Added custom prelude.

We need this again because of Monoid/Semigroup.

1 files changed, 22 insertions, 0 deletions

diff --git a/prelude/Prelude.hs b/prelude/Prelude.hs
new file mode 100644
index 000000000..68e1b30f7
--- /dev/null
+++ b/prelude/Prelude.hs
@@ -0,0 +1,22 @@
+{-# LANGUAGE PackageImports #-}
+{-# LANGUAGE CPP #-}
+
+module Prelude
+(
+  module P
+, Monoid(..)
+, Semigroup(..)
+, Applicative(..)
+#if MIN_VERSION_base(4,9,0)
+-- <> is exported in Semigroup
+#else
+, (<>)
+#endif
+)
+where
+
+import "base" Prelude as P
+import Data.Semigroup (Semigroup(..))  -- includes (<>)
+#if MIN_VERSION_base(4,11,0)
+import Data.Monoid (Monoid(..))
+#endif