refactor some things, might have broken everything

osConfigs/modules/zfs.nix

@@ -0,0 +1,13 @@
+{ pkgs, config, lib, ... }:
+{
+	options.mods.zfs.enable = lib.mkOption {
+		type = lib.types.bool;
+		default = false;
+		description = "does this system support zfs filesystems";
+	};
+
+	config = lib.mkIf config.mods.zfs.enable {
+  		boot.kernelPackages = pkgs.linuxPackages;
+  		boot.supportedFilesystems = [ "zfs" ];
+	};
+}