I receive some positive feedback and even experimentations on SRFI-269: Portable Test Definitions.
https://git.sr.ht/~abcdw/guile-ares-rs/commit/5a16f06221c072353085ded7c54744af97800714
At the same time, I want to remind that we already have a very cool and fancy SRFI-269 test runner with fixtures, schedulers, reporters, integration with Ares/Arei and even CLI:
https://git.sr.ht/~abcdw/guile-ares-rs/tree/master/item/src/guile/ares/scripts/ares-suitbl.scm
And Guile upstream patch, of course:
https://codeberg.org/guile/guile/pulls/294