diff --git a/overlay.nix b/overlay.nix
index 195692d..b00903a 100644
--- a/overlay.nix
+++ b/overlay.nix
@@ -4,19 +4,70 @@
   ...
 }:
 with inputs;
-  final: prev: let
-    pkgsConfig = {
-      inherit system;
-      config.allowUnfree = true;
-    };
+  final: prev: {
+    # WebOne HTTP proxy.
+    webone = prev.pkgs.callPackage ./packages/webone {};
 
-    pkgs-unstable = import nixpkgs-unstable pkgsConfig;
-    pkgs-pr-feishin = import nixpkgs-pr-feishin pkgsConfig;
-  in {
-    # My packages.
-    webone = prev.pkgs.callPackage ./packages/webone {}; # WebOne HTTP proxy.
-    yazi-flavour-kanagawa-dragon = prev.pkgs.callPackage ./packages/yazi-flavour-kanagawa-dragon {}; # Kanagawa theme for yazi.
-    cups-dymo = prev.pkgs.callPackage ./packages/cups-dymo {}; # Dymo label printer drivers.
+    # Yazi Gruvbox theme.
+    yazi-flavour-kanagawa-dragon = prev.pkgs.callPackage ./packages/yazi-flavour-kanagawa-dragon {};
+
+    # Dymo label printer drivers.
+    cups-dymo = prev.pkgs.callPackage ./packages/cups-dymo {};
+
+    # Latest protonmail-desktop
+    protonmail-desktop = (import nixpkgs-unstable {inherit system;}).protonmail-desktop;
+
+    # Latest Rockbox Utility.
+    rockbox-utility = (import nixpkgs-unstable {inherit system;}).rockbox-utility;
+
+    # Latest FluffyChat.
+    fluffychat =
+      (import nixpkgs-unstable
+        {
+          inherit system;
+          overlays = [
+            (final: prev: {
+              fluffychat = prev.fluffychat.overrideAttrs (prevAttrs: {
+                desktopItems = [
+                  ((builtins.elemAt prevAttrs.desktopItems 0).override {startupWMClass = "fluffychat";})
+                ];
+              });
+            })
+          ];
+        }).fluffychat;
+
+    # Latest Feishin.
+    feishin =
+      (import nixpkgs-pr-feishin {
+        inherit system;
+        overlays = [
+          (final: prev: {
+            feishin = prev.feishin.overrideAttrs (prevAttrs: rec {
+              pname = "feishin";
+              version = "0.18.0";
+
+              src = prev.fetchFromGitHub {
+                owner = "jeffvli";
+                repo = "feishin";
+                rev = "v${version}";
+                hash = "sha256-4gcS7Vd7LSpEByO2Hlk6nb8V2adBPh5XwWGCu2lwOA4=";
+              };
+
+              pnpmDeps = prev.pnpm_10.fetchDeps {
+                inherit pname version src;
+                hash = "sha256-1MGxrUcfvazxAubaYAsQuulUKm05opWOIC7oaLzjr7o=";
+              };
+            });
+          })
+        ];
+      }).feishin;
+
+    # PrismLauncher with Temurin JRE;
+    prismlauncher = prev.prismlauncher.override {
+      jdks = [
+        prev.pkgs.temurin-jre-bin
+      ];
+    };
 
     # Kanagawa Dragon theme for tmux.
     tmuxPlugins =
@@ -35,63 +86,6 @@ with inputs;
         };
       };
 
-    ## Unstable channel. ##
-
-    protonmail-desktop = pkgs-unstable.protonmail-desktop; # Protonmail desktop client.
-    rockbox-utility = pkgs-unstable.rockbox-utility; # Rockbox installer.
-
-    # Fluffychat.
-    fluffychat =
-      (pkgs-unstable
-        // {
-          overlay = [
-            (final: prev: {
-              fluffychat = prev.fluffychat.overrideAttrs (prevAttrs: {
-                desktopItems = [
-                  ((builtins.elemAt prevAttrs.desktopItems 0).override {startupWMClass = "fluffychat";})
-                ];
-              });
-            })
-          ];
-        }).fluffychat;
-
-    ## Pull requests. ##
-
-    # Feishin music player.
-    feishin =
-      (pkgs-pr-feishin
-        // {
-          overlay = [
-            (final: prev: {
-              feishin = prev.feishin.overrideAttrs (prevAttrs: rec {
-                pname = "feishin";
-                version = "0.18.0";
-
-                src = prev.fetchFromGitHub {
-                  owner = "jeffvli";
-                  repo = "feishin";
-                  rev = "v${version}";
-                  hash = "sha256-4gcS7Vd7LSpEByO2Hlk6nb8V2adBPh5XwWGCu2lwOA4=";
-                };
-
-                pnpmDeps = prev.pnpm_10.fetchDeps {
-                  inherit pname version src;
-                  hash = "sha256-1MGxrUcfvazxAubaYAsQuulUKm05opWOIC7oaLzjr7o=";
-                };
-              });
-            })
-          ];
-        }).feishin;
-
-    ## Modifications ##
-
-    # PrismLauncher with Temurin JRE;
-    prismlauncher = prev.prismlauncher.override {
-      jdks = [
-        prev.pkgs.temurin-jre-bin
-      ];
-    };
-
     # Custom iosevka build.
     iosevka = prev.iosevka.override {
       set = "Custom";
diff --git a/suites/default.nix b/suites/default.nix
index 789071c..38529df 100644
--- a/suites/default.nix
+++ b/suites/default.nix
@@ -33,12 +33,6 @@ with lib; {
   # Enable firmware updates.
   services.fwupd.enable = true;
 
-  # Enable zram swap.
-  zramSwap = {
-    enable = true;
-    algorithm = "lz4";
-  };
-
   # Set time zone.
   time.timeZone = "Australia/Perth";
 
diff --git a/suites/desktop/default.nix b/suites/desktop/default.nix
index e117819..5af203f 100755
--- a/suites/desktop/default.nix
+++ b/suites/desktop/default.nix
@@ -31,6 +31,9 @@ with lib; {
     binfmt.emulatedSystems = ["aarch64-linux"];
   };
 
+  # Enable zram swap.
+  zramSwap.enable = true;
+
   # Enable smart card support (for YubiKey).
   services.pcscd.enable = true;