refactor

modules/nixos/system/zfs/default.nix

@@ -0,0 +1,47 @@
+{ config, lib, ... }:
+
+let
+  cfg = config.plusultra.system.zfs;
+
+  inherit (lib) mkEnableOption mkIf mkDefault;
+  inherit (lib.plusultra) mkOpt enabled;
+  inherit (lib.types) listOf str;
+in
+{
+  options.plusultra.system.zfs = {
+    enable = mkEnableOption "ZFS support";
+
+    pools = mkOpt (listOf str) [ "rpool" ] "The ZFS pools to manage.";
+
+    auto-snapshot = {
+      enable = mkEnableOption "ZFS auto snapshotting";
+    };
+  };
+
+  config = mkIf cfg.enable {
+    boot.kernelPackages = config.boot.zfs.package.latestCompatibleLinuxPackages;
+
+    services.zfs = {
+      autoScrub = {
+        enable = true;
+        pools = cfg.pools;
+      };
+
+      autoSnapshot = mkIf cfg.auto-snapshot.enable {
+        enable = true;
+        flags = "-k -p --utc";
+        weekly = mkDefault 3;
+        daily = mkDefault 3;
+        hourly = mkDefault 0;
+        frequent = mkDefault 0;
+        monthly = mkDefault 2;
+      };
+    };
+
+    plusultra = {
+      tools = {
+        icehouse = enabled;
+      };
+    };
+  };
+}