The snapcraft documentation describes gadget snaps in detail. The only additional thing we’ll show here is an example showing how to set the above configuration options for ubuntu-frame:
defaults:
BPZbvWzvoMTrpec4goCXlckLe2IhfthK:
display: |
layouts:
default:
cards:
- card-id: 0
unknown-1:
orientation: inverted
config: |
wallpaper-top=0x92006a
wallpaper-bottom=0xdd4814
add-wayland-extensions=zwp_pointer_constraints_v1:zwp_relative_pointer_manager_v1
daemon: true