ring-swagger & compojure-api
jdt 2018-08-23T16:21:09.000100Z

Byte array response bodies broken after compojure-api+muuntaja upgrade. Gettiing unexpected base64 content in ByteArrayInputStream instead of msgpack content.

jdt 2018-08-23T18:42:53.000100Z

And ... with clarity, resolution. :formats (m/create (-> m/default-options (m/install m.format.msgpack/format))) appears to solve the problem. While I'm sure that was well understood by the Metosin authors, for those of us who spend less time eating and breathing all things compojure-api and muuntaja, the way to unbreak breaking changes isn't always obvious. Unfortunately it was days lost for me.

jdt 2018-08-23T18:59:51.000100Z

By the way, the reason the solution wasn't obvious to me is because I didn't see the need for it, because the "Default Options" on this page https://github.com/metosin/muuntaja/blob/master/doc/Configuration.md#loose-matching-on-content-type would suggest that msgpack stuff is built in, though at the same time the change log breaking changes says that msgpack is an optional module, so it's confusing.