libinput-dev binary package in Ubuntu Focal amd64

 libinput is a library that handles input devices for display servers and
 other applications that need to directly deal with input devices.
 .
 It provides device detection, device handling, input device event
 processing and abstraction to minimize the amount of custom input
 code the user of libinput needs to provide the common set of
 functionality that users expect.
 .
 This package includes the development headers.

Source package