DEPS: Upgrade Deps for Python 3.10

.github/actions/build_pandas/action.yml

@@ -13,5 +13,5 @@ runs:
     - name: Build Pandas
       run: |
         python setup.py build_ext -j 2
-        python -m pip install -e . --no-build-isolation --no-use-pep517
+        python -m pip install -e . --no-build-isolation --no-use-pep517 --no-index
       shell: bash -l {0}

.github/workflows/sdist.yml

@@ -23,7 +23,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.8", "3.9"]
+        python-version: ["3.8", "3.9", "3.10"]
     concurrency:
       group: ${{github.ref}}-${{matrix.python-version}}-sdist
       cancel-in-progress: ${{github.event_name == 'pull_request'}}
@@ -54,10 +54,11 @@ jobs:
       with:
         activate-environment: pandas-sdist
         python-version: ${{ matrix.python-version }}
+        channels: conda-forge
 
     - name: Install pandas from sdist
       run: |
-        conda list
+        pip list
         python -m pip install dist/*.gz
 
     - name: Import pandas

ci/deps/actions-38-db-min.yaml

@@ -5,7 +5,7 @@ dependencies:
   - python=3.8
 
   # tools
-  - cython>=0.29.21
+  - cython>=0.29.24
   - pytest>=6.0
   - pytest-cov
   - pytest-xdist>=1.31

ci/deps/actions-38-db.yaml

@@ -5,7 +5,7 @@ dependencies:
   - python=3.8
 
   # tools
-  - cython>=0.29.21
+  - cython>=0.29.24
   - pytest>=6.0
   - pytest-xdist>=1.31
   - hypothesis>=5.5.3

ci/deps/actions-38-locale.yaml

@@ -5,7 +5,7 @@ dependencies:
   - python=3.8
 
   # tools
-  - cython>=0.29.21
+  - cython>=0.29.24
   - pytest>=6.0
   - pytest-cov
   - pytest-xdist>=1.31

ci/deps/actions-38-locale_slow.yaml

@@ -6,7 +6,7 @@ dependencies:
   - python=3.8
 
   # tools
-  - cython>=0.29.21
+  - cython>=0.29.24
   - pytest>=6.0
   - pytest-cov
   - pytest-xdist>=1.31

ci/deps/actions-38-minimum_versions.yaml

@@ -5,7 +5,7 @@ dependencies:
   - python=3.8.0
 
   # tools
-  - cython=0.29.21
+  - cython=0.29.24
   - pytest>=6.0
   - pytest-cov
   - pytest-xdist>=1.31

ci/deps/actions-38-slow.yaml

@@ -5,7 +5,7 @@ dependencies:
   - python=3.8
 
   # tools
-  - cython>=0.29.21
+  - cython>=0.29.24
   - pytest>=6.0
   - pytest-cov
   - pytest-xdist>=1.31

ci/deps/actions-38.yaml

@@ -6,7 +6,7 @@ dependencies:
   - python=3.8
 
   # tools
-  - cython>=0.29.21
+  - cython>=0.29.24
   - pytest>=6.0
   - pytest-cov
   - pytest-xdist>=1.31

ci/deps/actions-39-numpydev.yaml

@@ -15,7 +15,7 @@ dependencies:
   - pytz
   - pip
   - pip:
-    - cython==0.29.21 # GH#34014
+    - cython==0.29.24 # GH#34014
     - "--extra-index-url https://pypi.anaconda.org/scipy-wheels-nightly/simple"
     - "--pre"
     - "numpy"

ci/deps/actions-39-slow.yaml

@@ -6,7 +6,7 @@ dependencies:
   - python=3.9
 
   # tools
-  - cython>=0.29.21
+  - cython>=0.29.24
   - pytest>=6.0
   - pytest-cov
   - pytest-xdist>=1.31

ci/deps/actions-39.yaml

@@ -5,7 +5,7 @@ dependencies:
   - python=3.9
 
   # tools
-  - cython>=0.29.21
+  - cython>=0.29.24
   - pytest>=6.0
   - pytest-cov
   - pytest-xdist>=1.31

ci/deps/azure-macos-38.yaml

@@ -32,6 +32,6 @@ dependencies:
   - xlwt
   - pip
   - pip:
-    - cython>=0.29.21
+    - cython>=0.29.24
     - pyreadstat
     - pyxlsb

ci/deps/azure-windows-38.yaml

@@ -6,7 +6,7 @@ dependencies:
   - python=3.8
 
   # tools
-  - cython>=0.29.21
+  - cython>=0.29.24
   - pytest>=6.0
   - pytest-xdist>=1.31
   - hypothesis>=5.5.3

ci/deps/azure-windows-39.yaml

@@ -6,7 +6,7 @@ dependencies:
   - python=3.9
 
   # tools
-  - cython>=0.29.21
+  - cython>=0.29.24
   - pytest>=6.0
   - pytest-xdist>=1.31
   - hypothesis>=5.5.3

ci/deps/circle-38-arm64.yaml

@@ -5,7 +5,7 @@ dependencies:
   - python=3.8
 
   # tools
-  - cython>=0.29.21
+  - cython>=0.29.24
   - pytest>=6.0
   - pytest-xdist>=1.31
   - hypothesis>=5.5.3

doc/source/whatsnew/v1.4.0.rst

@@ -281,6 +281,12 @@ Other API changes
 - :meth:`Index.get_indexer_for` no longer accepts keyword arguments (other than 'target'); in the past these would be silently ignored if the index was not unique (:issue:`42310`)
 -
 
+.. _whatsnew_140.api_breaking.build:
+
+Build
+^^^^^
+- The minimum version of Cython needed to compile pandas is now ``0.29.24`` (:issue:`43729`)
+
 .. ---------------------------------------------------------------------------
 
 .. _whatsnew_140.deprecations:

pyproject.toml

@@ -4,18 +4,8 @@
 requires = [
     "setuptools>=51.0.0",
     "wheel",
-    "Cython>=0.29.21,<3",  # Note: sync with setup.py
-    # Numpy requirements for different OS/architectures
-    # Copied from https://github.com/scipy/scipy/blob/master/pyproject.toml (which is also licensed under BSD)
-    "numpy==1.17.3; python_version=='3.7' and (platform_machine!='arm64' or platform_system!='Darwin') and platform_machine!='aarch64'",
-    "numpy==1.18.3; python_version=='3.8' and (platform_machine!='arm64' or platform_system!='Darwin') and platform_machine!='aarch64'",
-    "numpy==1.19.3; python_version>='3.9' and (platform_machine!='arm64' or platform_system!='Darwin')",
-    # Aarch64(Python 3.9 requirements are the same as AMD64)
-    "numpy==1.19.2; python_version=='3.7' and platform_machine=='aarch64'",
-    "numpy==1.19.2; python_version=='3.8' and platform_machine=='aarch64'",
-    # Darwin Arm64
-    "numpy>=1.20.0; python_version=='3.8' and platform_machine=='arm64' and platform_system=='Darwin'",
-    "numpy>=1.20.0; python_version=='3.9' and platform_machine=='arm64' and platform_system=='Darwin'"
+    "Cython>=0.29.24,<3",  # Note: sync with setup.py
+    "oldest-supported-numpy>=0.10"
 ]
 # uncomment to enable pep517 after versioneer problem is fixed.
 # https://github.com/python-versioneer/python-versioneer/issues/193

setup.cfg

@@ -21,6 +21,7 @@ classifiers =
     Programming Language :: Python :: 3 :: Only
     Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
+    Programming Language :: Python :: 3.10
     Topic :: Scientific/Engineering
 project_urls =
     Bug Tracker = https://github.com/pandas-dev/pandas/issues
@@ -30,7 +31,10 @@ project_urls =
 [options]
 packages = find:
 install_requires =
-    numpy>=1.18.5
+    numpy>=1.18.5; platform_machine!='aarch64' and platform_machine!='arm64' and python_version<'3.10'
+    numpy>=1.19.2; platform_machine=='aarch64'
+    numpy>=1.20.0; platform_machine=='arm64'
+    numpy>=1.21.0; python_version=='3.10'
     python-dateutil>=2.8.1
     pytz>=2020.1
 python_requires = >=3.8

setup.py

@@ -37,7 +37,7 @@ def is_platform_mac():
     return sys.platform == "darwin"
 
 
-min_cython_ver = "0.29.21"  # note: sync with pyproject.toml
+min_cython_ver = "0.29.24"  # note: sync with pyproject.toml
 
 try:
     from Cython import (