diff -Nru haskell-reducers-3.12.2/debian/changelog haskell-reducers-3.12.2/debian/changelog
--- haskell-reducers-3.12.2/debian/changelog	2017-11-26 13:51:43.000000000 +0000
+++ haskell-reducers-3.12.2/debian/changelog	2017-12-20 16:35:32.000000000 +0000
@@ -1,3 +1,9 @@
+haskell-reducers (3.12.2-1build2) bionic; urgency=medium
+
+  * Rebuild against new GHC ABI.
+
+ -- Gianfranco Costamagna <locutusofborg@debian.org>  Wed, 20 Dec 2017 17:35:32 +0100
+
 haskell-reducers (3.12.2-1build1) bionic; urgency=medium
 
   * Rebuild against new GHC ABI.