diff --git a/.gitignore b/.gitignore
index da178fab..e6cdc122 100644
--- a/.gitignore
+++ b/.gitignore
@@ -22,3 +22,5 @@ module-name-conflicts.txt
 *.stackage
 /haddock/
 /build-summary/
+/.cabal-sandbox/
+cabal.sandbox.config
diff --git a/cabal.config b/cabal.config
new file mode 100644
index 00000000..f2a4e0f3
--- /dev/null
+++ b/cabal.config
@@ -0,0 +1 @@
+remote-repo: stackage-2014-11-27-ghc78-exc-1:http://www.stackage.org/snapshot/2014-11-27-ghc78-exc-1