Until #36 is resolved, I'm attempting to work around by setting the global hook dir to be $XDG_CONFIG_HOME/git/hooks:

$ git config hooks.global
~/.config/git/hooks

But running git hooks doesn't detect that configuration or that the directory exists:

$ git hooks
Git hooks ARE installed in this repository.
Contrib hooks

And accordingly, the hooks in that global directory are not invoked on the relevant git actions.

Update: It's not ignored per-se. The issue is that ~ (or $HOME) in the configured hooks.global path are not expanded. And there doesn't seem to be any warning that the path is set (but "doesn't exist"), so it just silently fails. (Is there no verbose or debug mode to trace these things?)