Except just having binary packages, it should be possible to create final OS images on http://packages.sugarlabs.org using only its web UI. The resulted files will be accessible for download from http://download.sugarlabs.org.
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Except just having binary packages, it should be possible to build downstream packages and final OS images on http://packages.sugarlabs.org using only its web UI. The resulted files will be accessible for download from http://download.sugarlabs.org. It is [https://build.opensuse.org/ Open Build Service] based service to build packages and images for rpm and deb based GNU/Linux distributions.