Someone just added LDAP acess to lift (http://jgoday.wordpress.com/2009/11/27/lift-ldap/) . It would be create if someone tried this out in ESME.
There are bunch of things that still need to be discussed before this occurs. How do we use the LDAP-based roles? As a basis for pools? Should we take user data from the LDAP? If so, how do we decide which parameters are necessary in ESME and what happens if they don't exist in the LDAP?