From 04619e4c28d5c6b919d841b57d8341ddcbbbfceb Mon Sep 17 00:00:00 2001
From: Daniel Friesel <daniel.friesel@uos.de>
Date: Tue, 18 Jan 2022 16:09:32 +0100
Subject: loader: gracefully handle uncreatable cache directory

---
 lib/loader/__init__.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lib/loader/__init__.py b/lib/loader/__init__.py
index 8f730bb..8b671ef 100644
--- a/lib/loader/__init__.py
+++ b/lib/loader/__init__.py
@@ -415,6 +415,12 @@ class RawData:
             os.mkdir(self.cache_dir)
         except FileExistsError:
             pass
+        except PermissionError:
+            logger.info(
+                f"Cannot write cache entry {self.cache_file}: permission denied"
+            )
+            # no cache for you
+            return
         with open(self.cache_file, "w") as f:
             cache_data = {
                 "filenames": self.filenames,
-- 
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