Improve Mac, Linux installation scripts. Still assumes using build.sh.

linux-install.sh

 #!/bin/sh
 
-# Installation for Linux (tested on Ubuntu 14.10)
+# Installation for Linux (tested on Ubuntu 14.10) from IHaskell repo directory.
+# TODO Split out setup for installation from Hackage released versions.
 
-sudo apt-get install python-dev
-sudo apt-get install python-pip
-sudo pip install -U 'ipython[all]'
+# Install IPython.
+# python-pip is out of date, causes problems, so we get the latest version.
+#sudo apt-get install python-pip
+easy_install -U pip
+pip install -U 'ipython[all]'
 
-sudo apt-get install libtinfo-dev
-sudo apt-get install libzmq3-dev
+# Install GHC, Cabal, Alex, Happy
 
-sudo apt-get install libcairo2-dev
-sudo apt-get install libpango1.0-dev
+# Adjust these as you desire.
+CABALVER=1.22
+GHCVER=7.8.4
+# You will want to add this to your shell startup to pick up
+# what gets installed by Cabal.
+export PATH=~/.cabal/bin:/opt/cabal/$CABALVER/bin:/opt/ghc/$GHCVER/bin:$PATH
+
+sudo apt-get update
+sudo apt-get install -y software-properties-common
+sudo add-apt-repository -y ppa:hvr/ghc
+sudo apt-get update
+sudo apt-get install -y cabal-install-$CABALVER ghc-$GHCVER
+
+cabal install alex happy
+
+sudo apt-get install -y python-dev
+
+sudo apt-get install -y libtinfo-dev
+sudo apt-get install -y libzmq3-dev
+
+sudo apt-get install -y libcairo2-dev
+sudo apt-get install -y libpango1.0-dev
 
 ./build.sh all
 ./build.sh display

macos-install.sh

 #!/bin/sh
 
-# Installation for Mac OS X.
+# Installation for Mac OS X from IHaskell repo directory.
+# TODO Split out setup for installation from Hackage released versions.
 #
 # This script assumes use of Homebrew.
 # It is assumed you already have GHC and Cabal installed through Homebrew
@@ -19,6 +20,19 @@ else
     exit 1
 fi
 
+brew update
+
+# Install IPython.
+pip --version >& /dev/null
+if [ $? ]; then
+    pip install -U 'ipython[all]'
+else
+    echo "Python pip needs to be installed."
+    echo "  One way is to install Homebrew Python:"
+    echo "  $ brew install python"
+    exit 1
+fi
+
 if [ -n "`brew --config | grep '^CLT:.*N/A'`" ]; then
     echo "You need to have XCode command line tools installed."
     echo "  $ xcode-select --install"
@@ -36,7 +50,7 @@ cabal --version >& /dev/null
 if [ $? ]; then
     true
 else
-    echo "Please install ghc."
+    echo "Please install Cabal."
     echo "  $ brew install cabal-install"
 fi