textual-web can't be installed while depending on Python 3.12 (macOS)

[davep]

It appears that textual-web can't currently be installed when Python 3.12 will be the environment's Python (at least on macOS, Python installed via pyenv).

Using pipx, for example, I get the following error:

Fatal error from pip prevented installation. Full pip output in file:
    /Users/davep/.local/pipx/logs/cmd_2023-11-06_08.18.46_pip_errors.log

pip failed to build packages:
    aiohttp
    uvloop

Some possibly relevant errors from pip install:
    fatal error: too many errors emitted, stopping now [-ferror-limit=]

Error installing textual-web.

An example log:

cmd_2023-11-06_08.12.43_pip_errors.log

If I force Python 3.11:

$ pyenv global 3.11
$ pipx install --force --python (which python) textual-web

(using fish above, use appropriate substitution syntax for your shell of choice) it installs just fine.

[TomJGooding]

It looks like Python 3.12 is only supported in the aiohttp beta currently.

[TomJGooding]

It looks like Python 3.12 is only supported in the aiohttp beta currently.

aiohttp v3.9 has just been released. It looks like uvloop added Python 3.12 support in v0.18.

[4b11b4]

Also running into this issue, but only for uvloop
Uploading cmd_2023-11-21_08.04.31_pip_errors.log…

[jco-c]

Same issue for Windows 10 on python 3.12. Some package used by textual-web depends on multidict and frozenlist (maybe also aiohttp?), which both don't have wheels for Windows yet.
PRs for both of them exist already though:
aio-libs/frozenlist#553
aio-libs/multidict#877

[ssteinerx]

3.12.1 on Ubuntu 23.10, pipx fails with:

pip failed to build package:
    uvloop

But, in a 3.12.1 virtualenv?

$ pip install uvloop
Collecting uvloop
  Downloading uvloop-0.19.0-cp312-cp312-manylinux_2_17_x86_64.manylinux2014_x86_64.whl.metadata (4.9 kB)
Downloading uvloop-0.19.0-cp312-cp312-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (4.2 MB)
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 4.2/4.2 MB 15.9 MB/s eta 0:00:00
Installing collected packages: uvloop
Successfully installed uvloop-0.19.0

Go figure.

[va7wv]

Same issue here. Unuseable on Fedora 41 in a venv. Seems like this project is dead now.

Fails at:

Building wheels for collected packages: uvloop
  Building wheel for uvloop (pyproject.toml) ... /

[notdaniel]

This is purely due to the pinned version of uvloop, which apparently caused build problems for people even at that time, and was fixed in this commit: MagicStack/uvloop#604

I forked the repo, updated the packages (including and especially uvloop) and that solved the problem. That commmit is here: notdaniel/textual-web@96371e7 and if anyone wants to try it, you can install it with pipx/pip/whatever directly from git: pipx install git+https://github.com/notdaniel/textual-web.git@fix-failing-uvloop

I could open a PR for this, but I'm not sure 1) if this project is still being maintained, or 2) if pinning all the packages to new versions broke anything non-obvious or just isn't desired for compatibility reasons.

@va7wv I am on Fedora 41 as well, so when I found this comment, I assumed it was a Fedora issue, but not the case! uvloop v0.19 also did not build on my Mac. So just a coincidence :)