def realTime: F[FiniteDuration] only provides millisecond precision

[dhpiggott]

I'm debugging an issue with a tracing library which works with cats.effect.kernel.Clock.realTime: F[FiniteDuration]. In services which use this tracing library and Cats Effect, traces have nanosecond accuracy. In the service I'm working on, which uses ZIO and interop-cats, I'm only getting millisecond accuracy, and I've tracked it to this:

interop-cats/zio-interop-cats/shared/src/main/scala/zio/interop/cats.scala

Line 559 in bf24db5

currentTime(MILLISECONDS).map(FiniteDuration(_, MILLISECONDS))

Could it be changed to provide nanosecond precision?