zsh: Disable globbing of # globally

Otherwise using nix shell et al. as root is a pain.

modules/default.nix

@@ -64,8 +64,14 @@
       # Clean temporary files on boot
       boot.cleanTmpDir = true;
 
-      # Set zsh as default shell
-      programs.zsh.enable = true;
+      # Set zsh as default shell with reasonable default config for all users
+      programs.zsh = {
+        enable = true;
+        loginShellInit = ''
+          # do not glob # (conflicts with nix flakes)
+          disable -p '#'
+        '';
+      };
       users.defaultUserShell = pkgs.zsh;
       environment.etc."zshrc.local".source = "${pkgs.grml-zsh-config}/etc/zsh/zshrc";