The other confusing aspect of this is that my old schematic did list the dependent libraries. So why the *.pro file was key to which libraries were being used is perhaps a legacy curiosity.
EESchema Schematic File Version 2 LIBS:mylib LIBS:ttl_ieee LIBS:power LIBS:device LIBS:conn LIBS:linear LIBS:regul LIBS:74xx LIBS:cmos4000 LIBS:adc-dac LIBS:memory LIBS:xilinx LIBS:special LIBS:microcontrollers LIBS:microchip LIBS:analog_switches LIBS:motorola LIBS:intel LIBS:audio LIBS:interface LIBS:digital-audio LIBS:philips LIBS:display LIBS:cypress LIBS:siliconi LIBS:contrib LIBS:localports-cache _______________________________________________ Mailing list: https://launchpad.net/~kicad-developers Post to : kicad-developers@lists.launchpad.net Unsubscribe : https://launchpad.net/~kicad-developers More help : https://help.launchpad.net/ListHelp