The reason for the difference between `pip3 install` and `sudo apt-get
install` of python3 packages, at least on my system, is where the
packages are stored:
`/usr/lib/python3/dist-packages` and `/usr/lib/python35/dist-packages`
respectively.
Not sure I understand why the difference, whether it can be easily
managed, or even if it is a problem. It just seemed to make a
difference.
Rather than say people have a "messy" Ubuntu system, when it isn't, this
information may be helpful as `python pip` and variants are widely used.
Using Qt5.7.1 sources to rebuilding QtCore.so and PyQt5, using a Qt5.7.1
build kit, seems more possible and I will try that when I have time. I
am in "awe" of all the work that went into providing these shared
modules but having to create new clean environments to build and use a
software applications shouldn't be necessary.
I would also like to know when QGIS plans to depart from QtWebKit to
QtWebEngine and same for Widgets. Anyone know?
Gordon
On 2017-02-17 22:21, [email protected] wrote:
Just today I made a little progress after numerous upgrades applied to
Ubuntu 17.04.
There are several issues on my "messy" Ubuntu system - and probably
not on other Linux flavours.
This error seems odd, I hadn't seem it before, is there a fix?
`[ 88%] Building CXX object
tests/src/gui/CMakeFiles/qgis_attributeformtest.dir/qrc_images.cpp.o
/home/gordon/dev/cpp/QGIS/build-master/python/gui/sip_guipart3.cpp:2929:7:
error: deleted function ‘virtual
sipQgsFileDownloader::~sipQgsFileDownloader()’
^
In file included from
/home/gordon/dev/cpp/QGIS/python/gui/qgsfiledownloader.sip:33:0:
/home/gordon/dev/cpp/QGIS/python/../src/gui/qgsfiledownloader.h:99:5:
error: overriding non-deleted function ‘virtual
QgsFileDownloader::~QgsFileDownloader()’
~QgsFileDownloader();`
The other error, I am working on, after bringing up QGIS.
`version `Qt_5.8' not found (required by
/usr/local/lib/python3.5/dist-packages/PyQt5/QtCore.so)`
I can install PyQt5.7.1 built using Qt5.7.1. Hopefully that will
work. As it will be built with Qt5.7.1.
It has made me wonder how many "cores" were used to build pre-packaged
libraries, anyone know?
Qt5.8, is not possible for me without completely rebuilding libraries
which are prebuilt with an out-of-date Unicode `libicu` version 57 and
building from source has errors due to new icu version 58 not being
picked up. I am not attempting that.
Gordon
On 2017-02-12 12:01, [email protected] wrote:
In summary, the apparent issue seems to have resulted from using `sudo
pip3 install PyQt5` at some point as the latest version of it depends
on Qt 5.7.1 while `sudo apt-get install python3-pyqt5` depends on Qt
5.6.1 and the symbolic link to `libQt5Core.so.5` points to 5.6.1.
Simply removing and purging packages and reinstalling does not easily
correct this.
The observations regarding building using Qt 5.7.1 are still valid and
don't seem to affect building using Qt 5.6.1.
Gordon
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