toothbrush pushed a commit to branch master
in repository guix.
commit aee98223264974637987a7fca2c701c0954ffd79
Author: Paul van der Walt <[email protected]>
Date: Thu Oct 15 15:43:24 2015 +0200
gnu: Add ghc-semigroupoids.
* gnu/packages/haskell.scm (ghc-semigroupoids): New variable.
---
gnu/packages/haskell.scm | 38 ++++++++++++++++++++++++++++++++++++++
1 files changed, 38 insertions(+), 0 deletions(-)
diff --git a/gnu/packages/haskell.scm b/gnu/packages/haskell.scm
index a499a6a..12c5a93 100644
--- a/gnu/packages/haskell.scm
+++ b/gnu/packages/haskell.scm
@@ -3038,6 +3038,44 @@ are implemented as FFI bindings to efficient code from
zlib.")
(description "This package provides bifunctors for Haskell.")
(license bsd-3)))
+(define-public ghc-semigroupoids
+ (package
+ (name "ghc-semigroupoids")
+ (version "5.0.0.4")
+ (source
+ (origin
+ (method url-fetch)
+ (uri (string-append
+ "http://hackage.haskell.org/package/semigroupoids/semigroupoids-";
+ version
+ ".tar.gz"))
+ (sha256
+ (base32
+ "1jf7jnfhdvl6p18wdr21yi2fim1xb8alcn6szhrdswj0dkilgq6d"))))
+ (build-system haskell-build-system)
+ (propagated-inputs
+ `(("ghc-base-orphans" ,ghc-base-orphans)
+ ("ghc-transformers-compat" ,ghc-transformers-compat)
+ ("ghc-bifunctors" ,ghc-bifunctors)
+ ("ghc-comonad" ,ghc-comonad)
+ ("ghc-contravariant" ,ghc-contravariant)
+ ("ghc-distributive" ,ghc-distributive)))
+ (arguments `(#:tests? #f)) ; FIXME: doctest packagedb propagation problem.
+ (inputs
+ `(("ghc-semigroups" ,ghc-semigroups)
+ ("ghc-tagged" ,ghc-tagged)))
+ (home-page "http://github.com/ekmett/semigroupoids";)
+ (synopsis "Semigroupoids operations for Haskell")
+ (description "This library provides a wide array of (semi)groupoids and
+operations for working with them. A @code{Semigroupoid} is a @code{Category}
+without the requirement of identity arrows for every object in the category.
+A @code{Category} is any @code{Semigroupoid} for which the Yoneda lemma holds.
+Finally, to work with these weaker structures it is beneficial to have
+containers that can provide stronger guarantees about their contents, so
+versions of @code{Traversable} and @code{Foldable} that can be folded with
+just a @code{Semigroup} are added.")
+ (license bsd-3)))
+
(define-public ghc-contravariant
(package
(name "ghc-contravariant")
