            // TODO(zanieb): Add a way to show debug downloads, we just hide them for now
-            .filter(|download| !download.key().variant().is_debug());
+            .filter(|download| show_debug || !download.key().variant().is_debug());
 
         for download in downloads {
             output.insert((

crates/uv/src/lib.rs

@@ -1707,6 +1707,7 @@ async fn run(cli: Cli) -> Result<ExitStatus> {
                 args.all_versions,
                 args.all_platforms,
                 args.all_arches,
+                args.all_variants,
                 args.show_urls,
                 args.output_format,
                 args.python_downloads_json_url,

crates/uv/src/settings.rs

@@ -1191,6 +1191,7 @@ pub(crate) struct PythonListSettings {
     pub(crate) all_platforms: bool,
     pub(crate) all_arches: bool,
     pub(crate) all_versions: bool,
+    pub(crate) all_variants: bool,
     pub(crate) show_urls: bool,
     pub(crate) output_format: PythonListFormat,
     pub(crate) python_downloads_json_url: Option<String>,
@@ -1211,6 +1212,7 @@ impl PythonListSettings {
             all_versions,
             all_platforms,
             all_arches,
+            all_variants,
             only_installed,
             only_downloads,
             show_urls,
@@ -1265,6 +1267,7 @@ impl PythonListSettings {
             all_platforms,
             all_arches,
             all_versions,
+            all_variants,
             show_urls,
             output_format,
             python_downloads_json_url,