Bump pybind11 from 2.13.6 to 3.0.0

[dependabot]

Bumps pybind11 from 2.13.6 to 3.0.0.

Release notes

Sourced from pybind11's releases.

Version 3.0.0 (final)

Pybind11 3.0 includes an ABI bump, the first required bump in many years on Unix (Windows has had required bumps more often). This release contains the smart-holder branch, multi-phase init and subinterpreter support, py::native_enum, an interface to warnings, typing improvements, and more. CMake now defaults to FindPython mode. Please check our upgrade guide for more info on upgrading!

Support for Python 3.14, 3.14t, GraalPy, and PyPy 3.11 has been added, while legacy support for Python 3.7, PyPy 3.8/3.9, and CMake <3.15 has been removed. Most deprecated features have been kept for this release, but anything producing a warning in 3.0 may be removed in a future 3.x version. We also now have a deprecation page.

New Features:

• The smart_holder branch has been merged, enabling py::class_<T, py::smart_holder>, which handles two-way conversion with std::unique_ptr<T> and std::shared_ptr<T> (simultaneously), disowning a Python object being passed to std::unique_ptr<T>, trampoline objects, and std::enable_shared_from_this. #5542

  • Added support for std::shared_ptr<const T> in py::init() when using py::smart_holder, complementing existing support for std::unique_ptr<const T>. #5731

  • Support const-only smart pointers. #5718

  • Eliminate cross-DSO RTTI reliance from trampoline_self_life_support functionality, smart_holder deleter detection, and other smart_holder bookkeeping. Resolves platform-specific issues on macOS related to cross-DSO dynamic_cast and typeid mismatches. #5728 (replaces #5700)

• Changed PYBIND11_MODULE macro implementation to perform multi-phase module initialization (PEP 489) behind the scenes. #5574 and avoid destruction #5688

• Support for sub-interpreters (both isolated (with separate GILs) and legacy (with a global GIL). Add the py::multiple_interpreters::per_interpreter_gil() tag (or, py::multiple_interpreters::shared_gil() for legacy interpreter support) to PYBIND11_MODULE calls (as the third parameter) to indicate that a module supports running with sub-interpreters. #5564

  • Rename macro PYBIND11_SUBINTERPRETER_SUPPORT -> PYBIND11_HAS_SUBINTERPRETER_SUPPORT to meet naming convention. #5682

  • Allow subinterpreter support to be disabled if defined to 0. This is mostly an emergency workaround, and is not exposed in CMake. #5708 and #5710

  • Modify internals pointer-to-pointer implementation to not use thread_local (better iOS support). #5709

  • Support implementations without subinterpreter support. #5732

• Changed PYBIND11_EMBEDDED_MODULE macro implementation to perform multi-phase module initialization (PEP 489) behind the scenes and to support py::mod_gil_not_used(), py::multiple_interpreters::per_interpreter_gil() and py::multiple_interpreters::shared_gil(). #5665 and consolidate code #5670

• Added API in pybind11/subinterpreter.h for embedding sub-intepreters (requires Python 3.12+). #5666

• py::native_enum was added, for conversions between Python's native (stdlib) enum types and C++ enums. #5555

  • Add class doc string to py::native_enum. #5617

  • Fix signature for functions with a native_enum in the signature. #5619

• Support py::numpy_scalar<> / py::make_scalar() for NumPy types. #5726

• A py::release_gil_before_calling_cpp_dtor option (for py::class_) was added to resolve the long-standing issue #1446. #5522

• Add dtype::normalized_num and dtype::num_of. #5429

• Add support for array_t<handle> and array_t<object>. #5427

• Added py::warnings namespace with py::warnings::warn and py::warnings::new_warning_type that provides the interface for Python warnings. #5291

• stl.h list|set|map_caster were made more user friendly: it is no longer necessary to explicitly convert Python iterables to tuple(), set(), or map() in many common situations. #4686

• The array_caster in pybind11/stl.h was enhanced to support value types that are not default-constructible. #5305

... (truncated)

Changelog

Sourced from pybind11's changelog.

Version 3.0.0 (July 10, 2025)

Pybind11 3.0 includes an ABI bump, the first required bump in many years on Unix (Windows has had required bumps more often). This release contains the smart-holder branch, multi-phase init and subinterpreter support, py::native_enum, an interface to warnings, typing improvements, and more. CMake now defaults to FindPython mode. Please check our upgrade guide for more info on upgrading!

Support for Python 3.14, 3.14t, GraalPy, and PyPy 3.11 has been added, while legacy support for Python 3.7, PyPy 3.8/3.9, and CMake <3.15 has been removed. Most deprecated features have been kept for this release, but anything producing a warning in 3.0 may be removed in a future 3.x version. We also now have a deprecation page.

New Features:

• The smart_holder branch has been merged, enabling py::class_<T, py::smart_holder>, which handles two-way conversion with std::unique_ptr<T> and std::shared_ptr<T> (simultaneously), disowning a Python object being passed to std::unique_ptr<T>, trampoline objects, and std::enable_shared_from_this. #5542

  • Added support for std::shared_ptr<const T> in py::init() when using py::smart_holder, complementing existing support for std::unique_ptr<const T>. #5731

  • Support const-only smart pointers. #5718

  • Eliminate cross-DSO RTTI reliance from trampoline_self_life_support functionality, smart_holder deleter detection, and other smart_holder bookkeeping. Resolves platform-specific issues on macOS related to cross-DSO dynamic_cast and typeid mismatches. #5728 (replaces #5700)

• Changed PYBIND11_MODULE macro implementation to perform multi-phase module initialization (PEP 489) behind the scenes. #5574 and avoid destruction #5688

• Support for sub-interpreters (both isolated (with separate GILs) and legacy (with a global GIL). Add the py::multiple_interpreters::per_interpreter_gil() tag (or, py::multiple_interpreters::shared_gil() for legacy interpreter support) to PYBIND11_MODULE calls (as the third parameter) to indicate that a module supports running with sub-interpreters. #5564

  • Rename macro PYBIND11_SUBINTERPRETER_SUPPORT -> PYBIND11_HAS_SUBINTERPRETER_SUPPORT to meet naming convention.

... (truncated)

Commits

• ed5057d chore: prepare for 3.0.0 (final) (#5746)
• 4dc4aca [skip ci] Explain: conduit feature only covers from-Python-to-C++ conversions...
• 03d8f48 docs: fix typo in multiple_interpreters (#5738)
• ea3e33e chore: prepare for 3.0.0rc4 (#5736)
• bdc56d9 chore(deps): bump urllib3 from 2.2.2 to 2.5.0 in /docs (#5735)
• cf3d1a7 feat: numpy scalars (#5726)
• c60c149 tests: handle 3.12 and 3.13 implementations and 3.14.0b3+ (#5732)
• be507b7 ci: check latest on 3.13 (#5734)
• f2c0ab8 Fix TSan warning in sub-interpreter test (#5729)
• ad9180c fix: android CMake support (#5733)
• Additional commits viewable in compare view

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Superseded by #95.