Build broken on python 3.13-dev

[aciba90]

rpds-py cannot be built on Python 3.13.0a6+.

Steps to reproduce

pyenv install 3.13-dev 
pyenv virtualenv 3.13-dev rpds-test
pyenv shell rpds-test 

$ pip install rpds-py
Collecting rpds-py
  Downloading rpds_py-0.18.1.tar.gz (25 kB)
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
  Preparing metadata (pyproject.toml) ... done
Building wheels for collected packages: rpds-py
  Building wheel for rpds-py (pyproject.toml) ... error
  error: subprocess-exited-with-error
  
  × Building wheel for rpds-py (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [52 lines of output]
      Running `maturin pep517 build-wheel -i /home/aciba/.pyenv/versions/3.13-dev/envs/rpds-test/bin/python --compatibility off`
      📦 Including license file "/tmp/pip-install-mpcdnjtn/rpds-py_c225fa28d6e746c5bdcd1b2440b5d7ec/LICENSE"
      🔗 Found pyo3 bindings
      🐍 Found CPython 3.13 at /home/aciba/.pyenv/versions/3.13-dev/envs/rpds-test/bin/python
      📡 Using build options features from pyproject.toml
         Compiling target-lexicon v0.12.9
         Compiling once_cell v1.18.0
         Compiling autocfg v1.1.0
         Compiling proc-macro2 v1.0.66
         Compiling libc v0.2.147
         Compiling unicode-ident v1.0.11
         Compiling parking_lot_core v0.9.8
         Compiling heck v0.4.1
         Compiling scopeguard v1.1.0
         Compiling smallvec v1.11.0
         Compiling cfg-if v1.0.0
         Compiling portable-atomic v1.6.0
         Compiling static_assertions v1.1.0
         Compiling triomphe v0.1.9
         Compiling indoc v2.0.4
         Compiling unindent v0.2.3
         Compiling archery v1.2.0
         Compiling lock_api v0.4.10
         Compiling memoffset v0.9.0
         Compiling rpds v1.1.0
         Compiling pyo3-build-config v0.20.3
         Compiling quote v1.0.31
         Compiling syn v2.0.32
         Compiling parking_lot v0.12.1
         Compiling pyo3-ffi v0.20.3
         Compiling pyo3 v0.20.3
      error: failed to run custom build command for `pyo3-ffi v0.20.3`
      
      Caused by:
        process didn't exit successfully: `/tmp/pip-install-mpcdnjtn/rpds-py_c225fa28d6e746c5bdcd1b2440b5d7ec/target/release/build/pyo3-ffi-70093274310161c8/build-script-build` (exit status: 1)
        --- stdout
        cargo:rerun-if-env-changed=PYO3_CROSS
        cargo:rerun-if-env-changed=PYO3_CROSS_LIB_DIR
        cargo:rerun-if-env-changed=PYO3_CROSS_PYTHON_VERSION
        cargo:rerun-if-env-changed=PYO3_CROSS_PYTHON_IMPLEMENTATION
        cargo:rerun-if-env-changed=PYO3_PRINT_CONFIG
        cargo:rerun-if-env-changed=PYO3_USE_ABI3_FORWARD_COMPATIBILITY
      
        --- stderr
        error: the configured Python interpreter version (3.13) is newer than PyO3's maximum supported version (3.12)
        = help: please check if an updated version of PyO3 is available. Current version: 0.20.3
        = help: set PYO3_USE_ABI3_FORWARD_COMPATIBILITY=1 to suppress this check and build anyway using the stable ABI
      warning: build failed, waiting for other jobs to finish...
      💥 maturin failed
        Caused by: Failed to build a native library through cargo
        Caused by: Cargo build finished with "exit status: 101": `env -u CARGO PYO3_ENVIRONMENT_SIGNATURE="cpython-3.13-64bit" PYO3_PYTHON="/home/aciba/.pyenv/versions/3.13-dev/envs/rpds-test/bin/python" PYTHON_SYS_EXECUTABLE="/home/aciba/.pyenv/versions/3.13-dev/envs/rpds-test/bin/python" "cargo" "rustc" "--features" "pyo3/extension-module" "--message-format" "json-render-diagnostics" "--manifest-path" "/tmp/pip-install-mpcdnjtn/rpds-py_c225fa28d6e746c5bdcd1b2440b5d7ec/Cargo.toml" "--release" "--lib"`
      Error: command ['maturin', 'pep517', 'build-wheel', '-i', '/home/aciba/.pyenv/versions/3.13-dev/envs/rpds-test/bin/python', '--compatibility', 'off'] returned non-zero exit status 1
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
  ERROR: Failed building wheel for rpds-py
Failed to build rpds-py
ERROR: Could not build wheels for rpds-py, which is required to install pyproject.toml-based projects

[Julian]

I don't personally test on 3.13 yet, though I'm of course happy to -- it's possible that PyO3 0.21 works on it / has a fix for this, but the GIL API changes were definitely not trivial for me, I haven't been able to get something working yet. I pushed my partial attempt to main...pyo3-21 -- PRs are welcome to finish that. Otherwise this will happens when it happens.

[aciba90]

Thanks for the heads-up. I have tried with PyO3 0.21 with the same result. Per PyO3/pyo3#4038, it looks like 3.13 support is a nice to have for PyO3 0.22.

[Julian]

Got it thanks for the pointer. I think the above still will be a blocker then regardless, as presumably they won't backport the 0.22 changes to 0.20 so we'll have to move up.