Description

jigdo, or Jigsaw Download is a tool, mostly popular in Debian-land, to obtain installation ISO images by composing them from some specific metadata files (*.jigdo, *.template files) and binary packages obtained from mirrors, older media and so on.

The goal of this hack week project is to write a prototype of a similar tool, but for rootfs trees and, potentially, filesystem images.

Goals

• Initial prototype reproducing an already-built filesystem tree from .rpm packages (with no chroot and package manager execution)
• Have some preliminary file format defined for the metadata
• Try to reproduce filesystem images as well. Perhaps try EROFS.

Stretch Goals

• .deb/APT support

Resources

• https://www.einval.com/~steve/software/jigdo/
• https://erofs.docs.kernel.org/en/latest/