requireNonNull(request, "request");

        // this map is read ONLY to get config from (profiles + env + system + user)
        Map<String, String> mergedProps = createMergedProperties(request);

        boolean mavenMaven3Personality = Features.mavenMaven3Personality(mergedProps);
        MavenSessionBuilderSupplier supplier = new MavenSessionBuilderSupplier(repoSystem, mavenMaven3Personality);