LAUNCH-PROGRAM: ECL 20.4.24 no longer requires streams to be files or synonyms
ECL CHANGELOG Entry: https://gitlab.com/embeddable-common-lisp/ecl/-/blob/20.4.24/CHANGELOG#L103
ECL CHANGELOG Entry: https://gitlab.com/embeddable-common-lisp/ecl/-/blob/20.4.24/CHANGELOG#L103