From f102e9ead343e2424df2604f9bf8897ca15f364e Mon Sep 17 00:00:00 2001
From: Brian Leung <address@hidden>
Date: Thu, 20 Jun 2019 07:56:21 +0200
Subject: [PATCH 3/7] gnu: Add ghc-genvalidity-property.

* gnu/packages/haskell.scm (ghc-genvalidity-property): New variable.
---
 gnu/packages/haskell.scm | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/gnu/packages/haskell.scm b/gnu/packages/haskell.scm
index 4d46f94fc3..3a8934bf9d 100644
--- a/gnu/packages/haskell.scm
+++ b/gnu/packages/haskell.scm
@@ -11568,6 +11568,37 @@ stand for certain ASCII character sequences, i.e. → instead of @code{->},
 with the @code{Validity} typeclass.")
     (license license:expat)))
 
+(define-public ghc-genvalidity-property
+  (package
+    (name "ghc-genvalidity-property")
+    (version "0.4.0.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/genvalidity-property/genvalidity-property-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0zayycx62226w54rvkxwhvqhznsr33dk3ds55yyqrfqbnhvph1s9"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-genvalidity" ,ghc-genvalidity)
+       ("ghc-hspec" ,ghc-hspec)
+       ("hspec-discover" ,hspec-discover)
+       ("ghc-validity" ,ghc-validity)))
+    (native-inputs `(("ghc-doctest" ,ghc-doctest)))
+    (home-page
+     "https://github.com/NorfairKing/validity")
+    (synopsis
+     "Standard properties for functions on @code{Validity} types")
+    (description
+     "This package supplements the @code{Validity} typeclass with standard
+properties for functions operating on them.")
+    (license license:expat)))
+
 (define-public ghc-validity
   (package
     (name "ghc-validity")
-- 
2.22.0