If you try to install Viber on Debian 9 you will probably get the following error:
dpkg: dependency problems prevent configuration of viber:
viber depends on libssl1.0.0; however:
Package libssl1.0.0 is not installed.
This is cause because libssl1.0.0 is not installed be default and is no longer available through the repos.
Install Xdebug:
sudo apt install php-xdebug;
Add the following to /etc/php/7.0/mods-available/xdebug.ini:
xdebug.profiler_enable_trigger = 1
xdebug.profiler_enable = 0
xdebug.remote_enable = 1
xdebug.profiler_output_dir = "/tmp"
Restart Apache:
sudo service apache2 restart;
Well that was a little bit tricky.
If you think that you will find this option in the
"Settings -> Keyboard"
or
"Settings -> Region & Language"
you are wrong...
Instead try "Tweak Tool -> Typing -> Switching to another layout".
Those Gnome guys are incomprehensible some times :-)
A mini tutorial on this kind of setup, since Debian 8 currently comes with Python3.4.
In order to manage to compile and install pip3.5 along with the Python3.5, from source, you must install some other stuff first. For pip3.5 specifically, you need libssl-dev.
Overall, you need to install all the following packages.
sudo apt-get install -y make build-essential libssl-dev zlib1g-dev libbz2-dev libreadline-dev libsqlite3-dev wget curl llvm libncurses5-dev libncursesw5-dev;