Bootstrap openSUSE systems for faster and more customisable installations.
Currently openSUSE Tumbleweed and Leap 15.3 are supported. The supported architecture is x86_64.

openSUSE Tumbleweed, in this case, is geared towards desktop usage.
openSUSE Leap 15.3 is supported as a very minimal install, to be built upon, similar to bare-bones Arch Linux installs.

This tool requires a working installation of zypper. openSUSE and SLE systems naturally come with it preinstalled.

Packages are available for: Debian, Ubuntu, Arch Linux, Fedora

If you're not using one of the aforementioned distributions, it may be available on your distro's repos, or you can always build it yourself.

Create your partitions, mount your install filesystems, clone this repository, then run:

bash tumbleweed.sh <target_directory> <target_hostname>
or
bash tinyleap.sh <target_directory> <target_hostname>

Where these values are:

target_directory: The directory where the new system will be installed into.
target_hostname: Hostname for the new system.

After the system is installed, you may mount (/sys /dev /dev/pts /proc), chroot into it, install GRUB or another bootloader, edit /etc/fstab, /etc/vconsole.conf and /etc/locale.conf, set /etc/localtime to something more fitting, and it's business as usual, all the sweet Linux-from-inside-out stuff we know and love.

Installing systems from the inside-out is quick and practical for advanced users.
Plus, you get a lot of system customisability ahead of time.
We should be able to specify which packages should be downloaded, and which ones should be locked out (avoided altogether).
This isn't a new idea: Arch (pacstrap), Gentoo (tarballs) and Debian (via debootstrap) have been doing this for a long time, among other systems.
zypper is just so neat, it's the only required tool for openSUSE, this script is just some bare-bones automation.