I tried adding the following before the rootfs partition in the kickstart file.

> 
> part swap --use-label --size 2G --label swap1 --fstype=swap --fsoptions=sw

and also tried updating https://github.com/ilbers/isar/blob/2c76d889035ea05114b1a31bb73b025c0247a278/scripts/lib/wic/plugins/imager/direct.py#L105 to allow swap to be added to the fstab. CRYPT_PARTITIONS has been updated to
> 
> 
> CRYPT_PARTITIONS = "swap1:swap:reencrypt platform:/:reencrypt"

also tried
> 
> CRYPT_PARTITIONS = "swap1::reencrypt platform:/:reencrypt"

The image booted into initramfs and based on the debug log it says
> 
> Begin: Encryption of /dev/sda2 ... cannot resize partition. unsupport
> fstype: swap

Regards,
John