Review

crates/uv-client/src/error.rs

@@ -3,6 +3,8 @@ use std::ops::Deref;
 
 use async_http_range_reader::AsyncHttpRangeReaderError;
 use async_zip::error::ZipError;
+use http::StatusCode;
+use rustc_hash::FxHashSet;
 use serde::Deserialize;
 
 use uv_distribution_filename::{WheelFilename, WheelFilenameError};
@@ -278,7 +280,7 @@ pub enum ErrorKind {
     /// Make sure the package name is spelled correctly and that you've
     /// configured the right registry to fetch it from.
     #[error("Package `{0}` was not found in the registry")]
-    StatusCodeError(PackageName),
+    StatusCodeError(PackageName, FxHashSet<StatusCode>),
 
     /// The package was not found in the local (file-based) index.
     #[error("Package `{0}` was not found in the local index")]

crates/uv-client/src/registry_client.rs

@@ -3,7 +3,6 @@ use std::fmt::Debug;
 use std::path::PathBuf;
 use std::str::FromStr;
 use std::sync::Arc;
-use std::sync::atomic::{AtomicBool, Ordering};
 use std::time::Duration;
 
 use async_http_range_reader::AsyncHttpRangeReader;
@@ -11,7 +10,7 @@ use futures::{FutureExt, StreamExt, TryStreamExt};
 use http::{HeaderMap, StatusCode};
 use itertools::Either;
 use reqwest::{Proxy, Response};
-use rustc_hash::FxHashMap;
+use rustc_hash::{FxHashMap, FxHashSet};
 use tokio::sync::{Mutex, Semaphore};
 use tracing::{Instrument, debug, info_span, instrument, trace, warn};
 use url::Url;
@@ -325,7 +324,7 @@ impl RegistryClient {
         };
 
         let mut results = Vec::new();
-        let any_status_code_error = AtomicBool::new(false);
+        let status_code_errors = Arc::new(Mutex::new(FxHashSet::default()));
 
         match self.index_strategy_for(package_name) {
             // If we're searching for the first index that contains the package, fetch serially.
@@ -357,7 +356,7 @@ impl RegistryClient {
                                     debug!(
                                         "Indexes search failed because of status code failure: {status_code}"
                                     );
-                                    any_status_code_error.store(true, Ordering::Relaxed);
+                                    status_code_errors.lock().await.insert(status_code);
                                     break;
                                 }
                             }
@@ -394,8 +393,8 @@ impl RegistryClient {
                                 {
                                     SimpleMetadataSearchOutcome::Found(metadata) => Some(metadata),
                                     SimpleMetadataSearchOutcome::NotFound => None,
-                                    SimpleMetadataSearchOutcome::StatusCodeFailure(_) => {
+                                    SimpleMetadataSearchOutcome::StatusCodeFailure(status_code) => {
-                                        any_status_code_error.store(true, Ordering::Relaxed);
+                                        status_code_errors.lock().await.insert(status_code);
                                         None
                                     }
                                 };
@@ -422,8 +421,13 @@ impl RegistryClient {
         if results.is_empty() {
             return match self.connectivity {
                 Connectivity::Online => {
-                    if any_status_code_error.load(Ordering::Relaxed) {
+                    let status_code_errors = status_code_errors.lock().await;
-                        Err(ErrorKind::StatusCodeError(package_name.clone()).into())
+                    if !status_code_errors.is_empty() {
+                        Err(ErrorKind::StatusCodeError(
+                            package_name.clone(),
+                            status_code_errors.clone(),
+                        )
+                        .into())
                     } else {
                         Err(ErrorKind::PackageNotFound(package_name.clone()).into())
                     }

crates/uv-publish/src/lib.rs

@@ -563,16 +563,18 @@ pub async fn check_url(
                     );
                     Ok(false)
                 }
-                uv_client::ErrorKind::StatusCodeError(_) => {
+                uv_client::ErrorKind::StatusCodeError(_, status_code_error) => {
+                    // TODO(konsti): We currently can't track that this must be exactly one status
+                    // error with check URL.
+                    debug_assert!(
+                        status_code_error.len() == 1,
+                        "Check URL must only check a single URL"
+                    );
+                    let status_code = status_code_error.iter().next();
                     // The package may or may not exist, there was an authentication failure.
-                    // TODO(konsti): We should show the real index error instead.
+                    let status_code_detail = status_code
-                    let status_code_detail = if index_capabilities.unauthorized(index_url) {
+                        .map(ToString::to_string)
-                        "401 Unauthorized"
+                        .unwrap_or("Status code error".to_string());
-                    } else if index_capabilities.forbidden(index_url) {
-                        "403 Forbidden"
-                    } else {
-                        "Status code error"
-                    };
                     warn!(
                         "Package not found in the registry; skipping upload check for {filename}"
                     );

crates/uv-resolver/src/resolver/provider.rs

@@ -201,7 +201,7 @@ impl<Context: BuildContext> ResolverProvider for DefaultResolverProvider<'_, Con
             )),
             Err(err) => match err.kind() {
                 uv_client::ErrorKind::PackageNotFound(_)
-                | uv_client::ErrorKind::StatusCodeError(_) => {
+                | uv_client::ErrorKind::StatusCodeError(..) => {
                     if let Some(flat_index) = flat_index
                         .and_then(|flat_index| flat_index.get(package_name))
                         .cloned()

crates/uv/src/commands/pip/latest.rs

@@ -47,7 +47,7 @@ impl LatestClient<'_> {
             Err(err) => {
                 return match err.kind() {
                     uv_client::ErrorKind::PackageNotFound(_)
-                    | uv_client::ErrorKind::StatusCodeError(_)
+                    | uv_client::ErrorKind::StatusCodeError(..)
                     | uv_client::ErrorKind::NoIndex(_)
                     | uv_client::ErrorKind::Offline(_) => Ok(None),
                     _ => Err(err),