* ci: fix cuda issue

* ci: cuda 11.3-11.4 produce warnings -> errors

* tests: ignore unused warning for MSVC

* Update tests/CMakeLists.txt

* Fix py::cast from pytype rvalue to pytype

Previously, py::cast blindly assumed that the destination type was a C++
type rather than a python type when the source type was an rvalue.

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* change iostream include to ostream include

* Add frozenset, and allow it cast to std::set

For the reverse direction, std::set still casts to set. This is in concordance with the behavior for sequence containers, where e.g. tuple casts to std::vector but std::vector casts to list.

Extracted from #3886.

* Rename set_base to any_set to match Python C API

since this will be part of pybind11 public API

* PR: static_cast, anyset

* Add tests for frozenset

and rename anyset methods

* Remove frozenset default ctor, add tests

Making frozenset non-default constructible means that we need to adjust pyobject_caster to not require that its value is default constructible, by initializing value to a nil handle.  This also allows writing C++ functions taking anyset, and is arguably a performance improvement, since there is no need to allocate an object that will just be replaced by load.

Add some more tests, including anyset::empty, anyset::size, set::add and set::clear.

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* Add rationale to `pyobject_caster` default ctor

* Remove ineffectual protected: access control

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- [github.com/hadialqattan/pycln: v1.3.1 → v1.3.2](https://github.com/hadialqattan/pycln/compare/v1.3.1...v1.3.2)
- [github.com/PyCQA/pylint: v2.13.5 → v2.13.8](https://github.com/PyCQA/pylint/compare/v2.13.5...v2.13.8)
- [github.com/pre-commit/mirrors-mypy: v0.942 → v0.950](https://github.com/pre-commit/mirrors-mypy/compare/v0.942...v0.950)

* Update PGI workflow

* Remove copy paste typo

* ci: fix debian image

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* Test pickling a simple callable (does not work).

Currently only documents that it does not work. Starting point for future fix.

* Use re.search to accommodate variations of the TypeError message.

* PyPy: exercise full dumps/loads cycle.

* Adding explicit "broken" comment.

Replace error printing code gated by NDEBUG with a new flag: PYBIND11_DETAILED_ERROR_MESSAGES  (#3913)

* Update cast.h

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* Move definition to detail/common, change name, apply everywhere

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* Rename debug_enabled in tests to detailed_error_messages_enabled

We already test that tuple can cast to std::vector and std::deque; add tests for std::vector<bool>, std::list and
std::valarray.

Extracted from #3886.

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* ci: dependabot major versions for official actions

* style: use extend-select for flake8

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* Change numpy from_args call signature to avoid copy

* Reorder ctors

* Rename arg

* Fix unnecessary move

* Fix clang-tidy and Add a few missing moves to memory_view pytype

* Enable clang-tidy check modernize-use-nullptr

* Sort clang-tidy

* Sorted again

* Simplify numpy dtype ctor

* Simplify c_str ctor

* Remove compat macro for str in numpy

* Added deleted copy constructor for error_scope to comply with rule of 3.

* Added constructor based on typenum, based on PyArray_DescrFromType

Added accessors for typenum, alignment, byteorder and flags fields of
PyArray_Descr struct.

* Added tests for new py::dtype constructor, and for accessors

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* Fixed the comment for alignment method

* Update include/pybind11/numpy.h

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* Adds set_name method of pybind11::capsule class

This calls PyCapsule_SetName on the underlying capsule object.

modified destructors to query capsules's Name

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Handle possible exception thrown by PyCapsule_GetName

Also removed accidentally reintroduced use of `const char *&`.

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Fixed function name

* Introduced private static function to reuse get_name_or_throw

* added tests for capsule renaming

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* handle python error in flight

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* Initialized PyObject * variables to nullptr

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* get_name_or_throw->get_name_no_throw

If PyCapsule_GetName raises an error we should write as unraisable
to consume it and notify user, and then restore the error in flight if any.
This way this method called from destructor would not modify interpreter
error state.

* used error_scope struct

* Renamed get_name_no_throw->get_name_in_error_scope

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updates:
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- [github.com/asottile/pyupgrade: v2.31.1 → v2.32.0](https://github.com/asottile/pyupgrade/compare/v2.31.1...v2.32.0)
- [github.com/PyCQA/pylint: v2.13.4 → v2.13.5](https://github.com/PyCQA/pylint/compare/v2.13.4...v2.13.5

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* ci: drop dead windows CI jobs

* chore: touch up pre-commit

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* Update configure.yml

* Update configure.yml

* Cleanup cast_safe<void> specialization

Replace explicit specialization of cast_safe<void> with SFINAE.
It's better for SFINAE cases to cover all type-sets rather than mixing SFINAE and explicit specialization.

Extracted from #3674

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* Update cast.h

Use detail::none_of<> as suggested

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* Update cast.h

Reorder:
If TEMP_REF
If VOID
if (!VOID && !TEMP_REF)

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* Make stl_bind take slice as const_ref

* Change eval order if

* Silence MSVC warning

* Make slice constructor consistent

* Add more missing std::move for ref steals

* Add missing perfect forwarding for arg_v ctor

* Add missing move in arg_v constructor

* Revert "Add missing move in arg_v constructor"

This reverts commit 126fc7c524ea7a51b54720defd75de3470d69557.

* Add another missing move in cast.h

* Optimize object move ctor

* Don't do useless move

* Make move ctor same as nb

* Make obj move ctor same as nb

* Revert changes which break MSVC

updates:
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* feature: support compilers that use std::experimental::filesystem such as gcc7

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* only use this feature if cpp17

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* more specific namespace alias + style

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* move to pybind11 namespace

* no namespace alias

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* chore: bump changelog for 2.9.2

Signed-off-by: Henry Schreiner <henryschreineriii@gmail.com>

* Update docs/changelog.rst