move common zfs settings to modules/base

modules/base/default.nix

@@ -12,6 +12,7 @@
     ./sshd
     ./unitstatus
     ./users
+    ./zfs
     ./zfsborg
   ];
 

modules/base/zfs/default.nix

@@ -0,0 +1,19 @@
+{
+  config,
+  lib,
+  ...
+}: {
+  options.mj.base.zfs = with lib.types; {
+    enable = lib.mkEnableOption "Enable common zfs options";
+  };
+
+  config = lib.mkIf config.mj.base.zfs.enable {
+    services.zfs = assert lib.assertMsg config.mj.base.unitstatus.enable "mj.base.unitstatus must be enabled"; {
+      autoScrub.enable = true;
+      trim.enable = true;
+      expandOnBoot = "all";
+    };
+
+    mj.base.unitstatus.units = ["zfs-scrub"];
+  };
+}