Re: RFC: Adding BBDB to Emacs core

[Radon Rosborough]

> There's a case to be made for allowing ELPA archives to exports several
> versions of a package at the same time, so older Emacsen can still
> install the old version of a package without having to download the old
> version by hand.

For another perspective, see also source-based package managers like
straight.el [1], Borg [2], el-get [3], et cetera, which easily bypass
this problem by allowing you to install any version you want, and to
change your mind after installation.

[1]: https://github.com/raxod502/straight.el
[2]: https://github.com/emacscollective/borg
[3]: https://github.com/dimitri/el-get