chore: move to scikit-build-core

[henryiii]

Trying out scikit-build-core.

This should also fix the missing py.typed and _version.pyi files from the current wheels.

See list of improved features at https://github.com/scikit-build/scikit-build-core:

• Better warnings, errors, and logging
• No warning about unused variables
• Automatically adds Ninja and/or CMake only as required
• No dependency on setuptools, distutils, or wheel
• Powerful config system, including config options support
• Automatic inclusion of site-packages in CMAKE_PREFIX_PATH
• FindPython is backported if running on CMake < 3.26.1 (configurable), supports
  PyPY SOABI & Limited API / Stable ABI
• Limited API / Stable ABI and pythonless tags supported via config option
• No slow generator search, ninja/make or MSVC used by default, respects
  CMAKE_GENERATOR
• SDists are reproducible by default (UNIX, Python 3.9+)
• Support for caching between builds (opt-in by setting build-dir)
• Support for writing out to extra wheel folders (scripts, headers, data)
• Dedicated entrypoints for module and prefix directories
• Several integrated dynamic metadata plugins (proposing standardized support
  soon)
• Experimental editable mode support, with optional experimental auto rebuilds
  on import
• Supports WebAssembly (Emscripten/Pyodide).

The following limitations are present compared to classic scikit-build:

• The minimum supported CMake is 3.15
• The minimum supported Python is 3.7

[henryiii]

Do you compile a CPython extension, actually? Is they any difference between a cp37 wheel and a cp311 wheel? If not, scikit-build-core supports native production of single pythonless wheels. It also supports expanding all macOS tags from universal.

[kratsg]

Do you compile a CPython extension, actually? Is they any difference between a cp37 wheel and a cp311 wheel? If not, scikit-build-core supports native production of single pythonless wheels. It also supports expanding all macOS tags from universal.

no, there's definitely no CPython (or python-binding) going on here. This is basically, cross-compile the files for each platform and ship the so.

[henryiii]

FYI, don't make a release quite yet, I need to fix the license file location in scikit-build-core 0.4.0. 0.4.1 should fix that.

[henryiii]

scikit-build-core 0.4.1 is out, everything should be fine again. :)