For those not in the know, Flutter is an open-source UI software development kit (SDK) created by Google to help those who want to build quick and modern applications for a wide-range of operating systems, including Android, Linux, Mac, iOS, Windows, Google Fuchsia, that work across desktop, mobile, and the Web.
A year ago, Canonical teamed up with Google to make the Flutter SDK available on Linux as Snap, the universal software deployment and package management system for Ubuntu and other GNU/Linux distributions, allowing those interested in building beautiful apps on the Linux desktop.