Wine 1.7 not installing on Xubuntu 15.10

The dependency it fails on is libgphoto2-port10, which isn't Wily. You can try manually installing the DEB files from Trusty:

http://packages.ubuntu.com/trusty/libgphoto2-port10

The needed packages are currently not available for Wily. Check this filtered page.

Wait some days and the Wily packages are likely to be available. In the meantime, install the Vivid packages:

wget http://mirrors.kernel.org/ubuntu/pool/main/libg/libgphoto2/libgphoto2-port10_2.5.4-1.1ubuntu1_i386.deb
wget http://mirrors.kernel.org/ubuntu/pool/main/libg/libgphoto2/libgphoto2-port10_2.5.4-1.1ubuntu1_amd64.deb
sudo dpkg -i libgphoto2-port10*.deb
sudo apt-get install -f
sudo apt-get install wine1.7

You still can use PlayOnLinux on (X)Ubuntu 15.10.

With PlayOnLinux you create (and safe remove) 'virtual drives' (in /home/{user}/.PlayOnLinux/wineprefix/ ) with different Wine versions and different settings.

It's in 15.10 repository:

sudo apt-get install playonlinux

In the program: Menu -> Tools -> Manage Wine Versions

You can install Wine versions (x86 or x64) you need, including 1.7 (latest 1.7.54), and then use in 'virtual drives'.

Programs from PlayOnLinux 'virtual drives' you can run like this:

/usr/share/playonlinux/playonlinux --run "Evernote.5.8.13"

And, of course, you can add .desktop entry in /home/{user}/.local/share/applications/

Imho, it's more convenient than pure Wine anyway.