142/151: gnu: Add ghc-half.

[Paul]

toothbrush pushed a commit to branch wip-haskell-platform-7.10.2-a
in repository guix.

commit ae603a2a0bbd845e9110ab0910e7861617785ee0
Author: Paul van der Walt <address@hidden>
Date:   Fri Oct 16 11:36:34 2015 +0200

    gnu: Add ghc-half.
    
    * gnu/packages/haskell.scm (ghc-half): New variable.
---
 gnu/packages/haskell.scm |   21 +++++++++++++++++++++
 1 files changed, 21 insertions(+), 0 deletions(-)

diff --git a/gnu/packages/haskell.scm b/gnu/packages/haskell.scm
index c0236f6..549fd13 100644
--- a/gnu/packages/haskell.scm
+++ b/gnu/packages/haskell.scm
@@ -838,6 +838,27 @@ you can safely allocate resources.")
 XSS attacks.")
     (license bsd-3)))
 
+(define-public ghc-half
+  (package
+    (name "ghc-half")
+    (version "0.2.2.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "http://hackage.haskell.org/package/half/half-";
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0zhwc6ps5w4ccnxl8sy623z4rjsafmnry69jpkw4hrbq11l402f1"))))
+    (build-system haskell-build-system)
+    (home-page "http://github.com/ekmett/half";)
+    (synopsis "Half-precision floating-point")
+    (description "Half-precision floating-point computation library for
+Haskell.")
+    (license bsd-3)))
+
 (define-public ghc-streaming-commons
   (package
     (name "ghc-streaming-commons")