Mirror official uv self-update installer downloads

Author: zsol

Cargo.lock

@@ -860,7 +860,10 @@ pub struct SelfUpdateArgs {
     pub target_version: Option<String>,
 
     /// A GitHub token for authentication.
-    /// A token is not required but can be used to reduce the chance of encountering rate limits.
+    ///
+    /// This is only required for GitHub API-backed self-update flows, such as custom-host,
+    /// GitHub Enterprise, or fallback behavior. The default public self-update path uses the
+    /// Astral mirror and does not require a token.
     #[arg(long, env = EnvVars::UV_GITHUB_TOKEN, value_hint = ValueHint::Other)]
     pub token: Option<String>,
 

crates/uv-cli/src/lib.rs

@@ -79,6 +79,7 @@ ctrlc = { workspace = true }
 diskus = { workspace = true }
 dotenvy = { workspace = true }
 dunce = { workspace = true }
+etcetera = { workspace = true }
 fs-err = { workspace = true, features = ["tokio"] }
 futures = { workspace = true }
 http = { workspace = true }