On reflection though, the timestamp dependant part isn't really something used much nowadays apart from compiling C.
It'd be cool if it was an opt-in feature for just files so that it could actually function as a replacement for make in all cases.
I went looking in the docs and found this[0] which I'd missed last time I looked into justfiles.
[0] https://github.com/casey/just?tab=readme-ov-file#what-are-th...