In my old versions of Ubuntu I would automatically get the dot-el files for emacs when I installed it. This was very useful because if I wanted a private version of a function (eg compile-without-questions automatically saves all files before running the compile function) I could consult the source of the official version and amend it.
My work-place used Red Hat and I was able to add to the specification of new machines that some package was installed that contained the dot-el files (the source code versus the compiled code) but I can't remember what it was.
My home machine is Debian-based (Mint) and I'm looking for a similar Debian package but failing. Is there one?
I know I could install Emacs from source for myself and get them that way but that seems overkill.