i have the calamares installer working quite well on my fork for the parabola mate/x86_64 configuration

https://notabug.org/bill-auger/calamares/src/parabola

it is configured so that the package cache in the ISO image is used when installing into the new chroot system - the advantage of this approach is that parabola can now be installed directly and completely from ISO without the network just as with most other liveCDs but in the idiomatic chrooted "arch-way" rather than exploding the live SFS - even the bare-bones CLI system can be installed from this same ROM media without a network connection but o/c the fresh packages will be downloaded transparently when the network is present - this can be further extended to allow users to select other system/desktop configurations such as KDE, gnome, LXDE, tiling WMs, additional software suites, and so on when a network connection is present - or the packages could be distributed on separate ISOs either as static software-packs like debian or as additional self-contained live installers