I have problems downloading and installing several software packages.
This is what I get every time: some broken packages.
$ sudo apt install i3
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
i3 : Depends: i3-wm (= 4.16.1-1~~xenial1) but it is not going to be installed
Recommends: i3lock (>= 2.2) but it is not going to be installed
Recommends: suckless-tools but it is not installable
Recommends: i3status (>= 2.3) but it is not going to be installed
Recommends: dunst but it is not installable
E: Unable to correct problems, you have held broken packages.
My Ubuntu version is 16.04.
As asked for, the contents of /etc/apt/sources.list.d/sur5r-i3.list:
deb https://debian.sur5r.net/i3/ xenial universe
