What use case is that? I looked over the README, including the parts where it claims to do things Make can't (I don't agree with much of it). I remain unconvinced that it supports use cases Make can't.
It's not that Make can't work as a task launcher, it's that it's not designed as such.
The simple fact that a build target isn't executed if the build file already exists, requiring a workaround to run it, points to the difference in purpose and philosophy. Those little details, together with the more modern design, accumulate to make Just a tool that is simpler to use for that purpose.
