Complain if no input file is specified on the command line
Break if dpkg-buildpackage does not succeed
Require debhelper >=9 as Build-Depends
Use a single "now" time throughout the process
Take into account the source directory of files to copy
Options for full/binary-only builds and package signing
Consider dpkg-buildpackage warnings as errors
Split engine and CLI
License reminder in all source files
Copy produced source packages
Use requested architecture in control file