I tried downgrading Leo to 6.0, but it still failed with the same error. Then I downgraded PyQt5 to 5.15.1. I then downgraded PyQtWebEngine - but spelled all lowercase - also to 5.15.1 and then Leo 6.0 worked. Then I upgraded Leo to 6.3 and that worked too.
So we can get it working, but there is an error somewhere in the pip instruction files. On Friday, March 12, 2021 at 4:22:38 PM UTC-5 [email protected] wrote: > Viktor Ransmayr schrieb am Freitag, 12. März 2021 um 22:09:20 UTC+1: > >> Am Fr., 12. März 2021 um 19:19 Uhr schrieb [email protected] < >> [email protected]>: >> >>> I just installed a Debian VM. After installing Leo with pip I got >>> exactly the same error message as you. I don't know what to do with it, >>> though. >>> >>> On Friday, March 12, 2021 at 12:29:34 PM UTC-5 [email protected] >>> wrote: >>> >>>> [email protected] schrieb am Freitag, 12. März 2021 um 15:44:31 UTC+1: >>>> >>>>> I can't help directly with Debian, but Leo works fine on my VMs >>>>> running both Mint and Ubuntu, which are both Debian-based. I would have >>>>> thought that they use Debian packages directly, but maybe that's not so. >>>>> >>>>> ... >>>> >>>> >>>>> >>>>> The *PyQt5-Qt5* package that is listed in your list output is >>>>> something I have not seen before. >>>>> >>>>> From the error message you got, >>>>> >>>>> This application failed to start because no Qt platform plugin could >>>>> be initialized. >>>>> >>>>> I wonder if you are running one window manager but the installer >>>>> package gave you the setup for a different window manager. If so, maybe >>>>> you can temporarily switch window managers and see if that works. >>>>> >>>> >>>> I've not changed / switched the windows manager used in the Debian 10 >>>> VM at all! >>>> >>>> But you are obviously correct, that the doubly 'PyQt5' as well as >>>> 'PyQtWebEngine' packages are very strange. >>>> >>>> I'll continue work on it later in the day - and - get back as soon as >>>> I've an explanation - or - at least some news ... >>>> >>> >> I have some news - but - no explanation ;-) >> >> I tried to install Leo from PyPI via Pip - into the same PyVE - starting >> from version 6.0 - and - all of them (i.e. also the latest stable version >> 6.3) install - and - WORK properly !!! >> >> AFAIKT this problem only occurs, if you try to install Leo from scratch >> w/o having any existing 'package dependency history' ... >> > > These are the PyQt related packages which (for whatever reason) work: > > PyQt5 5.12.3 > PyQt5-Qt5 5.15.2 > PyQt5-sip 12.8.1 > PyQtWebEngine 5.12.1 > PyQtWebEngine-Qt5 5.15.2 > > As I said: I have news - but - no real explanation yet ... > > With kind regards, > > Viktor > > -- You received this message because you are subscribed to the Google Groups "leo-editor" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/leo-editor/a42e3e69-3a8f-4638-a2f8-d648a8416d69n%40googlegroups.com.
