Binary package “libghc-onetuple-dev” in ubuntu eoan

singleton tuple

 OneTuple fills the tuple gap with a singleton tuple.
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 OneTuple does not support the usual parenthesized tuple syntax.
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 OneTuple
  * has the expected laziness properties
  * can be pattern-matched
  * ships with instances for several standard type classes, including
    all those supported by H98-standard tuples
  * requires no language extensions, except for hierarchical modules
 .
 This package provides a library for the Haskell programming language.
 See http://www.haskell.org/ for more information on Haskell.