First release of bst-external. API is not considered stable yet. Plugins added in this release: o Docker Source - Pulls Docker images from Docker registries. o DPKG Build Element - Builds elements using Debian sources. o DPKG Deploy Element - Uses artifacts generated by buildstream to produce Debian packages. o FlatPak Image Element - Uses artifacts generated by buildstream to produce FlatPak images. o Quilt Source - Runs Quilt on top of previously-staged sources. o X86Image Element - Uses artifacts generated by buildstream to produce a disk image.