From 52fb5c7e617a11e898e010119fa97956eaebf384 Mon Sep 17 00:00:00 2001
From: Gregor Kleen <gkleen@yggdrasil.li>
Date: Mon, 24 Mar 2025 13:20:00 +0100
Subject: ...

---
 hosts/surtr/default.nix | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/hosts/surtr/default.nix b/hosts/surtr/default.nix
index e1fb2046..4d587161 100644
--- a/hosts/surtr/default.nix
+++ b/hosts/surtr/default.nix
@@ -28,6 +28,15 @@ with lib;
       zfs.devNodes = "/dev"; # /dev/vda2 does not show up in /dev/disk/by-id
 
       kernelModules = ["ptp_kvm"];
+      kernelPatches = [
+        { name = "zswap-default";
+          patch = null;
+          extraStructuredConfig = with lib.kernel; {
+            ZSWAP_DEFAULT_ON = yes;
+            ZSWAP_SHRINKER_DEFAULT_ON = yes;
+          };
+        }
+      ];
     };
 
     fileSystems = {
@@ -36,6 +45,9 @@ with lib;
           fsType = "vfat";
         };
     };
+    swapDevices = [
+      { label = "swap"; }
+    ];
 
     networking = {
       hostName = "surtr";
-- 
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