Please consider merging branch reproducible of repository https://git.spwhitton.name/propellor.
This makes the generated /usr/src/propellor/propellor.git reproducible, so that the whole Debian package can be built reproducibly.
So far as I can tell, this is the only part of the propellor build that is not reproducible at present. It's also the only issue listed on the reproducible builds team website.
--spwhitton
I've merged that, thanks.
IIRC, ghc only produces reproducible output when not doing any parallel building. If that is currently avoided, it's probably only by accident. It might be worth forcing -j1 when building the debian package.