modern ghc only

.travis.yml

@@ -8,15 +8,6 @@ language: c
 # release of a major GHC version. Setting HPVER implictly sets
 # GHCVER. Omit lines with versions you don't need/want testing for.
 env:
- - CABALVER=1.16 GHCVER=6.12.3
- - CABALVER=1.16 GHCVER=7.0.1
- - CABALVER=1.16 GHCVER=7.0.2
- - CABALVER=1.16 GHCVER=7.0.3
- - CABALVER=1.16 GHCVER=7.0.4
- - CABALVER=1.16 GHCVER=7.2.1
- - CABALVER=1.16 GHCVER=7.2.2
- - CABALVER=1.16 GHCVER=7.4.1
- - CABALVER=1.16 GHCVER=7.4.2
  - CABALVER=1.16 GHCVER=7.6.1
  - CABALVER=1.16 GHCVER=7.6.2
  - CABALVER=1.18 GHCVER=7.6.3
@@ -26,11 +17,8 @@ env:
  - CABALVER=1.18 GHCVER=7.8.4
  - CABALVER=1.22 GHCVER=7.10.1
  - CABALVER=1.22 GHCVER=7.10.2
-# - CABALVER=head GHCVER=head
- - HPVER=2013.2.0.0
- - HPVER=2012.4.0.0
- - HPVER=2012.2.0.0
- - HPVER=2011.4.0.0
+ - CABALVER=1.22 GHCVER=7.10.3
+ - CABALVER=head GHCVER=head
 
 # Note: the distinction between `before_install` and `install` is not
 #       important.
@@ -93,7 +81,6 @@ script:
  # (including tests/benchmarks)
  - cabal build
 
- - cabal test
  - cabal check
 
  # tests that a source-distribution can be generated

protolude.cabal

@@ -33,6 +33,7 @@ library
     Debug
     List
     Monad
+    Show
     Unsafe
 
   default-extensions:

src/Monad.hs

@@ -1,3 +1,4 @@
+{-# LANGUAGE CPP #-}
 {-# LANGUAGE NoImplicitPrelude #-}
 
 module Monad (
@@ -38,7 +39,12 @@ module Monad (
   ) where
 
 import Prelude (concat, seq)
+
+#if (__GLASGOW_HASKELL__ >= 710)
+import Control.Monad hiding ((<$!>))
+#else
 import Control.Monad
+#endif
 
 concatMapM :: (Monad m) => (a -> m [b]) -> [a] -> m [b]
 concatMapM f xs = liftM concat (mapM f xs)
@@ -54,3 +60,10 @@ liftM2' f a b = do
   let z = f x y
   z `seq` return z
 {-# INLINE liftM2' #-}
+
+(<$!>) :: Monad m => (a -> b) -> m a -> m b
+f <$!> m = do
+  x <- m
+  let z = f x
+  z `seq` return z
+{-# INLINE (<$!>) #-}