build error for python 3.14 (alpha)

[thijstriemstra]

Failed to build pydantic-core
qa: exit 1 (13.40 seconds) /home/runner/work/luma.core/luma.core> python -I -m pip install '.[qa]' pid=2954
         Compiling static_assertions v1.1.0
         Compiling cfg-if v1.0.0
         Compiling memchr v2.7.4
         Compiling pyo3-ffi v0.22.2
         Compiling pyo3-macros-backend v0.22.2
      error: failed to run custom build command for `pyo3-ffi v0.22.2`
      
      Caused by:
        process didn't exit successfully: `/tmp/pip-install-vmyi7r9j/pydantic-core_f98f83e4570a40c49a602e2d60c388c9/target/release/build/pyo3-ffi-b6cb14e247bfd858/build-script-build` (exit status: 1)
        --- stdout
        cargo:rustc-check-cfg=cfg(Py_LIMITED_API)
        cargo:rustc-check-cfg=cfg(PyPy)
        cargo:rustc-check-cfg=cfg(GraalPy)
        cargo:rustc-check-cfg=cfg(py_sys_config, values("Py_DEBUG", "Py_REF_DEBUG", "Py_TRACE_REFS", "COUNT_ALLOCS"))
        cargo:rustc-check-cfg=cfg(invalid_from_utf8_lint)
        cargo:rustc-check-cfg=cfg(pyo3_disable_reference_pool)
        cargo:rustc-check-cfg=cfg(pyo3_leak_on_drop_without_reference_pool)
        cargo:rustc-check-cfg=cfg(diagnostic_namespace)
        cargo:rustc-check-cfg=cfg(c_str_lit)
        cargo:rustc-check-cfg=cfg(Py_3_7)
        cargo:rustc-check-cfg=cfg(Py_3_8)
        cargo:rustc-check-cfg=cfg(Py_3_9)
        cargo:rustc-check-cfg=cfg(Py_3_10)
        cargo:rustc-check-cfg=cfg(Py_3_11)
        cargo:rustc-check-cfg=cfg(Py_3_12)
        cargo:rustc-check-cfg=cfg(Py_3_13)
        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 (3.14) is newer than PyO3's maximum supported version (3.13)
        = help: please check if an updated version of PyO3 is available. Current version: 0.22.2
        = 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_ENVIRONMENT_SIGNATURE="cpython-3.14-64bit" PYO3_PYTHON="/home/runner/work/luma.core/luma.core/.tox/qa/bin/python" PYTHON_SYS_EXECUTABLE="/home/runner/work/luma.core/luma.core/.tox/qa/bin/python" "cargo" "rustc" "--features" "pyo3/extension-module" "--message-format" "json-render-diagnostics" "--manifest-path" "/tmp/pip-install-vmyi7r9j/pydantic-core_f98f83e4570a40c49a602e2d60c388c9/Cargo.toml" "--release" "--lib" "--crate-type" "cdylib"`
      Error: command ['maturin', 'pep517', 'build-wheel', '-i', '/home/runner/work/luma.core/luma.core/.tox/qa/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 pydantic-core
ERROR: ERROR: Failed to build installable wheels for some pyproject.toml based projects (pydantic-core)

[zx80]

I got this one as well. It seems releated to testing (qa) dependencies, PyO3 (Rust bindings for python). I reported it there.