Install Cython alpha and disable build isolation under free-threaded

packaging/pep517_backend/_backend.py

@@ -374,10 +374,10 @@ def get_requires_for_build_wheel(
 
     if is_pure_python_build:
         c_ext_build_deps = []
-    elif sysconfig.get_config_var("Py_GIL_DISABLED"):
-        c_ext_build_deps = ['Cython == 3.1.0a1']
+    elif sysconfig.get_config_var('Py_GIL_DISABLED'):
+        c_ext_build_deps = ['Cython ~= 3.1.0a1']
     else:
-        c_ext_build_deps = ['Cython ~= 3.0.0']
+        c_ext_build_deps = ['Cython ~= 3.0.11']
 
     return _setuptools_get_requires_for_build_wheel(
         config_settings=config_settings,

pyproject.toml

@@ -79,6 +79,12 @@ test-command = 'pytest -v -m "not hypothesis" --no-cov {project}/tests'
 # don't build PyPy wheels, install from source instead
 skip = "pp*"
 
+# TODO: Remove this when there's a Cython 3.1 final release
+# Remove PIP_CONSTRAINT from the environment
+[[tool.cibuildwheel.overrides]]
+select = "cp313t-*"
+environment = {COLOR="yes", FORCE_COLOR="1", MYPY_FORCE_COLOR="1", PRE_COMMIT_COLOR="always", PY_COLORS="1"}
+
 [tool.cibuildwheel.environment]
 COLOR = "yes"
 FORCE_COLOR = "1"

requirements/cython.txt

@@ -1,2 +1 @@
-cython==3.1.0a1; python_version >= '3.13'
-cython==3.0.11; python_version <= '3.12'
+cython~=3.0.11

tests/test_quoting_benchmarks.py

@@ -4,8 +4,9 @@
 
 try:
     from pytest_codspeed import BenchmarkFixture
+    CODSPEED_MISSING = False
 except ImportError:
-    BenchmarkFixture = None
+    CODSPEED_MISSING = True
 
 from yarl._quoting import _Quoter, _Unquoter
 
@@ -21,7 +22,7 @@
 
 
 @pytest.mark.skipif(
-    BenchmarkFixture is None, reason="pytest-codspeed needs to be installed"
+    CODSPEED_MISSING, reason="pytest-codspeed needs to be installed"
 )
 def test_quote_query_string(benchmark: BenchmarkFixture) -> None:
     @benchmark
@@ -31,7 +32,7 @@ def _run() -> None:
 
 
 @pytest.mark.skipif(
-    BenchmarkFixture is None, reason="pytest-codspeed needs to be installed"
+    CODSPEED_MISSING, reason="pytest-codspeed needs to be installed"
 )
 def test_quoter_ascii(benchmark: BenchmarkFixture) -> None:
     @benchmark
@@ -41,7 +42,7 @@ def _run() -> None:
 
 
 @pytest.mark.skipif(
-    BenchmarkFixture is None, reason="pytest-codspeed needs to be installed"
+    CODSPEED_MISSING, reason="pytest-codspeed needs to be installed"
 )
 def test_quote_long_path(benchmark: BenchmarkFixture) -> None:
     @benchmark
@@ -51,7 +52,7 @@ def _run() -> None:
 
 
 @pytest.mark.skipif(
-    BenchmarkFixture is None, reason="pytest-codspeed needs to be installed"
+    CODSPEED_MISSING, reason="pytest-codspeed needs to be installed"
 )
 def test_quoter_pct(benchmark: BenchmarkFixture) -> None:
     @benchmark
@@ -61,7 +62,7 @@ def _run() -> None:
 
 
 @pytest.mark.skipif(
-    BenchmarkFixture is None, reason="pytest-codspeed needs to be installed"
+    CODSPEED_MISSING, reason="pytest-codspeed needs to be installed"
 )
 def test_long_query(benchmark: BenchmarkFixture) -> None:
     @benchmark
@@ -71,7 +72,7 @@ def _run() -> None:
 
 
 @pytest.mark.skipif(
-    BenchmarkFixture is None, reason="pytest-codspeed needs to be installed"
+    CODSPEED_MISSING, reason="pytest-codspeed needs to be installed"
 )
 def test_long_query_with_pct(benchmark: BenchmarkFixture) -> None:
     @benchmark
@@ -81,7 +82,7 @@ def _run() -> None:
 
 
 @pytest.mark.skipif(
-    BenchmarkFixture is None, reason="pytest-codspeed needs to be installed"
+    CODSPEED_MISSING, reason="pytest-codspeed needs to be installed"
 )
 def test_quoter_quote_utf8(benchmark: BenchmarkFixture) -> None:
     @benchmark
@@ -91,7 +92,7 @@ def _run() -> None:
 
 
 @pytest.mark.skipif(
-    BenchmarkFixture is None, reason="pytest-codspeed needs to be installed"
+    CODSPEED_MISSING, reason="pytest-codspeed needs to be installed"
 )
 def test_unquoter_short(benchmark: BenchmarkFixture) -> None:
     @benchmark
@@ -101,7 +102,7 @@ def _run() -> None:
 
 
 @pytest.mark.skipif(
-    BenchmarkFixture is None, reason="pytest-codspeed needs to be installed"
+    CODSPEED_MISSING, reason="pytest-codspeed needs to be installed"
 )
 def test_unquoter_long_ascii(benchmark: BenchmarkFixture) -> None:
     @benchmark
@@ -111,7 +112,7 @@ def _run() -> None:
 
 
 @pytest.mark.skipif(
-    BenchmarkFixture is None, reason="pytest-codspeed needs to be installed"
+    CODSPEED_MISSING, reason="pytest-codspeed needs to be installed"
 )
 def test_unquoter_long_pct(benchmark: BenchmarkFixture) -> None:
     @benchmark