...only when running under minimal/do, of course.
The tests in question mostly fail because they're testing particular
dependency-related behaviour, and minimal/do doesn't support dependencies,
so naturally it doesn't work.
If a and b both depend on c, and c is a static (non-generated) file that has
changed since the last successful build of a and b, we would try to redo
a, but would forget to redo b. Now it does both.
