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)

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)

• 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

Sourced from siliconcompiler's releases.

v0.34.1

SiliconCompiler 0.34.1 (2025-07-07)

Major:

• Removed support for Python 3.8.
• Changed node names from {step}{index} to {step}/{index} [Ciprian167].

Minor:

• Ensure only tool outputs are forwarded for skipped nodes.
• Tools:
  • openroad: limit default max displacement for detailed placement optimizations.
  • opensta: added support to gracefully handle empty input files.
  • surfer: added support for surfer for waveform viewing [infinitymdm].
  • vpr: added support to generate timing analysis files.

Sourced from siliconcompiler's changelog.

SiliconCompiler 0.34.1 (2025-07-07)

Major:

• Removed support for Python 3.8.
• Changed node names from {step}{index} to {step}/{index} [Ciprian167].

Minor:

• Ensure only tool outputs are forwarded for skipped nodes.

• Tools:

• openroad: limit default max displacement for detailed placement optimizations.

• opensta: added support to gracefully handle empty input files.

• surfer: added support for surfer for waveform viewing [infinitymdm].

• vpr: added support to generate timing analysis files.

SiliconCompiler 0.34.0 (2025-06-16)

Major:

• Added .find_files and .check_filespaths functionality to BaseSchema.
• Added functionality to BaseSchema to allow reverse traversal of the schema.
• Removed support for paths containing environmental variables.

Minor:

• Added a values only mode to getdict to only return the values in the schema.
• Changes the log color in the commandline dashboard to white for better visibility.

SiliconCompiler 0.33.2 (2025-06-03)

Minor:

• Fixed bug in git submodule checkouts that left the incorrect version of the submodules checked out.

• Updated replay script to provide access to replay python scripts.

• Fixed bug in remote client that caused errors when running with hashing turned on.

• Updated [record,starttime] and [record,endtime] to include microseconds.

• Tools:

• slang: updated to version 8.1.

... (truncated)

• efd2e64 Merge pull request #3785 from siliconcompiler/version0.34.1
• fe8fe74 version 0.34.1
• c7dab77 Merge pull request #3784 from siliconcompiler/rm-logger-fields
• 496b54a Merge pull request #3783 from siliconcompiler/rm-logger-formats
• ea143c4 remove custom field from logger and track separately
• e1d5429 fix unsed imports
• 5614d1d fix cli dashboard test and provide _console type in testing
• 067138e remove calls to reinitialize the logger outside the chip object
• 7cd49e7 remove calls to _init_logger_formats in favor of just copying the formatter
• c3b2ab3 Merge pull request #3782 from siliconcompiler/dependabot/pip/python-packages-...
• Additional commits viewable in compare view

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