zfs at boot - only one of these lines works

configuration.nix

@@ -7,7 +7,11 @@
 {
   # Bootloader.
   boot.loader.systemd-boot.enable = true;
-
+  # boot.kernelPackages = config.boot.zfs.package.latestCompatibleLinuxPackages;
+  # boot.kernelPackages = pkgs.linuxPackages_6_6;
+  # boot.extraModulePackages = [ pkgs.zfsUnstable ];
+  # boot.kernelModules = [ "zfs" ];
+  boot.supportedFilesystems = [ "zfs" ];
 
   imports = [ 
     ./modules/networking.nix 
@@ -63,13 +67,22 @@
     desktopManager = {
       xterm.enable = false;
       gnome.enable = true;
+     #  xfce = {
+     #    enable = true;
+     #    # noDesktop = true;
+     #    enableXfwm = false;
+     #  };
       # plasma6.enable = true;
     };
     displayManager.gdm.enable = true;
-    # displayManager.defaultSession = "plasmax11";
+    # displayManager.defaultSession = "xfce+stumpwm";
+    # windowManager = {
+    #   stumpwm.enable = true;
+    #   # xmonad.enable = true;
+    # };
   };
   # console.useXkbConfig = true;
-  console.keyMap = ./galvatron/keys.map;
+  # console.keyMap = ./galvatron/keys.map;
   environment.gnome.excludePackages = with pkgs.gnome; [
     baobab
     cheese
@@ -90,7 +103,7 @@
 
   services.avahi = {
     enable = true;
-    nssmdns4 = true;
+    nssmdns = true;
     publish = {
       enable = true;
       addresses = true;
@@ -154,7 +167,6 @@
     vim
     emacs29-pgtk
     nfs-utils
-    devenv
     cmake
     fontconfig
     harfbuzz
@@ -186,6 +198,7 @@
     ACTION=="add", ATTRS{idProduct}=="1500", ATTRS{idVendor}=="05ac", DRIVERS=="usb", RUN+="${pkgs.sg3_utils}/bin/sg_raw /dev/$kernel EA 00 00 00 00 00 01"
   '';
 
+  xdg.portal.enable = true;
   services.flatpak.enable = true;
 
   # Some programs need SUID wrappers, can be configured further or are

flake.nix

@@ -142,7 +142,10 @@
             ./configuration.nix {
 	      services.xserver.videoDrivers = [ "modesetting" "displaylink" ];
 	      boot.loader.efi.canTouchEfiVariables = true;
-              networking.hostName = "knockout";
+              networking = {
+		hostName = "knockout";
+		hostId = "499130bf";
+	      };
 	      sound.enable = true;
             }
 	    ./modules/droidcam-obs.nix # only this machine

hardware/knockout-hw.nix

@@ -10,7 +10,7 @@
 
   boot.initrd.availableKernelModules = [ "xhci_pci" "thunderbolt" "nvme" "usb_storage" "sd_mod" ];
   boot.initrd.kernelModules = [ ];
-  boot.kernelModules = [ "kvm-intel" ];
+  boot.kernelModules = [ "kvm-intel" "zfs" ];
   boot.extraModulePackages = [ ];
 
   fileSystems."/" =