​pkgsrc is a portable packaging system that supports many operating systems. It is the standard packaging system on NetBSD and Dragonfly, but also supports FreeBSD, OpenBSD, Linux, Solaris, AIX, SmartOS and others.

pkgsrc has a focus on both source and binary packages. The primary mechanism is a way to build a package including all dependencies from source, but binary packages for various OS/version/architecture combinations are provided.

tahoe-lafs can be found in filesystems/tahoe-lafs. It was added in summer 2010, and there are now binary packages from the 2011Q1 stable branch.