Cannot build live ISO (settings/packages.hello is missing)

[PreyK]

Describe the bug
Trying to build an ISO as documented in https://hellosystem.github.io/docs/developer/building.html#id1
Looks like settings/packages.hello is missing.

After
git clone https://github.com/helloSystem/ISO
cd ISO
sudo ./build.sh hello
I get
releases
realpath: missing operand
Try 'realpath --help' for more information.
/settings/packages.hello is missing, exiting
To Reproduce
Steps to reproduce the behavior:

1. Follow the instructions on https://hellosystem.github.io/docs/developer/building.html#id1
2. See error

Expected behavior
The resulting Live ISO will be located at /usr/local/furybsd/iso/.

Screenshots

Version (please complete the following information):

• Version: N/A (Solus linux 4.2)

Computer (please complete the following information):

• Device: ASUS Rog Strix Scar III

Additional context
Cannot boot the experimental ISO-s in the releases (not sure if it's a bug or just damaged ISO as per https://hellosystem.github.io/docs/developer/boot.html#troubleshooting-the-live-system-early-boot-process).
Can boot the old 0.4.0 but wanted to check out helloSystem/hello#164 and newer stuff
If I could boot a freshly built known good ISO I could verify and maybe submit bug reports if acceptable.

[probonopd]

You need to run this on FreeBSD, not on Linux.