I am playing with Elephant database system on SBCL with Postmodern backend. When I try to open a store, I got this error (after a warning about SB-IMPL package lock):
The function SB-IMPL::QUICK-INTEGER-TO-STRING is undefined.

I started a fresh SBCL session, and indeed I could not even find the SB-IMPL::QUICK-INTEGER-TO-STRING symbol.

I assume the Elephant devel team know what they are doing. So do I need any special build customization to have this function?

Thank you.