All HOWTOs I found how to install scribus 1.5 are only for Ubuntu 14.04 or 15.04, but on 14.10 I cannot find the package scribus-trunk in the ppa:
sudo add-apt-repository ppa:scribus/ppa
sudo apt-get update
sudo apt-get install scribus-trunk
How do I install scribus-trunk on Ubuntu 14.10?