Binary package “libghc-gitrev-dev” in ubuntu lunar

compile git revision info into Haskell projects

 Ths package provides some handy Template Haskell splices for including the
 current git hash and branch in the code of your project.
 .
 This is useful for including in panic messages, --version output, or
 diagnostic info for more informative bug reports.
 .
 This package provides a library for the Haskell programming language.
 See http://www.haskell.org/ for more information on Haskell.