diff --git a/nixos/.config/nixos/derivations/extra-icons/default.nix b/nixos/.config/nixos/derivations/extra-icons/default.nix
new file mode 100644
index 0000000..c8e7c9a
--- /dev/null
+++ b/nixos/.config/nixos/derivations/extra-icons/default.nix
@@ -0,0 +1,35 @@
+{ lib
+, pkgs
+, stdenv
+, fetchurl
+}:
+
+stdenv.mkDerivation rec {
+  pname = "extra-icons";
+  version = "0.0.1";
+
+  src = ./.;
+
+  nativeBuildInputs = with pkgs; [
+    imagemagick # for resize
+    inkscape # for svgs
+  ];
+
+  postInstall = ''
+    mkdir -p $out/share/icons/hicolor/scalable/apps/
+    for icon in ${src}/raster/*; do
+      icon_name=$(basename "$icon")
+      inkscape -p "$icon" -o "$out/share/icons/hicolor/scalable/apps/extra-scale-''${icon_name%.*}.svg"
+      for i in 16 24 48 64 96 128 256 512; do
+        mkdir -p $out/share/icons/hicolor/''${i}x''${i}/apps
+        magick convert -background none -resize "''${i}x''${i}" "$icon" "$out/share/icons/hicolor/''${i}x''${i}/apps/extra-$icon_name"
+      done
+    done
+    for icon in ${src}/vector/*; do
+      icon_name=$(basename "$icon")
+      cp "$icon" "$out/share/icons/hicolor/scalable/apps/extra-scale-$icon_name"
+      inkscape -p "$icon" -o "$out/share/icons/hicolor/scalable/apps/extra-''${icon_name%.*}-svg.svg"
+    done
+  '';
+}
+
diff --git a/nixos/.config/nixos/derivations/zen-browser/default.nix b/nixos/.config/nixos/derivations/zen-browser/default.nix
new file mode 100644
index 0000000..1d40da1
--- /dev/null
+++ b/nixos/.config/nixos/derivations/zen-browser/default.nix
@@ -0,0 +1,29 @@
+{ appimageTools, fetchurl, ... }:
+let
+  pname = "zen";
+  version = "latest";
+
+  src = fetchurl {
+    url = "https://github.com/zen-browser/desktop/releases/latest/download/zen-x86_64.AppImage";
+    sha256 = "sha256-hZiJ8JLzLhtD1W8DAso3yBAJYhFE+nJEbQJa59AWjnU=";
+  };
+
+  appimageContents = appimageTools.extract {
+    inherit pname version src;
+  };
+in
+appimageTools.wrapType2 {
+  inherit pname version src;
+
+  extraInstallCommands = ''
+    # Install .desktop file
+    install -m 444 -D ${appimageContents}/zen.desktop $out/share/applications/${pname}.desktop
+    # Install icon
+    install -m 444 -D ${appimageContents}/zen.png $out/share/icons/hicolor/128x128/apps/${pname}.png
+  '';
+
+  meta = {
+    platforms = [ "x86_64-linux" ];
+  };
+}
+