From cac6560b4ff5909e118053fe83186c691003be05 Mon Sep 17 00:00:00 2001
From: Zanie Blue <contact@zanie.dev>
Date: Thu, 17 Apr 2025 11:36:05 -0500
Subject: [PATCH] Treat empty `UV_TOOL_DIR` as unset (#12905)

Closes https://github.com/astral-sh/uv/issues/8608
---
 crates/uv-tool/src/lib.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/crates/uv-tool/src/lib.rs b/crates/uv-tool/src/lib.rs
index 70aeaf32a..fbaca618e 100644
--- a/crates/uv-tool/src/lib.rs
+++ b/crates/uv-tool/src/lib.rs
@@ -74,7 +74,7 @@ impl InstalledTools {
     /// 2. A directory in the system-appropriate user-level data directory, e.g., `~/.local/uv/tools`
     /// 3. A directory in the local data directory, e.g., `./.uv/tools`
     pub fn from_settings() -> Result<Self, Error> {
-        if let Some(tool_dir) = std::env::var_os(EnvVars::UV_TOOL_DIR) {
+        if let Some(tool_dir) = std::env::var_os(EnvVars::UV_TOOL_DIR).filter(|s| !s.is_empty()) {
             Ok(Self::from_path(std::path::absolute(tool_dir)?))
         } else {
             Ok(Self::from_path(