_pyrepl/pydoc import error in build

[Alex25820]

When creating a Windows build using Flet 0.86.1 (Python 3.14) I get the following error:

ModuleNotFoundError: No module named '_pyrepl'

This seems to be caused by importing pydoc. My hypothesis is that serious python doesn't include the private Python module _pyrepl in its Python 3.14 version.

---

I discovered this bug when updating from Flet 0.84.0 to 0.86.1. It was triggered by importing NLTK which is a dependency of my Flet app.

Initial log

Traceback (most recent call last):
  File "<sp_script>", line 242, in <module>
  File "<sp_script>", line 208, in _sp_run_module_as_main
  File "C:\Users\alex\AppData\Local\Temp\serious_python_temp563367bc\main.py", line 5, in <module>
  File "C:\Users\alex\AppData\Local\Temp\serious_python_temp563367bc\gui\gui.py", line 11, in <module>
  File "C:\Users\alex\AppData\Local\Temp\serious_python_temp563367bc\gui\views\gui_view_startup.py", line 17, in <module>
  File "C:\Users\alex\AppData\Local\Temp\serious_python_temp563367bc\textProcessor.py", line 3, in <module>
  File "C:\Users\alex\PythonProjects\Project\build\site-packages\nltk\__init__.py", line 133, in <module>
  File "C:\Users\alex\PythonProjects\Project\build\site-packages\nltk\collocations.py", line 36, in <module>
  File "C:\Users\alex\PythonProjects\Project\build\site-packages\nltk\metrics\__init__.py", line 38, in <module>
  File "C:\Users\alex\PythonProjects\Project\build\site-packages\nltk\metrics\scores.py", line 19, in <module>
  File "C:\Users\alex\PythonProjects\Project\build\site-packages\nltk\util.py", line 11, in <module>
  File "D:\a\python-build\python-build\windows\python-windows-for-dart-3.14.6\Lib\pydoc.py", line 81, in <module>
ModuleNotFoundError: No module named '_pyrepl'

---

Minimal steps to reproduce the error:

1. Create a new Flet project with Flet version 0.86.1 using flet create.
2. Paste the following in to main.py:

import pydoc
import flet as ft

def main(page: ft.Page):
    print(pydoc.describe(page))

if __name__ == "__main__":
    ft.run(main)

3. Run flet build windows.
4. Run the build exe, the following error will be displayed when the app starts:

Traceback (most recent call last):
  File "<sp_script>", line 242, in <module>
  File "<sp_script>", line 208, in _sp_run_module_as_main
  File "C:\Users\alex\AppData\Local\Temp\serious_python_tempe6014a50\main.py", line 1, in <module>
  File "D:\a\python-build\python-build\windows\python-windows-for-dart-3.14.6\Lib\pydoc.py", line 81, in <module>
ModuleNotFoundError: No module named '_pyrepl'

I have only tested this on Windows.

[FeodorFitsner]

Working on a fix.