[PATCH 03/21] gnu: Add ghc-monads-tf.

[Paul van der Walt]

* gnu/packages/haskell.scm (ghc-monads-tf): New variable.
---
 gnu/packages/haskell.scm | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/gnu/packages/haskell.scm b/gnu/packages/haskell.scm
index 5195425..765b669 100644
--- a/gnu/packages/haskell.scm
+++ b/gnu/packages/haskell.scm
@@ -850,6 +850,31 @@ objects, e.g. a texture object name in OpenGL or a buffer 
object name in
 OpenAL.")
     (license bsd-3)))
 
+(define-public ghc-monads-tf
+  (package
+    (name "ghc-monads-tf")
+    (version "0.1.0.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "http://hackage.haskell.org/package/monads-tf/monads-tf-";
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0z07z2lfm3l93fx0qhfd98j76d1rksi5llq67l5v09pm8da4jvyb"))))
+    (build-system haskell-build-system)
+    (home-page "http://hackage.haskell.org/package/monads-tf";)
+    (synopsis "Haskell monad classes, using type families")
+    (description
+     "This library provides monad classes using type families, with instances
+for various monad transformers.  It is inspired by the paper \"Functional
+Programming with Overloading and Higher-Order Polymorphism\", by Mark P Jones,
+see @url{http://web.cecs.pdx.edu/~mpj/pubs/springschool.html}.  This package
+is almost a compatible replacement for the @code{mtl-tf} package.")
+    (license bsd-3)))
+
 (define-public ghc-sdl
   (package
     (name "ghc-sdl")
-- 
2.6.2