107/151: gnu: Add ghc-reflection.

[Paul]

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

commit 493c04a9533768534fb54a9bbdc709be36064ad8
Author: Paul van der Walt <address@hidden>
Date:   Thu Oct 15 15:45:12 2015 +0200

    gnu: Add ghc-reflection.
    
    * gnu/packages/haskell.scm (ghc-reflection): New variable.
---
 gnu/packages/haskell.scm |   27 +++++++++++++++++++++++++++
 1 files changed, 27 insertions(+), 0 deletions(-)

diff --git a/gnu/packages/haskell.scm b/gnu/packages/haskell.scm
index 399542f..4c5a866 100644
--- a/gnu/packages/haskell.scm
+++ b/gnu/packages/haskell.scm
@@ -364,6 +364,33 @@ package.")
 package.")
     (license bsd-3)))
 
+(define-public ghc-reflection
+  (package
+    (name "ghc-reflection")
+    (version "2.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "http://hackage.haskell.org/package/reflection/reflection-";
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "10w3m6v3g6am203wbrikdbp57x9vw6b4jsh7bxdzsss4nmpm81zg"))))
+    (build-system haskell-build-system)
+    (inputs `(("ghc-tagged" ,ghc-tagged)))
+    (home-page "http://github.com/ekmett/reflection";)
+    (synopsis
+     "Reifies arbitrary terms into types that can be reflected back into
+terms")
+    (description
+     "This package addresses the /configuration problem/ which is propogating
+configurations that are available at run-time, allowing multible
+configurations to coexist without resorting to mutable global variables or
+'System.IO.Unsafe.unsafePerformIO'.")
+    (license bsd-3)))
+
 (define-public ghc-old-locale
   (package
     (name "ghc-old-locale")