pep517 build fails, because the build isn't able to find cargo?

[jm-nab]

Originally justed wanted to run poetry install

Using python 3.13.0b1

pip wheel --no-cache-dir --use-pep517 "rpds-py (==0.18.0)"

Note: This error originates from the build backend, and is likely not a problem with poetry but with pydantic-core (2.18.2) not supporting PEP 517 builds. You can verify this by running 'pip wheel --no-cache-dir --use-pep517 "pydantic-core (==2.18.2)"'.


 ChefBuildError

 Backend subprocess exited when trying to invoke build_wheel
 
 Running `maturin pep517 build-wheel -i /tmp/tmptnibnceh/.venv/bin/python --compatibility off`
 💥 maturin failed
   Caused by: Cargo metadata failed. Do you have cargo in your PATH?
   Caused by: No such file or directory (os error 2)
 Error: command ['maturin', 'pep517', 'build-wheel', '-i', '/tmp/tmptnibnceh/.venv/bin/python', '--compatibility', 'off'] returned non-zero exit status 1
 

 at /usr/local/lib/python3.13/site-packages/poetry/installation/chef.py:164 in _prepare
     160│ 
     161│                 error = ChefBuildError("\n\n".join(message_parts))
     162│ 
     163│             if error is not None:
   → 164│                 raise error from None
     165│ 
     166│             return path
     167│ 
     168│     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 rpds-py (0.18.0) not supporting PEP 517 builds. 
You can verify this by running 
'pip wheel --no-cache-dir --use-pep517 "rpds-py (==0.18.0)"'.

error building image: error building stage: failed to execute command: waiting for process to exit: exit status 1

[Julian]

Hi. Your error has pydantic-core in it rather than this package.

But PyO3/maturin also don't yet support 3.13. #72 has a link to the upstream issue.

[Julian]

Oh your error seems to have both this and pydantic in it, but yeah the diagnosis is possibly the same thing I mentioned.

[jm-nab]

Thanks

here's a docker snippet for anyone else who runs into this issue:

RUN curl https://sh.rustup.rs -sSf | bash -s -- -y
RUN echo '. $HOME/.cargo/env' >> $HOME/.bashrc
ENV PATH=$PATH:$HOME/.cargo/bin/
ENV PYO3_USE_ABI3_FORWARD_COMPATIBILITY=1

[jm-nab]

Also this: pydantic/pydantic-core#1264 (comment)