BUILD: Bump Cython to 3.1

asv_bench/asv.conf.json

@@ -42,7 +42,7 @@
     // followed by the pip installed packages).
     "matrix": {
         "pip+build": [],
-        "Cython": ["3.0"],
+        "Cython": [],
         "matplotlib": [],
         "sqlalchemy": [],
         "scipy": [],

ci/deps/actions-310-minimum_versions.yaml

@@ -8,7 +8,7 @@ dependencies:
 
   # build dependencies
   - versioneer
-  - cython>=0.29.33
+  - cython<4.0.0a0
   - meson=1.2.1
   - meson-python=0.13.1
 

ci/deps/actions-310.yaml

@@ -6,7 +6,7 @@ dependencies:
 
   # build dependencies
   - versioneer
-  - cython>=0.29.33
+  - cython<4.0.0a0
   - meson=1.2.1
   - meson-python=0.13.1
 

ci/deps/actions-311-downstream_compat.yaml

@@ -7,7 +7,7 @@ dependencies:
 
   # build dependencies
   - versioneer
-  - cython>=0.29.33
+  - cython<4.0.0a0
   - meson=1.2.1
   - meson-python=0.13.1
 

ci/deps/actions-311-numpydev.yaml

@@ -8,7 +8,7 @@ dependencies:
   - versioneer
   - meson=1.2.1
   - meson-python=0.13.1
-  - cython>=0.29.33
+  - cython<4.0.0a0
 
   # test dependencies
   - pytest>=7.3.2

ci/deps/actions-311-pyarrownightly.yaml

@@ -7,7 +7,7 @@ dependencies:
   # build dependencies
   - versioneer
   - meson=1.2.1
-  - cython>=0.29.33
+  - cython<4.0.0a0
   - meson-python=0.13.1
 
   # test dependencies

ci/deps/actions-311.yaml

@@ -6,7 +6,7 @@ dependencies:
 
   # build dependencies
   - versioneer
-  - cython>=0.29.33
+  - cython<4.0.0a0
   - meson=1.2.1
   - meson-python=0.13.1
 

ci/deps/actions-312.yaml

@@ -6,7 +6,7 @@ dependencies:
 
   # build dependencies
   - versioneer
-  - cython>=0.29.33
+  - cython<4.0.0a0
   - meson=1.2.1
   - meson-python=0.13.1
 

ci/deps/actions-313-freethreading.yaml

@@ -7,6 +7,7 @@ dependencies:
   # build dependencies
   - setuptools
   - versioneer
+  - cython<4.0.0a0
   - meson=1.8.0
   - meson-python=0.18.0
 
@@ -21,10 +22,8 @@ dependencies:
   # optional dependencies
   - hypothesis>=6.84.0
 
-  # Move Cython to build dependencies, once they release a version that supports freethreading
   - pip:
     # No free-threaded coveragepy (with the C-extension) on conda-forge yet
     - pytest-cov
     - "tzdata>=2022.7"
     - "--extra-index-url https://pypi.anaconda.org/scientific-python-nightly-wheels/simple"
-    - "cython"

ci/deps/actions-313.yaml

@@ -6,7 +6,7 @@ dependencies:
 
   # build dependencies
   - versioneer
-  - cython>=0.29.33
+  - cython<4.0.0a0
   - meson=1.2.1
   - meson-python=0.13.1
 

ci/deps/actions-pypy-39.yaml

@@ -9,7 +9,7 @@ dependencies:
 
   # build dependencies
   - versioneer
-  - cython>=0.29.33
+  - cython<4.0.0a0
   - meson=1.2.1
   - meson-python=0.13.1
 

environment.yml

@@ -8,7 +8,7 @@ dependencies:
 
   # build dependencies
   - versioneer
-  - cython~=3.0.5
+  - cython<4.0.0a0
   - meson=1.2.1
   - meson-python=0.13.1
 

pyproject.toml

@@ -5,7 +5,7 @@ requires = [
     "meson-python>=0.13.1",
     "meson>=1.2.1,<2",
     "wheel",
-    "Cython==3.1.0rc1",  # Note: sync with setup.py, environment.yml and asv.conf.json
+    "Cython<4.0.0a0",  # Note: sync with setup.py, environment.yml and asv.conf.json
     # Force numpy higher than 2.0rc1, so that built wheels are compatible
     # with both numpy 1 and 2
     "numpy>=2.0.0rc1",

requirements-dev.txt

@@ -3,7 +3,7 @@
 
 pip
 versioneer[toml]
-cython~=3.0.5
+cython<4.0.0a0
 meson[ninja]==1.2.1
 meson-python==0.13.1
 pytest>=7.3.2