This snap will only work on Wayland compositors, but doesn't require Ubuntu Frame specifically. For example, it can be used on GNOME/Wayland by running mir-kiosk-neverputt, but that isn't the intended use.
When used on Ubuntu Core, mir-kiosk-neverputt will automatically run as a daemon on startup. If building an embedded system based on another OS then you may need to enable the daemon with:
The packages for RHEL 8 and RHEL 7 are in each distribution’s respective Extra Packages for Enterprise Linux (EPEL) repository. The instructions for adding this repository diverge slightly between RHEL 8 and RHEL 7, which is why they’re listed separately below.
The EPEL repository can be added to RHEL 8 with the following command: