Quoting @collares from #170426:
> The difference between the two versions is that one is built from the
> tarball, while the other is built from Git. The tarball includes
> byte-compiled (.elc) files but not native-compiled (.eln)
> files. The build notices the .elc files and does not rebuild them,
> but native-compilation is a side-effect of byte-compilation and so
> the .eln files aren't built either.
