Installing 'ubuntu-desktop-next' makes the system (kernel in fact) unbootable.

[Daniel van Vugt]

'apt-get install ubuntu-desktop-next' bricks any Ubuntu (wily) deskop installation...

$ sudo apt-get install ubuntu-desktop-next
...
Processing triggers for initramfs-tools (0.120ubuntu3) ...
update-initramfs: Generating /boot/initrd.img-4.1.0-3-generic
Setting up ubuntu-core-upgrader (0.7.13) ...
Setting up ubuntu-snappy (1.5ubuntu1) ...
Job for ubuntu-snappy.boot-ok.service failed because the control process exited with error code. See "systemctl status ubuntu-snappy.boot-ok.service" and "journalctl -xe" for details.
ubuntu-snappy.boot-ok.service couldn't start.
Job for ubuntu-snappy.run-hooks.service failed because the control process exited with error code. See "systemctl status ubuntu-snappy.run-hooks.service" and "journalctl -xe" for details.
ubuntu-snappy.run-hooks.service couldn't start.
...

$ sudo reboot

--> System never boots again. You need to reinstall from USB.

[Daniel van Vugt (vanvugt)]

The command you actually want instead is:

  sudo apt-get install unity8-desktop-session-mir

:)

[Stephen M. Webb (bregma)]

The desktop seeds should be removed from this project if they're not being supported, and the desktop-next binaries should be removed from the archive. They're too tempting.

[Will Cooke (willcooke)]

Ubuntu-desktop-next binary has been removed from Ubuntu.