+the bare minimum and installs, by default, an allow-all kind of engine. A
+deny-all policy engine exists and can be switched to by using
+`-Dpolicy-default=deny-all` build time option.
+
+For instance, in order to configure the compositor with that policy one could
+issue:
+
+ $ meson -Dprefix=/path/to/where/to/install/compositor -Dpolicy-default=deny-all build_directory