Declare build deps in pyproject.toml

[mkoeppe]

No description provided.

[oscarbenjamin]

Thanks. I had been thinking about doing this for a while but I wasn't sure about all implications given that setup.py uses distutils rather than setuptools (for Python < 3.12). I guess it is fine to call the backend setuptools in any case.

This should fix pip install for the special case that compilers and flint are already installed but a python-flint wheel is not available and should mean that --no-build-isolation is not needed any more.

There is also discussion about pyproject.toml in gh-52. Another thing that would be good to move to pyproject.toml would be all the cibuildwheel config which is currently duplicated in CI config/scripts:

python-flint/.github/workflows/buildwheel.yml

Lines 36 to 53 in e5da576

	env:
	CIBW_BUILD: cp39-* cp310-* cp311-* cp312-*
	CIBW_SKIP: "*-win32 *-manylinux_i686 *-musllinux_*"
	CIBW_MANYLINUX_X86_64_IMAGE: manylinux2014
	CIBW_MANYLINUX_I686_IMAGE: manylinux2014
	CIBW_BEFORE_ALL_LINUX: bin/cibw_before_all_linux.sh
	CIBW_BEFORE_ALL_MACOS: bin/cibw_before_all_macosx_x86_64.sh
	CIBW_BEFORE_ALL_WINDOWS: msys2 -c bin/cibw_before_all_windows.sh
	CIBW_BEFORE_BUILD_WINDOWS: msys2 -c bin/cibw_before_build_windows.sh
	CIBW_BEFORE_BUILD: pip install numpy setuptools cython delvewheel
	CIBW_ENVIRONMENT: >
	C_INCLUDE_PATH=$(pwd)/.local/include/
	LIBRARY_PATH=$(pwd)/.local/lib/
	LD_LIBRARY_PATH=$(pwd)/.local/lib:$LD_LIBRARY_PATH
	PYTHON_FLINT_MINGW64=true
	CIBW_REPAIR_WHEEL_COMMAND_WINDOWS: >-
	bin\cibw_repair_wheel_command_windows.bat {dest_dir} {wheel}
	CIBW_TEST_COMMAND: python -c "import flint; print(str(flint.fmpz(2)))"

python-flint/bin/cibw.sh

Lines 12 to 36 in e5da576

	export CIBW_ENVIRONMENT='C_INCLUDE_PATH=$(pwd)/.local/include/ LIBRARY_PATH=$(pwd)/.local/lib/ LD_LIBRARY_PATH=$(pwd)/.local/lib:$LD_LIBRARY_PATH PYTHON_FLINT_MINGW64=true'
	export CIBW_BUILD='cp39-* cp310-* cp311-* cp312-*'
	# export CIBW_BUILD='cp311-*'
	export CIBW_SKIP='*-win32 *-manylinux_i686 *-musllinux_*'
	# export CIBW_ARCHS_MACOS="x86_64"
	export CIBW_ARCHS_MACOS="arm64"
	export CIBW_BEFORE_ALL_LINUX=bin/cibw_before_all_linux.sh
	# export CIBW_BEFORE_ALL_MACOS=bin/cibw_before_all_macosx_x86_64.sh
	export CIBW_BEFORE_ALL_MACOS=bin/cibw_before_all_macosx_arm64.sh
	export CIBW_BEFORE_ALL_WINDOWS='C:\\msys64\\usr\\bin\\bash bin/cibw_before_all_windows.sh'
	export CIBW_BEFORE_BUILD='pip install numpy cython delvewheel'
	export CIBW_BEFORE_BUILD_WINDOWS='C:\\msys64\\usr\\bin\\bash bin/cibw_before_build_windows.sh'
	export CIBW_REPAIR_WHEEL_COMMAND_WINDOWS='bin\cibw_repair_wheel_command_windows.bat {dest_dir} {wheel}'
	# export CIBW_TEST_COMMAND="python -c 'import flint; print(str(flint.fmpz(2)))'"
	export CIBW_TEST_COMMAND="python -m flint.test"
	# cibuildwheel --platform linux
	# cibuildwheel --platform windows
	cibuildwheel --platform macos

[oscarbenjamin]

Thanks Matthias

[mkoeppe]

--no-build-isolation is not needed any more

#111 updates the README accordingly