removed old result and updated common

iso/common.nix

@@ -3,12 +3,8 @@
 let
   sovranSource = builtins.path { path = ../.; name = "sovran-systemsos"; };
 
-  pythonEnv = pkgs.python3.withPackages (ps: [ ps.pygobject3 ]);
-
   installerPy = pkgs.writeShellScriptBin "sovran-install" ''
-    export GI_TYPELIB_PATH=/run/current-system/sw/lib/girepository-1.0
-    export LD_LIBRARY_PATH=/run/current-system/sw/lib
-    exec ${pythonEnv}/bin/python3 /etc/sovran/installer.py
+    exec ${pkgs.python3}/bin/python3 /etc/sovran/installer.py
   '';
 in
 {
@@ -38,13 +34,7 @@ in
 
   environment.systemPackages = with pkgs; [
     installerPy
-    pythonEnv
-    gtk4
-    libadwaita
-    gobject-introspection
-    glib
-    pango
-    gdk-pixbuf
+    python3Packages.pygobject3
     util-linux
     disko
     parted
@@ -64,7 +54,7 @@ in
 [Desktop Entry]
 Type=Application
 Name=Sovran Guided Installer
-Exec=bash -c "DISPLAY=:0 DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/$(id -u)/bus ${installerPy}/bin/sovran-install"
+Exec=${installerPy}/bin/sovran-install
 Terminal=false
 X-GNOME-Autostart-enabled=true
 '';