22/177: gnu: Add ghc-hashable-time.

[Ricardo Wurmus]

rekado pushed a commit to branch master
in repository guix.

commit 82674ed948d55d1d9782db05486147dc1db471bf
Author: Ricardo Wurmus <address@hidden>
Date:   Mon Feb 12 20:33:53 2018 +0100

    gnu: Add ghc-hashable-time.
    
    * gnu/packages/haskell.scm (ghc-hashable-time): New variable.
---
 gnu/packages/haskell.scm | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/gnu/packages/haskell.scm b/gnu/packages/haskell.scm
index e0e6154..c253deb 100644
--- a/gnu/packages/haskell.scm
+++ b/gnu/packages/haskell.scm
@@ -1806,6 +1806,29 @@ data structures.  The package provides instances for 
basic types and a way to
 combine hash values.")
     (license license:bsd-3)))
 
+(define-public ghc-hashable-time
+  (package
+    (name "ghc-hashable-time")
+    (version "0.2.0.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/hashable-time/hashable-time-";
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0k932nyd08l3xxbh2g3n76py2f4kd9yw4s5a065vjz0xp6wjnxdm"))))
+    (build-system haskell-build-system)
+    (inputs `(("ghc-hashable" ,ghc-hashable)))
+    (home-page "http://hackage.haskell.org/package/hashable-time";)
+    (synopsis "Hashable instances for Data.Time")
+    (description
+     "This package provides @code{Hashable} instances for types in
address@hidden")
+    (license license:bsd-3)))
+
 (define-public ghc-data-hash
   (package
     (name "ghc-data-hash")