I have to write python code next week wich generates objects. I’ve never done that in python, so thanks for giving me a good starting point. :)

Always a pleasure to help :) Yeah took me a while to get it right to, but fortunately there are many guides to secure it properly.

ssh is so amazing. With X11 forwarding you can start graphical apps aswell, so via ssh you can run everything you would on your host but via lan or the internet. I used it to edit documents directly in libreoffice on my host and I have an app on my smartphone wich emulates a mouse.

Ssh is always enabled

That depends on the distribution. In archlinux the server is disabled by default. If I remember correctly some distributions distinguished between the client and the service package, which arch doesn’t, so it could be standart to enable it if you install the server.

Also usually I can access the tty but sometimes a reinstall is easier than figuring out how to fix it.

Yes, true and most of the times it’s quicker to reinstall. It’s especially annoying if you haven’t used your system in a while and have no idea what you did last.

Snapshots is sth I still should setup.

The gentoo wiki has a super detailed guide about porting your system to btrfs: https://wiki.gentoo.org/wiki/Btrfs/System_Root_Guide

No, it’s the printed linux from scratch documentation. :P https://linuxfromscratch.org/

What helped me minimize my reinstalls was enabling ssh on my PC. If my UI goes pear shaped I can go through the logs on my phone or my laptop. I can also recommend COW-filesystems liks btrfs or zfs for snapshots and rollbacks.

I just did some more research and aparently my intel was a bit outdatet (from arount 2020). The guide should still work, though booting from SSD should be working by default and does not require any eeprom-updates. So you can probably start with step 4.

Raspberry Pi4? Then yes, here’s a guide to update your bootloader:

https://www.raspberrystreet.com/learn/how-to-boot-raspberrypi-from-usb-ssd

For older models(Pi<4), no but kinda: Afaik oder models could only boot from SD-cards. But that only means the bootloader has to be on the SD-card. So you can copy everything but the bootpartition and change the entry in the /etc/fstab to the new root on the SSD.