X.Org X server -- joystick input driver (development headers)

X.Org X server -- libinput input driver (development headers)

Synaptics TouchPad driver for X.Org server (development headers)

multi-dimensional arrays with broadcasting (transition package)

basic tools (containers, algorithms) used for xtensor and xeus

development files for zathura plugins

compression library - development

shell with lots of features (development files)