161/177: gnu: ghc-fgl: Fix build with newer QuickCheck.

[Ricardo Wurmus]

rekado pushed a commit to branch master
in repository guix.

commit c0a541cba8cdc33d3420bfc17da022de5a2a07c6
Author: Ricardo Wurmus <address@hidden>
Date:   Tue Feb 13 12:00:15 2018 +0100

    gnu: ghc-fgl: Fix build with newer QuickCheck.
    
    * gnu/packages/haskell.scm (ghc-fgl)[arguments]: Allow building with newer
    QuickCheck.
---
 gnu/packages/haskell.scm | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/gnu/packages/haskell.scm b/gnu/packages/haskell.scm
index ea83dea..85513b5 100644
--- a/gnu/packages/haskell.scm
+++ b/gnu/packages/haskell.scm
@@ -3169,6 +3169,8 @@ variety of traversals.")
         (base32
          "0fbyb6jxy9whgrv6dgnkzz70cmy98arx3q2gnkhgl4a3d7idh36p"))))
     (build-system haskell-build-system)
+    (arguments
+     `(#:configure-flags (list "--allow-newer=QuickCheck")))
     (inputs
      `(("ghc-mtl" ,ghc-mtl)
        ("ghc-hspec" ,ghc-hspec)