Remove kerl archives after build
diff --git a/bin/source-erlang.sh b/bin/source-erlang.sh
index 2e38e84..f5ada8d 100755
--- a/bin/source-erlang.sh
+++ b/bin/source-erlang.sh
@@ -89,6 +89,7 @@
     ${KERL} delete build ${ver}
   done
   ${KERL} list installations
+  rm -rf ~/.kerl/archives/*
 else
   # Build from source tarball
   # Pull down and checkout the requested Erlang version