From fe97589390e393961f880d84a9ed394db8194ed6 Mon Sep 17 00:00:00 2001
From: Paul McCarthy <pauldmccarthy@gmail.com>
Date: Tue, 12 Apr 2022 14:15:42 +0100
Subject: [PATCH] fix: Don't error if no new wheels were built (this may happen
 if --allow-empty is active)

---
 cibuildwheel/util.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/cibuildwheel/util.py b/cibuildwheel/util.py
index ef85a72c..0f262729 100644
--- a/cibuildwheel/util.py
+++ b/cibuildwheel/util.py
@@ -435,6 +435,11 @@ def print_new_wheels(msg: str, output_dir: Path) -> Iterator[None]:
         FileReport(wheel.name, f"{(wheel.stat().st_size + 1023) // 1024:,d}")
         for wheel in final_contents - existing_contents
     ]
+
+    if len(new_contents) == 0:
+        print('No new wheels')
+        return
+
     max_name_len = max(len(f.name) for f in new_contents)
     max_size_len = max(len(f.size) for f in new_contents)
     n = len(new_contents)