Pre-populate authentication sources in Project and Tools APIs (#5367)

## Summary

Closes https://github.com/astral-sh/uv/issues/5366.

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

@@ -267,7 +267,6 @@ pub(crate) async fn pip_compile(
     }
 
     // Initialize the registry client.
-
     let client = RegistryClientBuilder::from(client_builder)
         .cache(cache.clone())
         .index_urls(index_locations.index_urls())

crates/uv/src/commands/project/add.rs

@@ -1,6 +1,7 @@
 use anyhow::{Context, Result};
 
 use pep508_rs::ExtraName;
+use uv_auth::store_credentials_from_url;
 use uv_cache::Cache;
 use uv_client::{BaseClientBuilder, Connectivity, FlatIndexClient, RegistryClientBuilder};
 use uv_configuration::{Concurrency, ExtrasSpecification, PreviewMode, SetupPyStrategy};
@@ -96,6 +97,11 @@ pub(crate) async fn add(
     let (tags, markers) =
         resolution_environment(python_version, python_platform, venv.interpreter())?;
 
+    // Add all authenticated sources to the cache.
+    for url in settings.index_locations.urls() {
+        store_credentials_from_url(url);
+    }
+
     // Initialize the registry client.
     let client = RegistryClientBuilder::from(client_builder)
         .index_urls(settings.index_locations.index_urls())

crates/uv/src/commands/project/lock.rs

@@ -10,6 +10,7 @@ use tracing::debug;
 
 use distribution_types::{Diagnostic, UnresolvedRequirementSpecification, VersionId};
 use pep440_rs::Version;
+use uv_auth::store_credentials_from_url;
 use uv_cache::Cache;
 use uv_client::{Connectivity, FlatIndexClient, RegistryClientBuilder};
 use uv_configuration::{Concurrency, ExtrasSpecification, PreviewMode, Reinstall, SetupPyStrategy};
@@ -236,6 +237,11 @@ pub(super) async fn do_lock(
 
     let python_requirement = PythonRequirement::from_requires_python(interpreter, &requires_python);
 
+    // Add all authenticated sources to the cache.
+    for url in index_locations.urls() {
+        store_credentials_from_url(url);
+    }
+
     // Initialize the registry client.
     let client = RegistryClientBuilder::new(cache.clone())
         .native_tls(native_tls)

crates/uv/src/commands/project/mod.rs

@@ -7,6 +7,7 @@ use tracing::debug;
 use distribution_types::{Resolution, UnresolvedRequirementSpecification};
 use pep440_rs::Version;
 use pypi_types::Requirement;
+use uv_auth::store_credentials_from_url;
 use uv_cache::Cache;
 use uv_client::{BaseClientBuilder, Connectivity, FlatIndexClient, RegistryClientBuilder};
 use uv_configuration::{
@@ -335,6 +336,11 @@ pub(crate) async fn resolve_names(
         build_options,
     } = settings;
 
+    // Add all authenticated sources to the cache.
+    for url in index_locations.urls() {
+        store_credentials_from_url(url);
+    }
+
     // Initialize the registry client.
     let client = RegistryClientBuilder::new(cache.clone())
         .native_tls(native_tls)
@@ -417,6 +423,11 @@ pub(crate) async fn resolve_environment<'a>(
     let markers = interpreter.markers();
     let python_requirement = PythonRequirement::from_interpreter(interpreter);
 
+    // Add all authenticated sources to the cache.
+    for url in index_locations.urls() {
+        store_credentials_from_url(url);
+    }
+
     // Initialize the registry client.
     let client = RegistryClientBuilder::new(cache.clone())
         .native_tls(native_tls)
@@ -539,6 +550,11 @@ pub(crate) async fn sync_environment(
     let tags = venv.interpreter().tags()?;
     let markers = venv.interpreter().markers();
 
+    // Add all authenticated sources to the cache.
+    for url in index_locations.urls() {
+        store_credentials_from_url(url);
+    }
+
     // Initialize the registry client.
     let client = RegistryClientBuilder::new(cache.clone())
         .native_tls(native_tls)
@@ -677,6 +693,11 @@ pub(crate) async fn update_environment(
     let markers = venv.interpreter().markers();
     let python_requirement = PythonRequirement::from_interpreter(interpreter);
 
+    // Add all authenticated sources to the cache.
+    for url in index_locations.urls() {
+        store_credentials_from_url(url);
+    }
+
     // Initialize the registry client.
     let client = RegistryClientBuilder::new(cache.clone())
         .native_tls(native_tls)

crates/uv/src/commands/project/sync.rs

@@ -1,5 +1,5 @@
 use anyhow::Result;
-
+use uv_auth::store_credentials_from_url;
 use uv_cache::Cache;
 use uv_client::{Connectivity, FlatIndexClient, RegistryClientBuilder};
 use uv_configuration::{
@@ -166,6 +166,11 @@ pub(super) async fn do_sync(
     // Read the lockfile.
     let resolution = lock.to_resolution(project, markers, tags, extras, &dev)?;
 
+    // Add all authenticated sources to the cache.
+    for url in index_locations.urls() {
+        store_credentials_from_url(url);
+    }
+
     // Initialize the registry client.
     let client = RegistryClientBuilder::new(cache.clone())
         .native_tls(native_tls)

crates/uv/src/commands/venv.rs

@@ -200,6 +200,11 @@ async fn venv_impl(
         // Extract the interpreter.
         let interpreter = venv.interpreter();
 
+        // Add all authenticated sources to the cache.
+        for url in index_locations.urls() {
+            store_credentials_from_url(url);
+        }
+
         // Instantiate a client.
         let client = RegistryClientBuilder::from(client_builder_clone)
             .cache(cache.clone())