golang-github-glycerine-go-unsnap-stream-dev 0.0~git20180323.9f0cb55-2 (s390x binary) in ubuntu eoan

 Package unsnap is a small golang library for decoding and encoding
 the snappy streaming format, specified here:
 https://github.com/google/snappy/blob/master/framing_format.txt
 .
 Note that the streaming or framing format for snappy is different from
 snappy itself. Think of it as a train of boxcars: the streaming format
 breaks your data in chunks, applies snappy to each chunk alone, then
 puts a thin wrapper around the chunk, and sends it along in turn. You
 can begin decoding before receiving everything. And memory requirements
 for decoding are sane.