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-rw-r--r--gnu/packages/haskell.scm3
1 files changed, 3 insertions, 0 deletions
diff --git a/gnu/packages/haskell.scm b/gnu/packages/haskell.scm
index c81b37a7c3..bfc061c107 100644
--- a/gnu/packages/haskell.scm
+++ b/gnu/packages/haskell.scm
@@ -2289,6 +2289,9 @@ combine hash values.")
         (base32
          "0k932nyd08l3xxbh2g3n76py2f4kd9yw4s5a065vjz0xp6wjnxdm"))))
     (build-system haskell-build-system)
+    (arguments
+     `(#:cabal-revision
+       ("1" "0rv40xkg3gj8jnqsry1gq3f5s5la6d5arg8fzkirnwdpcgha1as6")))
     (inputs `(("ghc-hashable" ,ghc-hashable)))
     (home-page "http://hackage.haskell.org/package/hashable-time")
     (synopsis "Hashable instances for Data.Time")