switch to zsh

configuration.nix

@@ -81,6 +81,14 @@
       eval "$(devenv hook bash)"
     '';
   };
+  programs.zsh = {
+    enable = true;
+    enableCompletion = true;
+    autosuggestions.enable = true;
+    syntaxHighlighting.enable = true;
+    ohMyZsh.enable = true;
+    ohMyZsh.theme = "gentoo";
+  };
   # Enable CUPS to print documents.
   services.printing.enable = true;
 
@@ -118,6 +126,7 @@
     nerd-fonts.symbols-only
   ];
   users.users."lucy" = {
+    shell = pkgs.zsh;
     isNormalUser = true;
     description = "lucy";
     extraGroups = [