Attempting to fix more build issues

Hspec.hs

@@ -504,7 +504,11 @@ parseStringTests = describe "Parser" $ do
 
   it "breaks without data kinds" $
     parses "data X = 3" `like` [
+#if MIN_VERSION_ghc(7, 8, 0)
       ParseError (Loc 1 10) "Illegal literal in type (use DataKinds to enable): 3"
+#else
+      ParseError (Loc 1 10) "Illegal literal in type (use -XDataKinds to enable): 3"
+#endif
     ]
 
   it "parses statements after imports" $ do

build.sh

@@ -55,12 +55,12 @@ INSTALL_DIRS=`echo $INSTALLS | tr ' ' '\n' | sed 's#^#./#' | tr ' ' '\n'`
 if [ `uname` = Darwin ]; then
   cabal install --constraint "arithmoi -llvm" -j $INSTALL_DIRS --force-reinstalls
 else
-  cabal install -j $INSTALL_DIRS --force-reinstalls
+  cabal install -j $INSTALL_DIRS --force-reinstalls --constraint "arithmoi==0.4.*"
 fi
 
 # Finish installing ihaskell-diagrams.
 if [ $# -gt 0 ]; then
   if [ $1 = "display" ]; then
-      cabal install -j ihaskell-display/ihaskell-diagrams --force-reinstalls
+      cabal install -j ihaskell-display/ihaskell-diagrams --force-reinstalls --constraint "arithmoi==0.4.*"
     fi
 fi

ihaskell.cabal

@@ -95,9 +95,7 @@ library
                        utf8-string          -any,
                        uuid                 >=1.3,
                        vector               -any,
-                       ipython-kernel       >=0.3,
-                       arithmoi             ==0.4.*
-                       -- arithmoi is fixed to avoid issues with diagrams
+                       ipython-kernel       >=0.3
   if flag(binPkgDb)
     build-depends:       bin-package-db