From 7f6a6772dd5f2b46af77264a20c20b8ac983af8b Mon Sep 17 00:00:00 2001
From: SebastianStork <git@sstork.dev>
Date: Sun, 8 Mar 2026 12:45:07 +0100
Subject: [PATCH 1/3] desktop, laptop, srv-core: Use `swap` instead of `zram
 swap`

---
 hosts/desktop/hardware.nix  | 4 ++++
 hosts/laptop/hardware.nix   | 4 ++++
 hosts/srv-core/hardware.nix | 4 ++++
 hosts/vps-ns/hardware.nix   | 2 ++
 hosts/vps-www/hardware.nix  | 2 ++
 profiles/core.nix           | 2 --
 6 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/hosts/desktop/hardware.nix b/hosts/desktop/hardware.nix
index a69b7d9..4e4df2f 100644
--- a/hosts/desktop/hardware.nix
+++ b/hosts/desktop/hardware.nix
@@ -20,6 +20,10 @@ _: {
       "usbhid"
       "sd_mod"
     ];
+    kernelParams = [
+      "zswap.enabled=1"
+      "zswap.shrinker_enabled=1"
+    ];
   };
 
   # Prevent immediate wake-up from suspend caused by the logi bolt receiver
diff --git a/hosts/laptop/hardware.nix b/hosts/laptop/hardware.nix
index f3153a5..e38b8ca 100644
--- a/hosts/laptop/hardware.nix
+++ b/hosts/laptop/hardware.nix
@@ -18,6 +18,10 @@
       "usb_storage"
       "sd_mod"
     ];
+    kernelParams = [
+      "zswap.enabled=1"
+      "zswap.shrinker_enabled=1"
+    ];
   };
 
   services = {
diff --git a/hosts/srv-core/hardware.nix b/hosts/srv-core/hardware.nix
index ac0e37c..888a405 100644
--- a/hosts/srv-core/hardware.nix
+++ b/hosts/srv-core/hardware.nix
@@ -10,6 +10,10 @@ _: {
       "sd_mod"
       "sdhci_pci"
     ];
+    kernelParams = [
+      "zswap.enabled=1"
+      "zswap.shrinker_enabled=1"
+    ];
 
     supportedFilesystems = [ "bcachefs" ];
 
diff --git a/hosts/vps-ns/hardware.nix b/hosts/vps-ns/hardware.nix
index 073f92f..ea58368 100644
--- a/hosts/vps-ns/hardware.nix
+++ b/hosts/vps-ns/hardware.nix
@@ -12,4 +12,6 @@
     "sd_mod"
     "sr_mod"
   ];
+
+  zramSwap.enable = true;
 }
diff --git a/hosts/vps-www/hardware.nix b/hosts/vps-www/hardware.nix
index 073f92f..ea58368 100644
--- a/hosts/vps-www/hardware.nix
+++ b/hosts/vps-www/hardware.nix
@@ -12,4 +12,6 @@
     "sd_mod"
     "sr_mod"
   ];
+
+  zramSwap.enable = true;
 }
diff --git a/profiles/core.nix b/profiles/core.nix
index 53f02d1..c2913bc 100644
--- a/profiles/core.nix
+++ b/profiles/core.nix
@@ -93,8 +93,6 @@
     vimAlias = true;
   };
 
-  zramSwap.enable = true;
-
   environment.systemPackages = [
     (lib.hiPrio pkgs.uutils-coreutils-noprefix)
     pkgs.git

From 97e5601cf286a89c566f50c756d498e99393a05d Mon Sep 17 00:00:00 2001
From: SebastianStork <git@sstork.dev>
Date: Sun, 8 Mar 2026 12:45:49 +0100
Subject: [PATCH 2/3] desktop, laptop, srv-core: Enable discards on the swap
 partition

---
 hosts/desktop/disko.nix  | 1 +
 hosts/laptop/disko.nix   | 1 +
 hosts/srv-core/disko.nix | 5 ++++-
 3 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/hosts/desktop/disko.nix b/hosts/desktop/disko.nix
index 4eafc11..1c8789e 100644
--- a/hosts/desktop/disko.nix
+++ b/hosts/desktop/disko.nix
@@ -45,6 +45,7 @@
           size = "20G";
           content = {
             type = "swap";
+            discardPolicy = "both";
             resumeDevice = true;
           };
         };
diff --git a/hosts/laptop/disko.nix b/hosts/laptop/disko.nix
index 4a0923f..7dbe535 100644
--- a/hosts/laptop/disko.nix
+++ b/hosts/laptop/disko.nix
@@ -42,6 +42,7 @@
           size = "20G";
           content = {
             type = "swap";
+            discardPolicy = "both";
             resumeDevice = true;
           };
         };
diff --git a/hosts/srv-core/disko.nix b/hosts/srv-core/disko.nix
index b1c4d38..8cd022a 100644
--- a/hosts/srv-core/disko.nix
+++ b/hosts/srv-core/disko.nix
@@ -16,7 +16,10 @@
           partitions = {
             swap = {
               size = "8G";
-              content.type = "swap";
+              content = {
+                type = "swap";
+                discardPolicy = "both";
+              };
             };
             root = {
               size = "100%";

From 73b1eedd22a858d20b5db47fe8a18f8265fba8af Mon Sep 17 00:00:00 2001
From: SebastianStork <git@sstork.dev>
Date: Sun, 8 Mar 2026 12:46:08 +0100
Subject: [PATCH 3/3] bluethoot: Don't start on boot

---
 modules/nixos/services/bluetooth.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/nixos/services/bluetooth.nix b/modules/nixos/services/bluetooth.nix
index 31d4f36..aa9d0ae 100644
--- a/modules/nixos/services/bluetooth.nix
+++ b/modules/nixos/services/bluetooth.nix
@@ -6,7 +6,7 @@
     hardware = {
       bluetooth = {
         enable = true;
-        powerOnBoot = true;
+        powerOnBoot = false;
       };
       logitech.wireless.enable = true;
     };