dh_golang is a debhelper program which adds the misc:Static-Built-Using substvar based on the
dependencies of the package being built. It uses go list to determine the packages imported and dpkg-
query to find the source package and version that provided that package.
dh_golang started out in 2013 by generating the misc:Built-Using substvar, but it was clarified Debian
Policy in 2017 that the Built-Using field was intended only for license-required dependencies, hence the
switch to the new Static-Built-Using field in 2022.
For backward compatibility, dh_golang will continue to generate the misc:Built-Using substvar until all
Go packages have transitioned to misc:Static-Built-Using.