Split-ssh for Radicle

I am using split-ssh for connecting to my Github account and have no problem with it. Recently I discovered a private alternative for Github called Radicle and installed it in an app qube which i already configured for split-ssh. When I run rad auth or rad self commands (which are related to ssh key generation) dom0 command execution prompt pops up normally but Radicle doesn’t use my ssh private keys in my ssh vault qube, instead it looks for ~/.radicle/keys directory which is the default. Of course I want to store all my ssh private keys in my offline ssh vault qube for security. So my question is: How can i configure my split-ssh setup so that it works well with Radicle?