From 9321a34dbe4c243b2438e59a43977944ae9d2d97 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B6rn=20Quentin?= <bjoernQ@users.noreply.github.com>
Date: Thu, 26 Sep 2024 10:15:41 +0200
Subject: [PATCH] Reduce (unnecessary) rebuilds (#2232)

* Reduce (unnecessary) rebuilds

* Avoid redundant clone

* Prefer `.display()` over `.to_str().unwrap()`
---
 esp-config/src/generate.rs | 20 ++++++++++++--------
 1 file changed, 12 insertions(+), 8 deletions(-)

diff --git a/esp-config/src/generate.rs b/esp-config/src/generate.rs
index 1df1a642b..1afa1c925 100644
--- a/esp-config/src/generate.rs
+++ b/esp-config/src/generate.rs
@@ -126,14 +126,18 @@ fn env_change_work_around() {
 
     let dotcargo = out_dir.join(".cargo/");
     if dotcargo.exists() {
-        println!(
-            "cargo:rerun-if-changed={}",
-            dotcargo.clone().join("config.toml").to_str().unwrap()
-        );
-        println!(
-            "cargo:rerun-if-changed={}",
-            dotcargo.clone().join("config").to_str().unwrap()
-        );
+        if dotcargo.join("config.toml").exists() {
+            println!(
+                "cargo:rerun-if-changed={}",
+                dotcargo.join("config.toml").display()
+            );
+        }
+        if dotcargo.join("config").exists() {
+            println!(
+                "cargo:rerun-if-changed={}",
+                dotcargo.join("config").display()
+            );
+        }
     }
 }