Package: src:debian-installer Version: 20121114 Severity: serious debian-installer uses bf-utf-source, but misses a Built-Using field for this package. Since dpkg (>= 1.16.2), dpkg-query has an easier way to extract the required information for installed packages: dpkg-query -f '${source:Package} (= ${source:Version}), ' -W bf-utf-source should give the missing value. Ansgar