diff --git a/flake.nix b/flake.nix
index bc3806d..722f077 100644
--- a/flake.nix
+++ b/flake.nix
@@ -28,6 +28,7 @@
         with (import nixpkgs { system = "x86_64-linux"; });
         {
           binaryninja = callPackage ./pkgs/binary-ninja-personal { };
+          packettracer = callPackage ./pkgs/packettracer { };
         };
 
       apps."x86_64-linux" =
diff --git a/pkgs/packettracer/default.nix b/pkgs/packettracer/default.nix
new file mode 100644
index 0000000..79fbf87
--- /dev/null
+++ b/pkgs/packettracer/default.nix
@@ -0,0 +1,110 @@
+{ stdenv
+, alsaLib
+, autoPatchelfHook
+, buildFHSUserEnv
+, dbus
+, dpkg
+, expat
+, fetchurl
+, fontconfig
+, glib
+, libdrm
+, libglvnd
+, libpulseaudio
+, libudev0-shim
+, libxkbcommon
+, libxml2
+, libxslt
+, makeDesktopItem
+, makeWrapper
+, nspr
+, nss
+, xlibs
+}:
+
+let
+  version = "8.0.0";
+
+  srcName =
+    if stdenv.hostPlatform.system == "x86_64-linux" then
+      "PacketTracer_800_amd64_build212_final.deb"
+    else throw "Unsupported system: ${stdenv.hostPlatform.system}";
+
+  ptFiles = stdenv.mkDerivation {
+    name = "PacketTracer";
+    inherit version;
+
+    src = fetchurl {
+      # This file was uploaded to archive.org by someone else, but I have verified the hash.
+      url = "https://archive.org/download/packet-tracer-800-build-212-mac-notarized/${srcName}";
+      sha256 = "c9a78f9d1ee63fa421d3c531e9e1c209e425ba84d78c8e606594e4e59df535c9";
+    };
+
+    nativeBuildInputs = [
+      alsaLib
+      autoPatchelfHook
+      dbus
+      dpkg
+      expat
+      fontconfig
+      glib
+      libdrm
+      libglvnd
+      libpulseaudio
+      libudev0-shim
+      libxkbcommon
+      libxml2
+      libxslt
+      makeWrapper
+      nspr
+      nss
+      xlibs.libICE
+      xlibs.libSM
+      xlibs.libX11
+      xlibs.libxcb
+      xlibs.libXcomposite
+      xlibs.libXcursor
+      xlibs.libXdamage
+      xlibs.libXext
+      xlibs.libXfixes
+      xlibs.libXi
+      xlibs.libXrandr
+      xlibs.libXrender
+      xlibs.libXScrnSaver
+      xlibs.xcbutilimage
+      xlibs.xcbutilkeysyms
+      xlibs.xcbutilrenderutil
+      xlibs.xcbutilwm
+    ];
+
+    dontUnpack = true;
+    installPhase = ''
+      dpkg-deb -x $src $out
+      chmod 755 "$out"
+      makeWrapper "$out/opt/pt/bin/PacketTracer" "$out/bin/packettracer" \
+        --prefix LD_LIBRARY_PATH : "$out/opt/pt/bin"
+
+      # Keep source archive cached, to avoid re-downloading
+      ln -s "$src" "$out/usr/share/"
+    '';
+  };
+
+  desktopItem = makeDesktopItem {
+    name = "cisco-pt.desktop";
+    desktopName = "Packet Tracer";
+    icon = "${ptFiles}/opt/pt/art/app.png";
+    exec = "packettracer %f";
+    mimeType = "application/x-pkt;application/x-pka;application/x-pkz;";
+  };
+
+in
+buildFHSUserEnv {
+  name = "packettracer";
+  runScript = "${ptFiles}/bin/packettracer";
+  targetPkgs = pkgs: [ libudev0-shim ];
+
+  extraInstallCommands = ''
+    mkdir -p "$out/share/applications"
+    cp "${desktopItem}"/share/applications/* "$out/share/applications/"
+  '';
+}