[PyQt] Can't install eric 19 in debian 9.6

[Detlev Offenbach]

Am Samstag, 12. Januar 2019, 08:19:50 CET schrieb Guðjón Guðjónsson:
> Hi
> 
> On Fri, Jan 11, 2019 at 10:57 AM Detlev Offenbach
> 
> <detlev at die-offenbachs.de> wrote:
> > it seems that QSci and Qt are not compatible. QScintilla wants Qt version
> > 5.11 but your Qt seems to be different. Maybe you have two different
> > variants/ versions of Qt installed (one via the package management and
> > one via the PyQt5 wheels).
> > 
> > Am Donnerstag, 10. Januar 2019, 23:24:59 CET schrieb Starglider Developer:
> > > I get this error:
> > > Shall 'QScintilla' be installed using pip? (Y/n) Y
> > > Requirement already satisfied: QScintilla in
> > > /usr/local/lib/python3.5/dist-packages
> > > Requirement already satisfied: PyQt5>=5.10.1 in
> > > /usr/local/lib/python3.5/dist-packages (from QScintilla)
> > > Requirement already satisfied: sip<4.20,>=4.19.4 in
> > > /usr/local/lib/python3.5/dist-packages (from PyQt5>=5.10.1->QScintilla)
> > > Sorry, please install QScintilla2 and
> > > its PyQt5/PyQt4 wrapper.
> > > Error:
> > > /usr/local/lib/python3.5/dist-packages/PyQt5/Qt/lib/libQt5Core.so.5:
> > > version `Qt_5.11' not found (required by
> > > /usr/local/lib/python3.5/dist-packages/PyQt5/Qsci.so)
> 
> I agree with Detlev.
> 
> The QScintilla version in Debian is 2.9.3. I don't know if that
> version is compatible with eric 19 but I suggest that you
> stick to the Debian packages as much as possible.
> If you want to go outside of the package system you need to remove the
> conflicting Debian packages.
> 
> You can also upgrade to Debian Unstable (I run that myself) or we
> could backport eric to stable.
> 

Another possibility would be to create a Python Virtual environment (python3 -
m venv), install the latest PyQt5 and QScintilla wheels in there and use this 
environment to install and run eric6. I am doing this myself to be able to 
test eric6 with various PyQt and Python variants (PyQt4/Py2, PyQt4/Py3 and 
PyQt5/Py3).

Hope this helps also.

Detlev
-- 
Detlev Offenbach
detlev at die-offenbachs.de