problem installing Leo on Linux

[Geoff Evans]

I'm using Leo happily on different computers and operating systems, but when I try to install on a new Linux computer I run into trouble.

I started by installing Anaconda (version current as of the week before last) as Edward suggests, and then followed instructions on the leoeditor.com web site.  I first tried "pip install leo", and then downloaded the source code and tried to run "python pathname/launchLeo.py" and got the same error messages both times:

cannot import name 'QtWebKit' from 'PyQt5'

additional error:

...

from PyQt5 import QtWebEngineCore as QtWebKit

PyCapsule_GetPointer called with an incorrect name

Can anyone help?  (1) What did I do wrong?  (2) How can I fix it?  (3) How should I have been able to use the documentation to find out for myself?

Thanks,   geoff evans

[vitalije]

Most probably it is the PyQt5 version that is newer than Leo expects.

Try executing the following line in the terminal.

python -c "from PyQt5 import Qt;print(Qt.qVersion())"

And report here what is the output you get.

I remember having to install an older version of PyQt5 in order to make Leo work.

Vitalije

[Geoff Evans]

Thanks Vitalje

I get:

5.13.0

[Matt Wilkie]

PyQt v5.13.0 should work, it does for sure on Windows. Is PyQtWebEngine installed? Try `pip show PyQtWebEngine`. If not then try `pip install PyQtWebEngine`.

It's supposed to be installed automatically but adding it as a distinct package was a change added recently and it hasn't been widely tested.

-matt

[Geoff Evans]

That worked!  Leo starts nicely now.

Many thanks Matt and Vitalije.

geoff

[Matt Wilkie]

 you're welcome geoff, and welcome aboard too :)