201
COSMIC lock screen will be customizable with themes
(fosstodon.org)
From Wikipedia, the free encyclopedia
Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
Community icon by Alpár-Etele Méder, licensed under CC BY 3.0
Rust wouldn't necessarily make it more responsive. It is more oriented towards safety and robustness.
Cosmic might be more responsive / efficient due to the fact that it's a new development and they can choose to implement things better and not carry old baggage, but that's about it. Rust doesn't have much say in it.
Edit: Although, if they are moving away from JavaScript in Gnome as their shell language to pure Rust in Cosmic, then you would probably see some responsiveness / efficiency gains, yes.