* gnu/installer/newt/partition.scm (run-fs-type-page): Add ‘xfs’ to the
list box.
* gnu/installer/parted.scm (user-fs-type-name, user-fs-type->mount-type)
(partition-filesystem-user-type): Add ‘xfs’ mapping.
(create-xfs-file-system): New procedure.
(format-user-partitions): Use it.
* gnu/installer.scm (set-installer-path): Add xfsprogs.