# 2017-02-06 A couple of weeks ago I resurrected an old project [1]. At the time when I deveoped the project 2-3 years ago I used CouchDB 1.4, now CouchDB 2.x is the latest version. There were a number of breaking changes which made it impossible to import my old backuped databases. Luckily, it is easily possible to install older versions of packages on Archlinux. I used an old package archive [2] to download old versions of Erlang and CouchDB. After untarring, it was just `$ makepkg` and then I could install the packages via `sudo pacman -U ./....`. This is the same workflow as used when downloading "third-party" packages (e.g. from AUR) and installing them. It's nice to see how well this ties into the system, since Arch also displayed incompatible dependencies to me. [1] http://findsgut.de [2] https://archive.archlinux.org/packages/e/erlang-nox/