[PyQt] pip vs apt-get install

[Florian Bruhin]

Hey,

* scalet at yebu.de <scalet at yebu.de> [2016-05-03 15:25:39 +0200]:
> Ubuntu:
> Normally when installing new python modules, I go that road:
> When I find it in the apt repository (standard) and I do not
> have a very urgent reason to have a bleeding edge version)
> I will use this. If not, I do a pip3 install. If not even
> available for pip ... oke, that's another story.
> 
> I feel this way, I get the most stable system.

I think the most important rule is: Never use pip (or any package
manager other than your system's) as root (e.g. with sudo).

There is a very real chance you'll mess up your system otherwise, as
various things depend on libraries being installed in exactly the
version they are, etc. I see people who broke their systems that way
in #python (the IRC channel) regularily.

I usually install PyQt system-wide (because it's just easier), then
create a virtualenv[1], symlink the systemwide installation there[2]
and then use pip inside the virtualenv.

[1] https://pypi.python.org/pypi/virtualenv
[2] https://github.com/The-Compiler/qutebrowser/blob/master/scripts/link_pyqt.py

An alternative to doing that is pip install --user which installs
packages to e.g. ~/.local/lib/python3.4/site-packages/.

Florian

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