Drop support for GHC < 7.10

.travis.yml

@@ -3,18 +3,10 @@
 # See http://www.reddit.com/r/haskell/comments/1os3f6/how_to_use_travisci_with_multiple_ghc_versions/
 
 env:
- # - GHCVER=7.6.1
- # - GHCVER=7.6.2
- - GHCVER=7.6.3
- - GHCVER=7.8.4
  - GHCVER=7.10.3
  - GHCVER=8.0.1
  - GHCVER=8.2.1
 
-matrix:
-  allow_failures:
-   - env: GHCVER=7.10.1
-
 before_install:
  - sudo add-apt-repository -y ppa:hvr/ghc
  - sudo apt-get update

test/Test/Gen.hs

@@ -9,7 +9,6 @@ module Test.Gen
     ( genWaiRequest
     ) where
 
-import Control.Applicative
 import Data.ByteString.Char8 (ByteString)
 import Data.CaseInsensitive (CI)
 import Data.List (intersperse)

test/Test/Request.hs

@@ -1,4 +1,5 @@
 {-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE OverloadedStrings #-}
 ------------------------------------------------------------
 -- Copyright (c)  Erik de Castro Lopo <[email protected]>
 -- License : BSD3
@@ -13,7 +14,6 @@ module Test.Request
     , mkPostRequestBody
     ) where
 
-import Control.Applicative
 import Data.ByteString (ByteString)
 import Data.Char
 import Data.Maybe

test/Test/TestServer.hs

@@ -9,7 +9,6 @@ module Test.TestServer
     , runTestServerTLS
     ) where
 
-import Control.Applicative
 import Data.ByteString (ByteString)
 import Data.List (sort)
 import Data.Monoid

test/Test/Util.hs

@@ -7,7 +7,6 @@
 module Test.Util where
 
 import Blaze.ByteString.Builder
-import Control.Applicative
 import Control.Concurrent.Async
 import Control.Exception hiding (assert)
 import Control.Monad (forM_, when, unless)

test/test-io.hs

@@ -5,7 +5,6 @@
 -- License : BSD3
 ------------------------------------------------------------
 
-import Control.Applicative
 import Control.Concurrent.Async
 import Control.Exception
 import Control.Monad
@@ -35,11 +34,8 @@ proxyTestDebug = False
 
 main :: IO ()
 main = do
-#if __GLASGOW_HASKELL__ > 706
-    -- Clear the `http_proxy` enviroment variable. We can't use `unsetEnv` if
-    -- we want to support ghc 7.6.
+    -- Clear the `http_proxy` enviroment variable.
     unsetEnv "http_proxy"
-#endif
     bracket
         (mapM async [ runTestServer, runTestServerTLS ])
         (mapM_ cancel)