This directory contains a few variants of gsettings-desktop-schemas with different schemas for testing purposes.
# download gsettings-desktop-schemas package wget http://archive.ubuntu.com/ubuntu/pool/main/g/gsettings-desktop-schemas/gsettings-desktop-schemas_<version>.deb # extract schema sources (/usr/share/glib-2.0/schemas/*.gschema.xml & .override) ar x gsettings-desktop-schemas_<version>.deb tar xf data.tar.zst # compile schemas (/usr/share/glib-2.0/schemas/gschemas.compiled) glib-compile-schemas --targetdir path/to/testing/gschemas usr/share/glib-2.0/schemas/