gracefully fallback if atuin or zoxide aren't installed

Dockerfile

@@ -1,4 +1,4 @@
-FROM alpine:latest
+FROM alpine:edge
 RUN apk --no-cache add git curl
 RUN sh -c "$(curl -fsLS git.io/chezmoi)" -- init --apply candrewlee14
 ENV SHELL /usr/bin/fish

dot_config/private_fish/config.fish

@@ -1,7 +1,11 @@
 if status is-interactive
     # Commands to run in interactive sessions can go here
+    if type -q $zoxide
         zoxide init fish | source
+    end
+    if type -q $atuin
         atuin init fish | source
+    end
 
     if test -f ~/.config/fish/config.fish.local
         source ~/.config/fish/config.fish.local