* feed.xml file contains links to various tarballs with sources and binaries
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* bunch of tarballs with sources and binaries, feed.xml contains links to these files
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Feed file [http://download.sugarlabs.org/services/toolkit/feed.xml feed.xml], in addition to several information fields, contains ''<implementation>'' tag which describes implementation of the service, in distribution terms, package. At the same time, feed file could contain various implementations for various service versions. More over the same version could be represented by several implementations:
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* source implementation, with links to source tarball and instructions how to build it
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* no arch implementation, which can be used as-is on different platforms e.g. pure python services
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* one or several binary implementations, that contain binaries for the same source implementation but for various dependency environments(e.g. f9 could contain different versions for the same packages in comparing with f11)