Binary package “buildd” in ubuntu bionic

Daemon for automatically building Debian binary packages from Debian sources

 The sbuild suite of programs (buildd and sbuild) are
 used to build binary packages from source packages. The wanna-build
 database tracks packages which require building; buildd schedules
 work from information it gets from the wanna-build database; sbuild
 does the actual package building.
 buildd is a daemon which will build Debian packages automatically
 using the wanna-build database to identify which packages need to be
 built. Note that the wanna-build database is not packaged, and
 requires installing separately.