libghc-aeson-compat-dev 0.3.6-6build1 (amd64 binary) in ubuntu bionic

 Compatibility layer for aeson
  * decode etc. work as in aeson >=0.9
  * but it is generalised to work in any MonadThrow (that is extra)
  * .:? works as in aeson <0.10
  * .:! works as .:? in aeson ==0.10
  * Orphan instances FromJSON Day and FromJSON LocalTime for aeson <0.10
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 This package provides a library for the Haskell programming language.
 See http://www.haskell.org/ for more information on Haskell.