I recently received a Steam Deck and I love it!
I also planning to use it for development. On my PC I get used to Fish shell and usually use it instead of Bash. I can install it on Steam Deck and set it to the default shell, but after a system update it will be wiped. I can create a script and run it after each update, will I be able to login if my user points to /usr/bin/fish that doesn’t exist in the system?..
you might have to do https://wiki.archlinux.org/title/Command-line_shell#Changing_your_default_shell after every update. Maybe put it in a shell script and make .bashrc execute it, so that it switches your default to fish, after it has been reset to bash. This script could also be used to reinstall fish after the update.