BuildStream is a Free Software tool for building/integrating software stacks.
It takes inspiration, lessons and use-cases from various projects including
OBS, Reproducible Builds, Yocto, Baserock, Buildroot, Aboriginal, GNOME
Continuous, JHBuild, Flatpak Builder and Android repo.
BuildStream supports multiple build-systems (e.g. autotools, cmake, cpan,
distutils, make, meson, qmake), and can create outputs in a range of formats
(e.g. debian packages, flatpak runtimes, sysroots, system images) for multiple
platforms and chipsets.