Since this thread discussed possibly bringing back Cygwin buildfarm coverage, you might be interested in this proposed change:
https://www.postgresql.org/message-id/flat/CA%2BhUKG%2BBpW%3DKhGHTWGMe0cSETMYZsSygv5jFWD1Y6wcbAn2ecQ%40mail.gmail.com#dad6afc6b54306c6f2a47f7a31f0bb24
