error: the configured Python interpreter version (3.13) is newer than PyO3's maximum supported version (3.12)

[Rincewind76]

Hello,
I followed the installation steps on a freshly installed raspberry pi - unfortunately the build process stops after the call of
pip3 install .

This is the last part of the log file with the error message:
Compiling memoffset v0.9.0 Compiling pyo3-ffi v0.21.2 Compiling scopeguard v1.1.0 Compiling portable-atomic v1.6.0 error: failed to run custom build command forpyo3-ffi v0.21.2`

  Caused by:
    process didn't exit successfully: `/tmp/pip-install-yv27vd23/pydantic-core_97a51659f32d4ded9974e443032fc882/target/release/build/pyo3-ffi-6cec6262efb2dea2/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: 0.21.2
    = 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_BUILD_EXTENSION_MODULE="1" PYO3_ENVIRONMENT_SIGNATURE="cpython-3.13-64bit" PYO3_PYTHON="/home/tuxuser/smahub/.venv/bin/python3" PYTHON_SYS_EXECUTABLE="/home/tuxuser/smahub/.venv/bin/python3" "cargo" "rustc" "--features" "pyo3/extension-module" "--message-format" "json-render-diagnostics" "--manifest-path" "/tmp/pip-install-yv27vd23/pydantic-core_97a51659f32d4ded9974e443032fc882/Cargo.toml" "--release" "--lib" "--crate-type" "cdylib"`
  Rust not found, installing into a temporary directory
  Error: command ['maturin', 'pep517', 'build-wheel', '-i', '/home/tuxuser/smahub/.venv/bin/python3', '--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 pydantic-core
`

How can I solve this issue?

[AnotherDaniel]

Hm... can you check again with the current codebase? I made a change to the Dockerfile to address a Rust toolchain being-old error.

What distro are you running on your Pi?

[Rincewind76]

I just did a complete new install in a virtual machine - using debian 13.
The problem remains, I still get the error, that the configured Python interpreter version (3.13) is newer than PyO3's maximum supported version (3.12)

Unfortunately I have no clue, where to set the maximum version to check if there are breaking changes in the newer version.