We should benefit from Wildfly Glow rules that look into annotation values to discover that the h2 driver is required. For example this construct should bring the layer:

@DataSourceDefinition(name="java:jboss/datasources/batch-processingDS",
        className="org.h2.jdbcx.JdbcDataSource",
        url="jdbc:h2:mem:batch-processing;DB_CLOSE_ON_EXIT=FALSE;DB_CLOSE_DELAY=-1",
        user="sa",
        password="sa"
)