=> Bootstrap dependency digest>=20010302: found digest-20190127
ERROR: This package is only available for these platforms: NetBSD-*.*-x86_64.
ERROR: This package has set PKG_SKIP_REASON:
ERROR: xenkernel413-4.13.2nb4 is not available for NetBSD-9.0-sparc64
*** Error code 1

Stop.
make: stopped in /usr/pkgsrc/sysutils/xenkernel413