- Migrate to Xenial
- Use whitelisted PPA instead of hardcoded deb URL
- Only add X11 dependencies for X11 builds
- Only set sudo on matrix entries
(cherry picked from commit ff7d42a55e)
This allows compositors which prefer to draw the decorations around
clients to do so, rather than letting GLFW draw its own decorations.
The appearance is thus entirely subject to the compositor used, but
should generally be better than the current solid colour decorations we
have, which we continue to use when the compositor doesn’t support this
protocol or tells us to draw the decorations ourselves.
This new protocol has been tested against wlroots’s rootston compositor.
Fixes#1257.
By setting dist explicitly to trusty, which has cmake >= 2.8.12 in their
official package repository and installing newly non-default packages
explicitly.
Closes#1015.
