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GeezerVison is showing github.com — Add Python 3.15 to CI and fix test issues by honglei · Pull Request #758 · MagicStack/uvloop

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@honglei

@honglei honglei commented Aug 24, 2026 •
edited by fantix
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  • Fixed epoll test cleanup on Python 3.15 by @honglei
  • Added Python 3.15 and free-threaded variant to test and release CI matrix
  • Fixed 2 flakinesses in tests
Issue Resolution
pyOpenSSL 25.3 doesn't support Python 3.15t Bump to pyOpenSSL 26.4 for python>3.8
cibuildwheel 3.2 doesn't support Python 3.15 Bump to 4.2 for python>3.8
cryptography 50.0.1 lacks wheels for Python 3.15t and Intel macOS Install OpenSSL 3 and other build dependencies to compile cryptography from source
Universal2 build settings unnecessarily make test dependencies target both architectures Build test dependencies for arm64 only and test Intel wheels separately

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@honglei
Fix epoll test cleanup on Python 3.15
e51959b
@honglei honglei mentioned this pull request Aug 24, 2026
Add Python 3.15 and 3.15t CI and wheels MagicStack/asyncpg#1352
Closed
@vlad-scherbich vlad-scherbich mentioned this pull request Sep 1, 2026
[3.15] uvloop — gate unblocked via sdist; waiting on cp315 wheel DataDog/dd-trace-py#19998
Open
1 task
fantix added 2 commits September 29, 2026 12:15
@fantix
Add Python 3.15 and free-threaded builds to test matrix
bd69a06
@fantix
Fix races in thread checks and subprocess tests
b9cdded
Serialize foreign-thread scheduling calls with the running loop in test_check_thread to avoid corrupting libuv state on free-threaded Python. Wait for the subprocess protocol connection_lost callback before asserting pipe shutdown stages.
@fantix

fantix commented Sep 29, 2026

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Thank you for the PR! I added 3.15 in the CI matrix and fixed some more racing/flaky tests in freethread interpreters.

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@fantix
fantix marked this pull request as ready for review September 29, 2026 19:09
@fantix fantix changed the title Fix epoll test cleanup on Python 3.15 Add Python 3.15 and 3.15t CI and release wheel builds Sep 30, 2026
@fantix fantix changed the title Add Python 3.15 and 3.15t CI and release wheel builds Add Python 3.15 to CI and fix test issues Sep 30, 2026
@fantix
Add Python 3.15 and 3.15t release wheel builds
a7b2ba7
Use cibuildwheel 4.2 for Python 3.9+ while retaining 3.2 for Python 3.8. Pair runners with architectures explicitly, testing macOS x86_64 wheels on Intel and universal2 wheels on arm64.

Install native OpenSSL and Linux container dependencies for wheel tests, use native build flags for universal2 test dependencies, and pass the GitHub CI marker into Linux containers.
@fantix
fantix force-pushed the fix-python315-epoll-test branch from 69b8dbc to a7b2ba7 Compare September 30, 2026 14:58
fantix
fantix approved these changes Sep 30, 2026
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@fantix
fantix merged commit f7c0547 into MagicStack:master Sep 30, 2026
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@fantix fantix mentioned this pull request Sep 30, 2026
uvloop 0.23.0 #768
Merged
@nsoranzo nsoranzo mentioned this pull request Oct 1, 2026
Python 3.15 support galaxyproject/galaxy#23375
Open
29 of 43 tasks
jensbjorgensen pushed a commit to jensbjorgensen/uvloop that referenced this pull request Oct 6, 2026
@fantix
uvloop 0.23.0
c5f7deb
Changes
=======

* Add Python 3.15 and 3.15t wheel builds and CI coverage (MagicStack#758)
  (by @honglei @fantix in f7c0547)

* Add support for the `eager_start` keyword argument in create_task() (MagicStack#748)
  (by @samypr100 in 3cbb095 for MagicStack#746 MagicStack#718)

* Add thread name prefix to the default thread pool executor (MagicStack#636)
  (by @inikolaev @fantix in 0582f94 for MagicStack#562)

* Add support for special hostname `<broadcast>` (MagicStack#592)
  (by @jpbede in 3060ceb for MagicStack#540)

* Upgrade libuv to v1.52.1 (MagicStack#753)
  (by @fantix in e8efea4 for MagicStack#752)

* Improve performance by using Python C API to enter/exit context (MagicStack#627)
  (by @tarasko in 837ef22)

* Improve performance/latency of Transport.write (MagicStack#619)
  (by @tarasko in 1d9b6e0)

* Replace some SSL vectorcall with direct methods (MagicStack#626)
  (by @tarasko in 6a27cbe)

* Optimize SSL buffered reads using C values (MagicStack#629)
  (by @tarasko in a308f75)

Fixes
=====

* Detach socket on create_connection cancellation to prevent fd double-close (MagicStack#740)
  (by @junjzhang @fantix in dc680eb for MagicStack#645 MagicStack#738)

* Remove `loop._ready_len` in favor of `len(loop._ready)` (MagicStack#721)
  (by @x42005e1f in 5910a18 for MagicStack#720)

* Prefer inspect.iscoroutinefunction (MagicStack#705)
  (by @MatthieuDartiailh in fd65027 for MagicStack#703)

* Fix context tests by explicitly yielding after run_in_executor (MagicStack#743)
  (by @samypr100 in 6cd24cb)

* Fix test_create_connection_open_con_addr with Python 3.13.9+ (MagicStack#713)
  (by @shadchin in b93141a for MagicStack#701)

* Skip flaky test_cancel_post_init on asyncio 3.13+ (MagicStack#714)
  (by @fantix in 3ea5c85 for MagicStack#709)

* Fix flaky test_fs_event (MagicStack#717)
  (by @fantix in 8da4547)

* Use C __atomic builtins for debug counters (MagicStack#719)
  (by @fantix in 836e3b2)

* Update the example to work with Python 3.14 (MagicStack#710)
  (by @Jamie-Chang in b74c2f1)

Build
=====

* Replace pkg_resources with packaging and use Cython 3.1 (MagicStack#742)
  (by @samypr100 in b377b7c for MagicStack#729)

* Remove wheel as a build dependency (MagicStack#696)
  (by @DimitriPapadopoulos in 173e88c)

* Support any number of flags in UVLOOP_OPT_CFLAGS (MagicStack#630)
  (by @mgorny in 963a5f3)
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@fantix fantix fantix approved these changes

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@honglei @fantix
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