error: Distribution kaleido==0.2.1.post1 @ registry+https://pypi.org/simple can't be installed because it doesn't have a source distribution or wheel for the current platform

[jamesdeluk]

New to uv, sorry if PEBKAC.

I'm trying to install pycaret (uv add pycaret) to a new project on Windows, Python 3.11.

Get this error:

error: Distribution `kaleido==0.2.1.post1 @ registry+https://pypi.org/simple` can't be installed because it doesn't have a source distribution or wheel for the current platform

The repo (https://pypi.org/simple/kaleido/) has:

kaleido-0.2.1-py2.py3-none-win_amd64.whl
kaleido-0.2.1.post1-py2.py3-none-manylinux2014_armv7l.whl

So, no kaleido-0.2.1.post1 for Windows.

Checking the PyPi website, there is https://pypi.org/project/kaleido/0.2.1.post1/

pip install kaleido==0.2.1.post1

Although that applies to the manylinux version.

Yet using conda, it works fine; it installs:

Downloading kaleido-0.2.1-py2.py3-none-win_amd64.whl (65.9 MB)

Is there a way for uv to use the compatible version like conda does?

[konstin]

The problem is that kaleido 0.2.1 and 0.2.1.post1 are technically different versions, and the latter has only a kaleido-0.2.1.post1-py2.py3-none-manylinux2014_armv7l.whl (and due to universal resolution, uv doesn't know which wheels it will need eventually). Setting required platforms is planned in #10067, currently you can try something like

[tool.uv]
environments = [
	"platform_system != "Windows",
	"platform_system == "Windows"
]

or banning 0.2.1.post1 in a constraint.