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| -rw-r--r-- | gnu/packages/haskell.scm | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/gnu/packages/haskell.scm b/gnu/packages/haskell.scm index fcbd231d7b..e0fc9f4aff 100644 --- a/gnu/packages/haskell.scm +++ b/gnu/packages/haskell.scm @@ -2406,6 +2406,39 @@ unbounded @code{Integer} type.") (description "This library provides the natural numbers for Haskell.") (license bsd-3))) +(define-public ghc-semigroups + (package + (name "ghc-semigroups") + (version "0.17.0.1") + (source + (origin + (method url-fetch) + (uri (string-append + "http://hackage.haskell.org/package/semigroups/semigroups-" + version + ".tar.gz")) + (sha256 + (base32 + "0gvpfi7s6ys4qha3y9a1zl1a15gf9cgg33wjb94ghg82ivcxnc3r")))) + (build-system haskell-build-system) + (propagated-inputs + `(("ghc-nats" ,ghc-nats) + ("ghc-tagged" ,ghc-tagged) + ("ghc-unordered-containers" ,ghc-unordered-containers))) + (inputs + `(("ghc-text" ,ghc-text) + ("ghc-hashable" ,ghc-hashable))) + (home-page "http://github.com/ekmett/semigroups/") + (synopsis "Semigroup operations for Haskell") + (description "This package provides semigroups for Haskell. 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.") + (license bsd-3))) + (define-public ghc-doctest (package (name "ghc-doctest") |