Poetry install fails due to incompatible Python range

[Manezki]

Installing the project from a fresh clone fails with Poetry.

Error log

❯ poetry install
Updating dependencies
Resolving dependencies... (0.1s)

The current project's supported Python range (>=3.8) is not compatible with some of the required packages Python requirement:
  - misaki requires Python <3.13,>=3.8, so it will not be installable for Python >=3.13

Because no versions of misaki match >0.9.4
 and misaki[en] (0.9.4) requires Python <3.13,>=3.8, misaki is forbidden.
So, because kittentts depends on misaki[en] (>=0.9.4), version solving failed.

  * Check your dependencies Python requirement: The Python requirement can be specified via the `python` or `markers` properties

    For misaki, a possible solution would be to set the `python` property to ">=3.8,<3.13"

    https://python-poetry.org/docs/dependency-specification/#python-restricted-dependencies,
    https://python-poetry.org/docs/dependency-specification/#using-environment-markers

Steps to reproduce

1. git clone https://github.com/KittenML/KittenTTS.git
2. cd KittenTTS
3. poetry env use python 3.12
4. poetry install

Environment

• Python version: 3.12.3
• Poetry version: 2.1.3

Workaround

• Change requires-python in pyproject.toml requires-python = ">=3.8" -> requires-python = ">=3.8,<3.13"
• poetry install

[akx]

Misaki actually isn't even required by the repo other than for some side effects (see #25).

[kore619]

Force Poetry to use Python 3.12 -- using cmd -- poetry env use python3.12 -- check it using -- poetry env info --

reinstall dependencies cleanly --
poetry lock --no-update

and
poetry install