Error when Installing Ethereum Package ethereum has no installation candidate

Question

I am installing Ethereum on Ubuntu 17.10 following the steps.

But when executing the following command:

sudo apt-get install ethereum

I get the following:

Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package ethereum is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'ethereum' has no installation candidate

Answer 1

It seems that there is a compatibility issue with the last stable version of Ethereum and Ubuntu 17.10; and the latest unstable version could be installed with no issues:

sudo apt-get install ethereum-unstable

However, this means that in the next stable version of Ethereum there will be no issues.