+ - Net::Server[5] libnet-server-perl
+ - Filesys::Notify::Simple[6] libfilesys-notify-simple-perl
+ - Inline::C[7] libinline-c-perl
+ - Plack::Middleware::ReverseProxy[8] libplack-middleware-reverseproxy-perl
+ - Plack::Middleware::Deflater[8] libplack-middleware-deflater-perl
+
+[1] - Optional, needed for serving/generating Atom and HTML pages
+[2] - Optional, only required for NNTP server
+[3] - Optional, needed for gzipped mbox support over HTTP
+[4] - Optional, needed for bundled HTTP and NNTP servers
+[5] - Optional, needed for standalone daemonization of HTTP+NNTP servers
+[6] - Optional, needed for public-inbox-watch Maildir watcher
+[7] - Optional, allows speeds up spawning on Linux (see public-inbox-daemon(8))
+[8] - Optional, recommended for PSGI interface
+
+When installing Search::Xapian, make sure the underlying Xapian
+installation is not affected by an index corruption bug: