---------------------------------Original-Message---------------------------------
Date: Sun, 31 Dec 2017 02:13:49
From: Andre Joost <andre+joost-xv0xcborcazkyx7dzd8...@public.gmane.org>
To: qgis-user-qjldd68f18nyqmayxoh...@public.gmane.org
Newsgroups: gmane.comp.gis.qgis.user
Subject: Re: sip-api-11.2 and qtbase-abi-5-5-1 prevent installing qgis 2.99
    nightly on kde neon / ubuntu 16.04

Am 31.12.2017 um 02:19 schrieb Jason Paul Joines:

#

         I also have a newer version of python-sip, which is supposed to
provide sip-api-11.2:

# dpkg -l python-sip
Desired=Unknown/Install/Remove/Purge/Hold
|

Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend

|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name                                               Version
Architecture                   Description

+++-==================================================-==============================-==============================-=========================================================================================================

ii  python-sip 4.19.2+dfsg-1+16.04+xenial+bui
amd64                          Python/C++ bindings generator runtime
library

I guess the newer version spoils your installation. My Xenial installation is build against python-sip 4.17 from the main ubuntu repo, and works fine.

It might be that python-sip 4.19.2 includes a different version of sip-api, which is of no use for you.

Try to downgrade python-sip, and libqt5core5a as well, which comes as 5.5.1 from the main repo for me.

If KDE Neon does not provide it, try to force the main ubuntu repo version.

HTH,
Andre Joost


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I did downgrade python-sip to version 4.17+dfsg-1build1 from the main Ubuntu repositories. I still get the same error at qgis install about sip-api-11.2 having no installation candidate.

Downgrading libqt5core5a would require downgrading my entire desktop. I'm not willing to do that.

Perhaps I could rebuild both libqt5core5a and python-sip so that they will both claim to provide the missing virtual packages even in their current versions.


Jason
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