[Issue 24584] [phobos] `make unittest` should not rerun tests unnecessarily

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=24584

--- Comment #4 from Nick Treleaven <nick at geany.org> ---
(In reply to kinke from comment #2)
> ```
> $ make -j$(nproc) std/algorithm/mutation.test # single module
> $ make -j$(nproc) std/algorithm.test # whole package
> $ make -j$(nproc) unittest/std/algorithm/mutation.run # single module
> ```

Pull to update Makefile comment:
https://github.com/dlang/phobos/pull/9014

--