diff --git a/configuration.nix b/configuration.nix
index edcc634..16c5836 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -2,7 +2,7 @@
   lib,
   config,
   pkgs,
-  simintech,
+  #simintech,
   stm32cubemx,
   packettracer7,
   inputs,
@@ -223,7 +223,56 @@ in
 
         # поставка SimInTech. Кодогенерация библиотек для ПК работает,
         # но несовместима с .dll из windows!
-        simintech.packages.x86_64-linux.simintech
+        #simintech.packages.x86_64-linux.simintech
+        (pkgs.stdenv.mkDerivation rec {
+        pname = "simintech";
+        version = "2.23.13";
+        src = builtins.fetchTarball {
+          url = "http://kafpi.local/simintech_rus_linux.tgz";
+          sha256 = "sha256:1i9plx6vx6jm38bx4kbh4piak5jwrpc4hxxjd3b89zyng1g4abvs";
+        };
+        dontFixLibtool = true;
+
+        fhsEnv = pkgs.buildFHSEnv {
+          name = "${pname}-fhs-env";
+          targetPkgs = p: with p; [
+            at-spi2-atk.out
+            gdk-pixbuf.out
+            glamoroustoolkit.out
+            glib.out
+            gtk2.out
+            libGL.out
+            libGLU.out
+            pango.out
+            xorg.libX11.out
+            zlib.out
+            (pkgs.writeShellScriptBin "firefox" "exec ${pkgs.chromium}/bin/chromium \"$@\"") # похоже, что SimInTech захардкодил Firefox, но не все так юзают Firefox
+          ];
+          runScript = "${src}/bin/mmain";
+        };
+
+        desktopItem = pkgs.makeDesktopItem {
+          name = "SimInTech";
+          exec = "simintech";
+          desktopName = "SimInTech";
+          categories = [ "Development" ];
+          icon = "simintech";
+          terminal = false;
+          startupNotify = false;
+          mimeTypes = [ "x-scheme-handler/prt" ];
+        };
+
+        installPhase = ''
+          runHook preInstall
+          mkdir -p $out/bin
+          mkdir -p $out/share/applications
+          mkdir -p $out/share/icons
+          #cp ${src}/share/icon.svg $out/share/icons/simintech.svg
+          cp ${fhsEnv}/bin/${pname}-fhs-env $out/bin/simintech
+          cp ${desktopItem}/share/applications/*.desktop $out/share/applications
+          runHook postInstall
+        '';
+      })
 
         # POSIX утилиты для совместимости
         om4