Degrade cage to an optional dependency

Task Info (Flyspray)
Opened By	q rty (q234rty)
Task ID	78739
Type	Bug Report
Project	Arch Linux
Category	Packages: Extra
Version	None
OS	All
Opened	2023-06-08 18:39:22 UTC
Status	Assigned
Assignee	Caleb Maclennan (alerque)

Details

Description:

Regreet does not require cage and it's perfectly valid to use other compositors in place of cage. Moreover, the upstream README lists both cage and sway as possible composiors to use.