$ sudo apt install libpcscada-dev
[sudo] password for brian:
Solving dependencies... Error!
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

Unsatisfied dependencies:
 libpcscada-dev : Depends: gnat-14-ade93c16 but it is not installable
                  Depends: libpcscada0.7.7 (= 0.7.7-10+b1) but it is not going
to be installed
                  Depends: libpcsclite-dev but it is not going to be installed
Error: Unable to satisfy dependencies. Reached two conflicting assignments:
   1. libpcscada-dev:amd64=0.7.7-10+b1 is selected for install
   2. libpcscada-dev:amd64 Depends gnat-14-ade93c16
      but none of the choices are installable:
      [no choices]