libghc-doctest-dev 0.16.0.1-1build5 (amd64 binary) in ubuntu focal

 The doctest program checks examples in source code comments.
 It is modeled after doctest for Python
 (<http://docs.python.org/library/doctest.html>).
 .
 Documentation is at
 <https://github.com/sol/doctest-haskell#readme>.
 .
 This package contains the normal library files.