git: more elegant handling of installed pre/post-receive hook failing on direct repo access The hook would fail with a long backtrace when get_hook_environment raise an error exception. Instead, as first thing in the entry point from the hook, catch that situation and report it nicely before "quietly" skipping the hook: [mk@here myrepo]$ git push Enumerating objects: 3, done. Counting objects: 100% (3/3), done. Writing objects: 100% (3/3), 204 bytes | 204.00 KiB/s, done. Total 3 (delta 0), reused 0 (delta 0) remote: Skipping Kallithea Git post-recieve hook 'hooks/post-receive'. remote: Git was apparently not invoked by Kallithea: Environment variable KALLITHEA_EXTRAS not found To /tmp/somerepo * [new branch] master -> master [mk@here myrepo]$ We could be paranoid and let it (and the pre hook) fail ... but that doesn't seem helpful. Reported by Edmund Wong at [1]. [1] https://lists.sfconservancy.org/pipermail/kallithea-general/2019q4/003071.html