arch-proxy.py: support zstd compressed packages

"The imminent release of pacman 5.2 brings build tools with support for
compressing packages with zstd. [..] If you use custom scripts make sure
these do not rely on hardcoded file extensions. The zstd package file
extension will be .pkg.tar.zst."

https://www.archlinux.org/news/required-update-to-recent-libarchive/

1 files changed, 4 insertions, 2 deletions

diff --git a/arch-proxy.py b/arch-proxy.py
index a8f5fd0..1ce6fa8 100755
--- a/arch-proxy.py
+++ b/arch-proxy.py
@@ -1,7 +1,7 @@
 #!/usr/bin/env python3
 # Arch Linux packages proxy
 #
-# Proxies requests, caching files with ".pkg.tar.xz" suffix.
+# Proxies requests, caching files with ".pkg.tar.*" suffix.
 # If the cached file exists, serve that file.
 # Otherwise, try to download file (as normally) and optionally cache it with
 # ".download" extension. If the file exists and the file is not being
@@ -241,7 +241,9 @@ class RequestHandler(http.server.BaseHTTPRequestHandler):
 
     def is_cacheable(self):
         """Whether the requested file should be cached."""
-        return self.path.endswith(".pkg.tar.xz")
+        # Support .pkg.tar.xz, .pkg.tar.zst, etc.
+        basename = os.path.splitext(self.path)[0]
+        return basename.endswith(".pkg.tar")
 
     def is_date_sensitive_request(self):
         """Whether the resource is ephemeral."""