> Many other free software projects, including FreeBSD, NetBSD, and OpenWrt, are moving in the same direction. I might be wrong (I'm away from my NetBSD boxes)

> Many other free software projects, including FreeBSD, NetBSD, and OpenWrt, are moving in the same direction. I might be wrong (I'm away from my NetBSD boxes) but build.sh script in NetBSD has a buildseed option which can be used to create identical builds of the base system.