Package: foo
Version: bar
User: debian-emacsen@lists.debian.org
Usertags: dh-elpa-transition emacs24-removal

Dear maintainer,

Your package has a dependency and/or build dependency on emacs24, which will
shortly be removed from the archive.  Please update the package to depend on
emacs25 instead.

The easiest way to do this is to transition the package to build using dh-elpa.
This will also avoid future bugs like this one, since the Emacs major version is
updated once, centrally, in dh-elpa.

To this end, I have prepared an NMU of your package, transitioning it to use
dh-elpa, and will momentarily upload it to DELAYED/15.  Please let me know if I 
should delay it further.  An nmudiff will follow-up this bug.i

Once the emacs24 removal process starts, this bug will be upgraded to RC
severity.

Thanks!