Unable to install forked repository from github

[SigveSjovold]

Describe the bug
I have made a fork of the chainlit repo and made some slight changes that can be seen in PR #1599. I have installed the dependencies by running:
cd backend
poetry install --with tests --with mypy --with dev

Then I install my fork by running:
pip install git+https://github.com/SigveSjovold/chainlit.git#subdirectory=backend

This installation is successful, but when I start my application I see this:
Traceback (most recent call last):
File "", line 198, in _run_module_as_main
File "", line 88, in run_code
File "C:(...)\Scripts\chainlit.exe_main.py", line 8, in
File "C:(...)\Lib\site-packages\click\core.py", line 1157, in call
return self.main(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:(...)\Lib\site-packages\click\core.py", line 1078, in main
rv = self.invoke(ctx)
^^^^^^^^^^^^^^^^
File "C:(...)\Lib\site-packages\click\core.py", line 1688, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:(...)\Lib\site-packages\click\core.py", line 1434, in invoke
return ctx.invoke(self.callback, **ctx.params)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:(...)\Lib\site-packages\click\core.py", line 783, in invoke
return callback(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:(...)\Lib\site-packages\chainlit\cli_init.py", line 214, in chainlit_run
run_chainlit(target)
File "C:(...)\Lib\site-packages\chainlit\cli_init.py", line 51, in run_chainlit
from chainlit.server import app
File "C:(...)\Lib\site-packages\chainlit\server.py", line 195, in
build_dir = get_build_dir("frontend", "frontend")
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:(...)\Lib\site-packages\chainlit\server.py", line 192, in get_build_dir
raise FileNotFoundError(f"{local_target} built UI dir not found")
FileNotFoundError: frontend built UI dir not found

How can I fix this?

[dosubot]

I found 1 similar thread that might be helpful:

[1] The suggested solution is to ensure that the frontend build directory exists and to build the frontend if it is missing by running specific commands in the frontend directory. This directly addresses the FileNotFoundError you are encountering.

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[desaxce]

I think you have to generate the frontend at least once. From the repo root, run pnpm run buildUi.

[ZaneZaiontz]

What version of poetry are you using? I had a similar issue when using poetry 2.0.0 and reverting back to 1.8.5 fixed my building issue.

[desaxce]

What version of poetry are you using? I had a similar issue when using poetry 2.0.0 and reverting back to 1.8.5 fixed my building issue.

Good point, you can change pyproject.toml to specify the poetry-core version:

[build-system]
requires = ["poetry-core==1.9.1"]
build-backend = "poetry.core.masonry.api"

The recent 2.0.0 release broke the copying of frontend dir during wheel build.