From 6cd9023dffe7f27fcbca6515ff2a979c2c1eb760 Mon Sep 17 00:00:00 2001
From: John Mumm <jtfmumm@gmail.com>
Date: Mon, 30 Jun 2025 13:15:50 +0200
Subject: [PATCH] Add trailing slash if missing to find-links URL

---
 crates/uv-client/src/flat_index.rs | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/crates/uv-client/src/flat_index.rs b/crates/uv-client/src/flat_index.rs
index 91668c5c4..1d4e24ca0 100644
--- a/crates/uv-client/src/flat_index.rs
+++ b/crates/uv-client/src/flat_index.rs
@@ -162,6 +162,14 @@ impl<'a> FlatIndexClient<'a> {
         url: &DisplaySafeUrl,
         flat_index: &IndexUrl,
     ) -> Result<FlatIndexEntries, Error> {
+        let mut url = url.clone();
+        url.path_segments_mut()
+            .map_err(|()| ErrorKind::CannotBeABase(flat_index.url().clone()))?
+            .pop_if_empty()
+            // Add a trailing slash to avoid redirect, which is not supported
+            // by some private registries.
+            .push("");
+
         let cache_entry = self.cache.entry(
             CacheBucket::FlatIndex,
             "html",
@@ -179,7 +187,7 @@ impl<'a> FlatIndexClient<'a> {
         let flat_index_request = self
             .client
             .uncached()
-            .for_host(url)
+            .for_host(&url)
             .get(Url::from(url.clone()))
             .header("Accept-Encoding", "gzip")
             .header("Accept", "text/html")