Ghostty, the cute and fast terminal, is integrated in the official Ubuntu repositories for only a few weeks, but I've been using it for 3 months on my work laptop (running Ubuntu 25.10) and I love it.
So I wanted to launch it via the default Ctrl-Alt-T command on the GNOME desktop.
I was expecting an interface to define the default terminal but couldn't find one. Eventually I found out how to set the default terminal via this article from Michael Bommarito.
It's pretty simple in fact:
gsettings set org.gnome.desktop.default-applications.terminal exec 'ghostty'
The freedom on Linux to chose your own software and configure your desktop environment never ceases to amaze me.