Revert

Author: charliermarsh

crates/uv-client/src/registry_client.rs

@@ -704,10 +704,7 @@ impl RegistryClient {
     pub async fn fetch_simple_index(
         &self,
         index_url: &IndexUrl,
-        download_concurrency: &Semaphore,
     ) -> Result<SimpleIndexMetadata, Error> {
-        let _permit = download_concurrency.acquire().await;
-
         // Format the URL for PyPI.
         let mut url = index_url.url().clone();
         url.path_segments_mut()
@@ -1309,10 +1306,15 @@ pub struct VersionSourceDist {
 #[rkyv(derive(Debug))]
 pub struct SimpleIndexMetadata {
     /// The list of project names available in the index.
-    pub projects: Vec<PackageName>,
+    projects: Vec<PackageName>,
 }
 
 impl SimpleIndexMetadata {
+    /// Iterate over the projects in the index.
+    pub fn iter(&self) -> impl Iterator<Item = &PackageName> {
+        self.projects.iter()
+    }
+
     /// Create a [`SimpleIndexMetadata`] from a [`PypiSimpleIndex`].
     fn from_pypi_index(index: PypiSimpleIndex) -> Self {
         Self {

crates/uv-dev/src/list_packages.rs

@@ -1,7 +1,6 @@
 use anstream::println;
 use anyhow::Result;
 use clap::Parser;
-use tokio::sync::Semaphore;
 
 use uv_cache::{Cache, CacheArgs};
 use uv_client::{BaseClientBuilder, RegistryClientBuilder};
@@ -28,10 +27,9 @@ pub(crate) async fn list_packages(
     .build();
 
     let index_url = IndexUrl::parse(&args.url, None)?;
-    let concurrency = Semaphore::new(Semaphore::MAX_PERMITS);
-    let index = client.fetch_simple_index(&index_url, &concurrency).await?;
+    let index = client.fetch_simple_index(&index_url).await?;
 
-    for package_name in &index.projects {
+    for package_name in index.iter() {
         println!("{}", package_name);
     }
 

crates/uv-distribution/src/source/mod.rs

@@ -1536,8 +1536,6 @@ impl<'a, T: BuildContext> SourceDistributionBuilder<'a, T> {
             return Err(Error::HashesNotSupportedGit(source.to_string()));
         }
 
-        // STOPSHIP(charlie): Here, we can fetch the pre-built wheel.
-
         // Fetch the Git repository.
         let fetch = self
             .build_context