BoxBackup for 19.07.7

Hi, just trying to use BoxBackup on 19.07.7 and find that package is missing.

info here: https://openwrt.org/docs/guide-user/services/boxbackup

There is any way to install it for use it?, how?

Found more info here: https://github.com/openwrt/packages/pull/5119 and here https://github.com/boxbackup/boxbackup/issues/35

So it seems that sadly stopped the build's just because of a deprecated build tool...

Do anyone know if there is a way to do some effort to have it available again?