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authorng0 <ng0@we.make.ritual.n0.is>2016-09-18 16:09:54 +0000
committerLeo Famulari <leo@famulari.name>2016-09-22 20:09:54 -0400
commit54c37341d1720c5cdd3772e729a419f2f46b6fb2 (patch)
tree462c8e2292d55de984e94f3a367011929e449c02 /gnu
parentf8270331020ed4051a4ef51151a2622bb95ef3b7 (diff)
downloadguix-54c37341d1720c5cdd3772e729a419f2f46b6fb2.tar
guix-54c37341d1720c5cdd3772e729a419f2f46b6fb2.tar.gz
gnu: Add ghc-transformers.
* gnu/packages/haskell.scm (ghc-transformers): New variable. Signed-off-by: Leo Famulari <leo@famulari.name>
Diffstat (limited to 'gnu')
-rw-r--r--gnu/packages/haskell.scm29
1 files changed, 29 insertions, 0 deletions
diff --git a/gnu/packages/haskell.scm b/gnu/packages/haskell.scm
index 861f59456e..9205e958c0 100644
--- a/gnu/packages/haskell.scm
+++ b/gnu/packages/haskell.scm
@@ -6751,4 +6751,33 @@ preserved. It also provides features for random access to archive content using
an index.")
(license license:bsd-3)))
+(define-public ghc-transformers
+ (package
+ (name "ghc-transformers")
+ (version "0.5.2.0")
+ (source
+ (origin
+ (method url-fetch)
+ (uri (string-append
+ "https://hackage.haskell.org/package/transformers/transformers-"
+ version ".tar.gz"))
+ (sha256
+ (base32
+ "1qkhi8ssf8c4jnmrw9dzym3igqbzq7h48iisaykdfzdsm09qfh3c"))))
+ (build-system haskell-build-system)
+ (home-page "http://hackage.haskell.org/package/transformers")
+ (synopsis "Concrete functor and monad transformers")
+ (description
+ "A portable library of functor and monad transformers, inspired by the paper
+'Functional Programming with Overloading and Higher-Order Polymorphism',
+by Mark P Jones. This package contains the monad transformer class and IO monad class,
+concrete functor and monad transformers, each with associated operations and functions
+to lift operations associated with other transformers. The package can be used on
+its own in portable Haskell code, in which case operations need to be manually lifted
+through transformer stacks. Alternatively, it can be used with the
+non-portable monad classes in the @code{mtl} or @code{monads-tf} packages,
+which automatically lift operations introduced by monad transformers through
+other transformers.")
+ (license license:bsd-3)))
+
;;; haskell.scm ends here