diff --git a/NLP/Semiring/Helpers.hs b/NLP/Semiring/Helpers.hs
new file mode 100644
--- /dev/null
+++ b/NLP/Semiring/Helpers.hs
@@ -0,0 +1,4 @@
+module NLP.Semiring.Helpers where 
+
+cartesian as bs = [(a,b) | a <- as, b <- bs] 
+
diff --git a/semiring.cabal b/semiring.cabal
--- a/semiring.cabal
+++ b/semiring.cabal
@@ -1,5 +1,5 @@
 name:                semiring
-version:             0.1
+version:             0.1.1
 synopsis:            Semirings, ring-like structures used for dynamic programming applications 
 description:         This provides a type class for semirings and 
                      implementations of the common semirings used in natural language 
@@ -11,6 +11,7 @@
 maintainer:          <srush at mit dot edu>
 build-Type:          Simple
 cabal-version:       >= 1.2
+homepage:            http://github.com/srush/SemiRings/tree/master
 
 flag testing
     description: Testing mode, only build minimal components
@@ -25,7 +26,7 @@
                          NLP.Semiring.Counting
                          NLP.Semiring.Derivation
                          NLP.Semiring.ViterbiNBestDerivation
-
+    other-modules:       NLP.Semiring.Helpers
     if flag(testing)
         buildable: False