Gnome-shell has no release candidate

Question

I can't install gnome-shell on Ubuntu 17.04. What am I missing?

» sudo apt install gnome-shell                                                                                                                                              
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package gnome-shell 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 'gnome-shell' has no installation candidate

Answer 1

I fixed it by installing some missing dependencies like:

apt install gir1.2-*
apt install gjs
apt install caribou
apt install gnome-backgrounds

Answer 2

The package that you are looking for is ubuntu-gnome-desktop