Fix windows

scripts/build_exe.bat

@@ -8,11 +8,14 @@ echo =====================================
 echo.
 
 REM Check if PyInstaller is installed
-python -c "import PyInstaller" 2>nul
+python -m PyInstaller --version >nul 2>&1
 if errorlevel 1 (
     echo Installing PyInstaller...
     python -m pip install pyinstaller
     echo.
+) else (
+    echo PyInstaller found
+    echo.
 )
 
 REM Clean previous builds