feat(autojump): add nix-darwin install path (#12389)

Closes #12387

plugins/autojump/autojump.plugin.zsh

@@ -15,6 +15,7 @@ autojump_paths=(
   /opt/homebrew/etc/profile.d/autojump.sh                  # macOS with Homebrew (default on M1 macs)
   /opt/pkg/share/autojump/autojump.zsh                     # macOS with pkgsrc
   /etc/profiles/per-user/$USER/etc/profile.d/autojump.sh   # macOS Nix, Home Manager and flakes
+  /nix/var/nix/gcroots/current-system/sw/share/zsh/site-functions/autojump.zsh  # macOS Nix, nix-darwin
 )
 
 for file in $autojump_paths; do

plugins/fzf/fzf.plugin.zsh

@@ -1,8 +1,10 @@
 function fzf_setup_using_fzf() {
   (( ${+commands[fzf]} )) || return 1
 
-  local fzf_ver=${$(fzf --version)[1]}
-  is-at-least 0.48.0 $fzf_ver || return 1
+  # we remove "fzf " prefix, this fixes really old fzf versions behaviour
+  # see https://github.com/ohmyzsh/ohmyzsh/issues/12387
+  local fzf_ver=${"$(fzf --version)"#fzf }
+  is-at-least 0.48.0 ${${(s: :)fzf_ver}[1]} || return 1
 
   eval "$(fzf --zsh)"
 }