Major rewrite: switching back to Arch from NixOS

home/.config/zsh/rc/completion.zsh

@@ -0,0 +1,19 @@
+# Autocompletion behavior of ZSH
+
+autoload -Uz compinit
+zmodload -i zsh/complist                # load completion list
+
+if [[ -n "$(print ${ZDOTDIR:-$HOME}/.zcompdump(Nmh+5))" ]]; then
+  # Re-check for new completions, re-creating .zcompdump if necessary.
+  # This check can be quite slow and it's rare that we actually have new completions to load.
+  # For that reason, we only do this if the compdump file is older than 5 hours.
+  compinit
+else
+  # This will omit the check for new completions,
+  # only re-creating .zcompdump if it doesn't yet exist.
+  compinit -C
+fi
+
+zstyle ':completion:*' menu select      # select completions with arrow keys
+zstyle ':completion:*' group-name ''    # group results by category
+zstyle ':completion:::::' completer _expand _complete _ignored _approximate # enable approximate matches for completion