Bump to greenlet 3.0rc2 and require it on Py3.11 as well as 3.12. Als…

…o, since greenlet was proven to be the source of the SystemError and not miscompilation, add the old 2014 x86_64 image back to the matrix.

.github/workflows/ci.yml

@@ -172,8 +172,8 @@ jobs:
           pip install -q -U 'cffi;platform_python_implementation=="CPython"'
           pip install -q -U 'cython>=3.0.2'
           # Use a debug version of greenlet to help catch any errors earlier.
-          CFLAGS="$CFLAGS -Og -g -UNDEBUG" pip install -v --no-binary :all: 'greenlet>=2.0.0;platform_python_implementation=="CPython" and python_version < "3.12"'
-          CFLAGS="$CFLAGS -Og -g -UNDEBUG" pip install -v --no-binary :all: 'greenlet>=3.0rc1;platform_python_implementation=="CPython" and python_version >= "3.12"'
+          CFLAGS="$CFLAGS -Og -g -UNDEBUG" pip install -v --no-binary :all: 'greenlet>=2.0.0;platform_python_implementation=="CPython" and python_version < "3.11"'
+          CFLAGS="$CFLAGS -Og -g -UNDEBUG" pip install -v --no-binary :all: 'greenlet>=3.0rc2;platform_python_implementation=="CPython" and python_version >= "3.11"'
 
       - name: Build gevent (non-Mac)
         if: ${{ ! startsWith(runner.os, 'Mac') }}
@@ -456,6 +456,7 @@ jobs:
           - manylinux_2_28_x86_64
           - musllinux_1_1_x86_64
           - musllinux_1_1_aarch64
+          - manylinux2014_x86_84
     name: ${{ matrix.image }}
     steps:
       - name: checkout

docs/changes/1985.bugfix

@@ -0,0 +1,5 @@
+Require greenlet 3.0 on Python 3.11 and Python 3.12; greenlet 3.0 is
+recommended for all platforms. This fixes a number of obscure crashes
+on all versions of Python, as well as fixing a fairly common problem
+on Python 3.11+ that could manifest as either a crash or as a
+``SystemError``.

pyproject.toml

@@ -29,8 +29,8 @@ requires = [
      # have to break the ABI again.
      # 3.0 is ABI compatible with earlier releases, so we can switch back and
      # forth between 2 and 3 without recompiling. 3.0 is required for
-     # Python 3.12
-     "greenlet >= 3.0rc1 ; platform_python_implementation == 'CPython'",
+     # Python 3.12, and it fixes some serious bugs in Python 3.11.
+     "greenlet >= 3.0rc2 ; platform_python_implementation == 'CPython'",
 ]
 
 [tool.towncrier]

setup.py

@@ -209,9 +209,9 @@
     # 2.0.0 supports everything 1.1.3 did, but breaks the ABI in a way that hopefully
     # won't break again.
     # 3.0 is ABI compatible and adds support for Python 3.12 (but right
-    # now it's alpha because of Cython, so we only require it on 3.12)
-    'greenlet >= 2.0.0 ; platform_python_implementation=="CPython" and python_version < "3.12"',
-    'greenlet >= 3.0rc1 ; platform_python_implementation=="CPython" and python_version >= "3.12"',
+    # now it's RC pending additional testing, so we only require it on 3.12)
+    'greenlet >= 2.0.0 ; platform_python_implementation=="CPython" and python_version < "3.11"',
+    'greenlet >= 3.0rc2 ; platform_python_implementation=="CPython" and python_version >= "3.11"',
 ]
 
 # Note that we don't add cffi to install_requires, it's