4 files changed, 48 insertions, 2 deletions
diff --git a/sys/core/core.nix b/sys/core/core.nix
index ba38eb9..428d7ea 100644
--- a/sys/core/core.nix
+++ b/sys/core/core.nix
@@ -13,6 +13,7 @@ in
     ./localization.nix
     ./memory.nix
     ./networking.nix
+    ./power.nix
     ./security.nix
     ./storage.nix
     ./users.nix
diff --git a/sys/core/drivers.nix b/sys/core/drivers.nix
index a01bb54..c769786 100644
--- a/sys/core/drivers.nix
+++ b/sys/core/drivers.nix
@@ -16,6 +16,7 @@ in
       services.smartd.enable = true;
       hardware.sensor.iio.enable = true;
       hardware.enableAllFirmware = true;
+      hardware.cpu.amd.updateMicrocode = true;
       hardware.graphics = {
         enable = true;
         enable32Bit = true;
@@ -24,7 +25,6 @@ in
 
     (lib.mkIf cfg.amd.enable {
       services.xserver.videoDrivers = [ "amdgpu" ];
-      hardware.cpu.amd.updateMicrocode = true;
       hardware.amdgpu = {
         initrd.enable = true;
         overdrive.enable = true;
diff --git a/sys/core/power.nix b/sys/core/power.nix
new file mode 100644
index 0000000..f67665e
--- /dev/null
+++ b/sys/core/power.nix
@@ -0,0 +1,18 @@
+{ config, lib, ... }:
+let
+  cfg = config.sys.core.power;
+in
+{
+  options.sys.core.power.enable = lib.mkEnableOption "enables AMD-optimized power management";
+  config = lib.mkIf cfg.enable {
+    services.power-profiles-daemon.enable = true;
+
+    boot.kernelParams = [
+      "amd_pstate=active"
+      "nvme_core.default_ps_max_latency_us=0"
+    ];
+
+    powerManagement.powertop.enable = true;
+    services.thermald.enable = true;
+  };
+}
diff --git a/sys/core/storage.nix b/sys/core/storage.nix
index 6e2dab8..22abcd7 100644
--- a/sys/core/storage.nix
+++ b/sys/core/storage.nix
@@ -3,8 +3,35 @@ let
   cfg = config.sys.core.storage;
 in
 {
-  options.sys.core.storage.enable = lib.mkEnableOption "enables storage management";
+  options.sys.core.storage = {
+    enable = lib.mkEnableOption "enables storage management";
+    
+    keepDays = lib.mkOption {
+      type = lib.types.int;
+      default = 14;
+      description = "Number of days to keep old Nix generations before GC.";
+    };
+  };
   config = lib.mkIf cfg.enable {
     nix.settings.auto-optimise-store = true;
+    
+    nix.gc = {
+      automatic = true;
+      dates = "weekly";
+      options = "--delete-older-than ${toString cfg.keepDays}d";
+    };
+
+    services.fstrim.enable = true;
+
+    services.btrfs.autoScrub = {
+      enable = true;
+      interval = "monthly";
+      fileSystems = [ "/" ];
+    };
+
+    boot.tmp = {
+      useTmpfs = true;
+      tmpfsSize = "50%";
+    };
   };
 }