create flake.nix

flake.nix

@@ -0,0 +1,68 @@
+{
+  description = "Cisco Packet Tracer 7";
+  inputs.nixpkgs.url = "github:nixos/nixpkgs/nixos-24.11";
+  outputs = { self, nixpkgs, flake-utils, ... }:
+    let
+      pkgs = import nixpkgs { system = "x86_64-linux"; };
+      ptFiles = pkgs.stdenv.mkDerivation {
+        name = "PacketTracer7drv";
+        version = "7.3.1";
+        dontUnpack = true;
+        src = pkgs.fetchurl {
+          url = "http://kafpi.local/PacketTracer_731_amd64.deb";
+          hash = "sha256-w5gC0V3WHQC6J/uMEW2kX9hWKrS0mZZVWtZriN6s4n8=";
+        };
+        nativeBuildInputs = with pkgs; [ dpkg makeWrapper ];
+        installPhase = ''
+          dpkg-deb -x $src $out
+          makeWrapper "$out/opt/pt/bin/PacketTracer7" "$out/bin/packettracer7" --prefix LD_LIBRARY_PATH : "$out/opt/pt/bin"
+        '';
+      };
+      ptFhsEnv = pkgs.buildFHSEnv {
+        name = "packettracer7";
+        runScript = "${ptFiles}/bin/packettracer7";
+
+        targetPkgs = pkgs:
+          with pkgs; [
+            alsa-lib
+            dbus
+            expat
+            fontconfig
+            glib
+            libglvnd
+            libpulseaudio
+            libudev0-shim
+            libxkbcommon
+            libxml2
+            libxslt
+            nspr
+            nss
+            xorg.libICE
+            xorg.libSM
+            xorg.libX11
+            xorg.libXScrnSaver
+          ];
+      };
+
+      packettracer7 = pkgs.stdenv.mkDerivation {
+        pname = "ciscoPacketTracer7";
+        version = "7.3.1";
+        dontUnpack = true;
+        installPhase = ''
+          mkdir $out
+          ${pkgs.xorg.lndir}/bin/lndir -silent ${ptFhsEnv} $out
+        '';
+        desktopItems = [
+          (pkgs.makeDesktopItem {
+            name = "cisco-pt7.desktop";
+            desktopName = "Cisco Packet Tracer 7";
+            icon = "${ptFiles}/opt/pt/art/app.png";
+            exec = "packettracer7 %f";
+            mimeTypes =
+              [ "application/x-pkt" "application/x-pka" "application/x-pkz" ];
+          })
+        ];
+        nativeBuildInputs = [ pkgs.xorg.lndir ];
+      };
+    in { packages.x86_64-linux.default = packettracer7; };
+}