not necessarily a xtdb issue but maybe there is a way around configuring it: Im currently using duct, and it basically merges the prod config with the test one, merging the prod values with the test values the thing is, I want to run the tests in memory. passing an empty object cfg {} to xtdb does the job but when I merge an empty map with the ones containing production cfg I get the production cfg back, obviously is there a way to configure an in memory database using this cfg format?

{:xtdb/tx-log {:kv-store {...}}
 :xtdb/document-store {:kv-store {...}}
 :xtdb/index-store {:kv-store {...}}}