Here are some basic notes on how I installed from source:

Installing onto my Ubuntu x86_64 machine

Generally followed the build from source instructions

sudo apt-get install ghc6 # this bootstraps so we can build ghc 7

get latest ghc

wget http://haskell.org/ghc/dist/7.0.3/ghc-7.0.3-src.tar.bz2 tar -jxvf ghc-7.0.3-src.tar.bz2 cd there ./configure make sudo make install

get cabal

wget http://lambda.galois.com/hp-tmp/2011.2.0.1/haskell-platform-2011.2.0.1.tar.gz tar xvfz haskell-platform-2011.2.0.1.tar.gz cd there ./configure make sudo make install

get pandoc

edit ~/.cabal/config to uncomment user-install and set the value to False (so that we get global installation) sudo cabal install pandoc

pandoc -v

:)