Problem installing PyQt6 via PyPI

[Phil Thompson]

On 05/01/2021 11:29, Detlev Offenbach wrote:
> Am 05.01.21 um 11:33 schrieb Phil Thompson:
>> On 05/01/2021 10:18, Detlev Offenbach wrote:
>>> Hello Phil,
>>> 
>>> trying to install PyQt6 via "pip install PyQt6" results in an error.
>>> The command downloads the .tar.gz file and tries to build the wheel
>>> from there, which fails. Trying to install the downloaded wheel fails
>>> as well.
>>> 
>>> ./pyqt6env/bin/python3 -m pip install
>>> ~/Downloads/Python/PyQt/PyQt6/PyQt6-6.0.0-6.0.0-cp36.cp37.cp38.cp39-abi3-manylinux_2_28_x86_64.whl 
>>> ERROR:
>>> PyQt6-6.0.0-6.0.0-cp36.cp37.cp38.cp39-abi3-manylinux_2_28_x86_64.whl
>>> is not a supported wheel on this platform.
>>> 
>>> The test was done on Kubuntu 20.10 with Python 3.9
>> 
>> Do you have an up to date version of pip?
> 
> That was the issue. Per default pip v20.1.1 was installed into the
> virtual environment (created via "python3.9 -m venv pyqt6env"). After
> your hint I upgraded pip (it is now v20.3.3) and PyQt6 installed fine.
> 
> Should the wheel contain a dependency on the recent version of pip?

No because what the out-of-date version did was correct, ie. try to 
build from source. The underlying "bug" with pip is the poor error 
reporting when it failed to build from source.

Phil