           SPELL=haskell-invariant
         VERSION=0.5.1
          SOURCE="invariant-${VERSION}.tar.gz"
   SOURCE_URL[0]=https://hackage.haskell.org/package/invariant-${VERSION}/${SOURCE}
     SOURCE_HASH=sha512:2ff9beda991ebbe70a3bc465860ccdb9a7088c2c4151498a1bddf9dd4debb26240dfa40919d934d66e9bc293709d970248f2bdb8e97927125df877b338725574
SOURCE_DIRECTORY="${BUILD_DIRECTORY}/invariant-${VERSION}"
        WEB_SITE="https://hackage.haskell.org/package/invariant"
      LICENSE[0]=BSD
         ENTERED=20180706
           SHORT="Haskell98 invariant functors"
cat << EOF
Haskell98 invariant functors (also known as exponential functors). For more
information, see Edward Kmett's article "Rotten Bananas".
EOF
