How to enable bash-completions?

[p3lim]

I'm running zsh-autocomplete from nixpkgs on Debian 12, and a bunch of (bash) completions for the system packages are not included.

E.g. nix-shell -- will show arg completions, but systemctl -- will not.

I've tried messing around with compinit/bashcompinit, and I've set the skip_global_compinit=1 as suggested, but nothing seems to work.

[marlonrichert]

I looked at the source code for Debian's bash and bash-completions packages and they don't include any completion for systemctl. Do you perhaps mean sysctl?