ghcjs-base-cabal-version.patch

diff --git a/ghcjs-base.cabal b/ghcjs-base.cabal
index 7012e61..c314726 100644
--- a/ghcjs-base.cabal
+++ b/ghcjs-base.cabal
@@ -1,4 +1,4 @@
-cabal-version:       3.0
+cabal-version:       2.0
 name:                ghcjs-base
 version:             0.2.0.3
 synopsis:            base library for GHCJS