Injecting deb-db/postgresql makes amarok-1.4.3-r1 build without no problem.
Correct, will be fixed as soon as I commit the new revision.
Then, other packages should be fixed: on my system, I saw mail-mta/postfix, dev-libs/cyrus-sasl, app-mobilephone/gnokii... there might be many others as well. How should we handle these?
Open different bug for those I suppose; fixed now for Amarok though.