diff -Nru haskell-vector-space-0.13/debian/changelog haskell-vector-space-0.15/debian/changelog
--- haskell-vector-space-0.13/debian/changelog	2018-09-30 18:24:44.000000000 +0000
+++ haskell-vector-space-0.15/debian/changelog	2019-08-03 15:57:58.000000000 +0000
@@ -1,3 +1,15 @@
+haskell-vector-space (0.15-1build1) eoan; urgency=medium
+
+  * Rebuild against new GHC abi.
+
+ -- Gianfranco Costamagna <locutusofborg@debian.org>  Sat, 03 Aug 2019 17:57:58 +0200
+
+haskell-vector-space (0.15-1) unstable; urgency=medium
+
+  * New upstream release
+
+ -- Clint Adams <clint@debian.org>  Thu, 01 Aug 2019 22:15:45 -0400
+
 haskell-vector-space (0.13-2) unstable; urgency=medium
 
   [ Clint Adams ]
diff -Nru haskell-vector-space-0.13/src/Data/Cross.hs haskell-vector-space-0.15/src/Data/Cross.hs
--- haskell-vector-space-0.13/src/Data/Cross.hs	2018-01-25 20:08:37.000000000 +0000
+++ haskell-vector-space-0.15/src/Data/Cross.hs	2018-10-05 21:52:33.000000000 +0000
@@ -1,5 +1,6 @@
 {-# LANGUAGE FlexibleInstances, FlexibleContexts, TypeOperators
-           , TypeFamilies, TypeSynonymInstances  #-}
+           , TypeFamilies, TypeSynonymInstances 
+           , UndecidableInstances  #-}
 {-# OPTIONS_GHC -Wall #-}
 ----------------------------------------------------------------------
 -- |
diff -Nru haskell-vector-space-0.13/vector-space.cabal haskell-vector-space-0.15/vector-space.cabal
--- haskell-vector-space-0.13/vector-space.cabal	2018-01-25 20:08:37.000000000 +0000
+++ haskell-vector-space-0.15/vector-space.cabal	2018-10-05 21:52:33.000000000 +0000
@@ -1,6 +1,6 @@
 Name:                vector-space
-Version:             0.13
-Cabal-Version:       >= 1.6
+Version:             0.15
+Cabal-Version:       >= 1.8
 Synopsis:            Vector & affine spaces, linear maps, and derivatives
 Category:            math
 Description:
@@ -47,18 +47,9 @@
   Other-Modules:     
                      Data.VectorSpace.Generic
 
-
   -- This library relies on type families working as well as in 6.10.
-  if impl(ghc < 6.10) {
-    buildable: False
-  }
-  if !impl(ghc >= 7.9) {
-    Build-Depends: void >= 0.4
-  }
-  if !impl(ghc >= 8.0) {
-    Build-Depends: semigroups >= 0.16
-  }
+  if  impl(ghc < 6.10) { buildable: False }
+  if !impl(ghc >= 7.6) { Build-Depends: ghc-prim >= 0.2 }
+  if !impl(ghc >= 7.9) { Build-Depends: void >= 0.4 }
+  if !impl(ghc >= 8.0) { Build-Depends: semigroups >= 0.16 }
   ghc-options:         -Wall -O2
---  ghc-prof-options:    -prof -auto-all 
-
--- For ghc-options: -ddump-simpl-stats -ddump-rules -ddump-simpl -ddump-simpl-phases