setup-alpine exits sys install because missing packages
setup-alpine exits with an unsatisfiable constraint error when trying to do a sys setup:
e2fsprogs (missing):
required by: world[e2fsprogs]
sfdisk (missing):
required by: world[sfdisk]
syslinux (missing):
required by: world[syslinux]
seems like the setup for this iso was not tested with the sys option.
(from redmine: issue id 5975, created on 2016-07-27)