Issue with 'poetry install' when installing required modules and dependencies

[Parzival244]

Seemingly doesn't like opencv-python and pyqt5 versions:

Installing opencv-python (4.5.2.52): Failed

RuntimeError

Unable to find installation candidates for opencv-python (4.5.2.52)

at ~\AppData\Roaming\pypoetry\venv\lib\site-packages\poetry\installation\chooser.py:109 in choose_for
105│
106│ links.append(link)
107│
108│ if not links:
→ 109│ raise RuntimeError(f"Unable to find installation candidates for {package}")
110│
111│ # Get the best link
112│ chosen = max(links, key=lambda link: self._sort_key(package, link))
113│

• Installing pre-commit (2.17.0)
• Installing pyinstaller (4.5.1)
• Installing pyinstaller-versionfile (2.0.0)
• Installing pyqt5 (5.14.1): Failed

ChefBuildError

Backend 'sipbuild.api' is not available.

at ~\AppData\Roaming\pypoetry\venv\lib\site-packages\poetry\installation\chef.py:152 in _prepare
148│
149│ error = ChefBuildError("\n\n".join(message_parts))
150│
151│ if error is not None:
→ 152│ raise error from None
153│
154│ return path
155│
156│ def _prepare_sdist(self, archive: Path, destination: Path | None = None) -> Path:

Note: This error originates from the build backend, and is likely not a problem with poetry but with pyqt5 (5.14.1) not supporting PEP 517 builds. You can verify this by running 'pip wheel --use-pep517 "pyqt5 (==5.14.1)"'.

• Installing pyqt5-stubs (5.15.2.0)
• Installing python-magic (0.4.24)
• Installing tomlkit (0.7.2)

[Danthewaann]

Hi thanks for raising this issue!

I'm not able to test this locally yet, however I do remember that using Python 3.8 should work (as that was the last Python version that I tested the project with).

You can try using Python 3.8 to see if that helps. I'm afraid if I want to support later Python versions I would need to update pyqt5, which might involve a bunch of breaking changes.