Fix compatibility with Python 3.14

[Kludex]

Originally opened by @medaminezghal on 2025-08-30 21:27:15 in encode/httpx

I think this line from pyproject.toml should be changed from "httpcore==1.*", to "httpcore>=1.0.8", to make sure that it doesn't give problem when import it.

The import problem has been fixed by this commit in version 1.0.8.

[Kludex]

Originally posted by @carlwgeorge on 2025-09-04T03:01:43Z

See also encode/httpx#3616

[Kludex]

Originally posted by @ilovelinux on 2025-10-08T09:42:49Z

See also:

• Incompatibility with Python 3.14 encode/httpcore#1043

[Kludex]

Originally posted by @ilovelinux on 2025-10-08T10:02:57Z

Apparently this has already been fixed. You just need to upgrade the httpcore library to v1.0.8+

See encode/httpcore#1043 (comment)

[Kludex]

Originally posted by @cclauss on 2025-10-08T10:12:30Z

Still lingers in both

• #3645
• #3664

[Kludex]

Originally posted by @cclauss on 2025-10-08T10:59:38Z

@ilovelinux `uv install python"

[Kludex]

Originally posted by @cclauss on 2025-10-08T11:09:27Z

I saw

[user@hostname tst]$ uv venv -p 3.14
Using CPython 3.14.0rc3 interpreter at: /home/user/.local/bin/python3.14

[Kludex]

Originally posted by @cclauss on 2025-10-08T12:09:59Z

• #3645

tests/test_timeouts.py

`@pytest`.mark.xfail(sys.version_info >= (3, 14), reason="Fix trio on Python >= 3.14")
async def test_write_timeout(server):