Hi, Now that bzip2 support has been enabled in devel/boost, let me present you archivers/innoextract.
Inno Setup is a tool to create installers for Microsoft Windows applications. innoextract allows to extract such installers under non-windows systems without running the actual installer using Wine. innoextract is able to unpack GOG.com installers, Wadjet Eye Games installers (to play with AGS), Arx Fatalis patches (for use with Arx Libertatis) as well as various other Inno Setup executables. With this, I'm able to buy some old games from GOG.com, extract them with innoextract, and then play them with DOSBox, ScummVM... (and a new port I'm working on), all of this on OpenBSD.
innoextract.tgz
Description: Binary data