CI: clean up wheel build workarounds now that Cython 3.1.0 is out (pandas-dev#61446)

Author: rgommers

.github/workflows/wheels.yml

@@ -101,11 +101,6 @@ jobs:
         - [windows-2022, win_amd64]
         # TODO: support PyPy?
         python: [["cp310", "3.10"], ["cp311", "3.11"], ["cp312", "3.12"], ["cp313", "3.13"], ["cp313t", "3.13"]]
-        include:
-        # TODO: Remove this plus installing build deps in cibw_before_build.sh
-        # after pandas can be built with a released NumPy/Cython
-        - python: ["cp313t", "3.13"]
-          cibw_build_frontend: 'pip; args: --no-build-isolation'
         # TODO: Build free-threaded wheels for Windows
         exclude:
         - buildplat: [windows-2022, win_amd64]

pyproject.toml

@@ -161,11 +161,11 @@ test-command = """
   pd.test(extra_args=["-m not clipboard and not single_cpu and not slow and not network and not db", "-n 2", "--no-strict-data-files"]); \
   pd.test(extra_args=["-m not clipboard and single_cpu and not slow and not network and not db", "--no-strict-data-files"]);' \
   """
-free-threaded-support = true
+enable = ["cpython-freethreading"]
 before-build = "PACKAGE_DIR={package} bash {package}/scripts/cibw_before_build.sh"
 
 [tool.cibuildwheel.windows]
-before-build = "pip install delvewheel && bash {package}/scripts/cibw_before_build.sh"
+before-build = "pip install delvewheel"
 repair-wheel-command = "delvewheel repair -w {dest_dir} {wheel}"
 
 [[tool.cibuildwheel.overrides]]

scripts/cibw_before_build.sh

@@ -2,13 +2,3 @@
 for file in $PACKAGE_DIR/LICENSES/*; do
   cat $file >> $PACKAGE_DIR/LICENSE
 done
-
-# TODO: Delete when there's a PyPI Cython release that supports free-threaded Python 3.13.
-FREE_THREADED_BUILD="$(python -c"import sysconfig; print(bool(sysconfig.get_config_var('Py_GIL_DISABLED')))")"
-if [[ $FREE_THREADED_BUILD == "True"  ]]; then
-    python -m pip install -U pip
-    # python -m pip install -i https://pypi.anaconda.org/scientific-python-nightly-wheels/simple cython
-    # TODO: Remove below and uncomment above once https://github.com/cython/cython/pull/6717 no longer breaks tests
-    python -m pip install git+https://github.com/cython/cython.git@3276b588720a053c78488e5de788605950f4b136
-    python -m pip install ninja meson-python versioneer[toml] numpy
-fi