Andrew Clemons 50b71d766b haskell/haskell-semigroups: Update dependencies. %!s(int64=2) %!d(string=hai) anos
..
README 4121dbb354 haskell/haskell-semigroups: Added (anything that associates). %!s(int64=9) %!d(string=hai) anos
doinst.sh 4121dbb354 haskell/haskell-semigroups: Added (anything that associates). %!s(int64=9) %!d(string=hai) anos
haskell-semigroups.SlackBuild 63daf9f79a All: Support $PRINT_PACKAGE_NAME env var %!s(int64=3) %!d(string=hai) anos
haskell-semigroups.info 50b71d766b haskell/haskell-semigroups: Update dependencies. %!s(int64=2) %!d(string=hai) anos
slack-desc 4121dbb354 haskell/haskell-semigroups: Added (anything that associates). %!s(int64=9) %!d(string=hai) anos

README

In mathematics, a semigroup is an algebraic structure consisting of
a set together with an associative binary operation. A semigroup
generalizes a monoid in that there might not exist an identity
element. It also (originally) generalized a group (a monoid with all
inverses) to a type where every element did not have to have an
inverse, thus the name semigroup.

After uninstalling, run this command to unregister the package from
the ghc package database: ghc-pkg recache