Package: brp-pacu Version: 2.1.1+git20111020-5 Severity: serious
brp-pacu build-depends on libgtkdatabox-0.9.2-0-dev | libgtkdatabox-dev . Debian autobuilders only look at the first option.
libgtkdatabox-0.9.2-0-dev is now an obsolete package (no longer built by the libgtkdatabox source).
Please either remove the libgtkdatabox-0.9.2-0-dev option from the build-dependencies or reverse the order of the options and then check the package can be succesfully built/used with the new libgtkdatabox-dev.