Use $*KERNEL instead of $*DISTRO.name to skip tests on "OS X"/"macOS".
Use $*KERNEL instead of $*DISTRO.name to skip tests on "OS X"/"macOS".

The test needs to skip on Apple's file systems.

The value of $*KERNEL is consistent across releases, whereas what
$*DISTRO.name reports has changed from "macosx" to "macos" with Apple's
rebranding.

perl6/roast