How to install latest GHC 7.10.1 + cabal 1.22.3.0 from source on ubuntu

for your convinience these instuction is available as:
gist
git repo

ghc

ubuntu prerequisites

# Multiprecision arithmetic library developers tools, zlib  
sudo apt-get install libgmp-dev zlib1g-dev -y  
sudo -K

ghc installation

# get distr  
cd $HOME/Downloads  
# 64 bit
wget https://www.haskell.org/ghc/dist/7.10.1/ghc-7.10.1-x86_64-unknown-linux-deb7.tar.bz2   
tar xvfj ghc-7.10.1-x86_64-unknown-linux-deb7.tar.bz2  
# 32 bit
# wget https://www.haskell.org/ghc/dist/7.10.1/ghc-7.10.1-i386-unknown-linux-deb7.tar.bz2
# tar xvfj ghc-7.10.1-i386-unknown-linux-deb7.tar.bz2  
cd ghc-7.10.1  

# install to  
mkdir $HOME/Development/bin/ghc-7.10.1  
# or choose another path

./configure --prefix=$HOME/Development/bin/ghc-7.10.1  

make install

# symbol links  
cd $HOME/Development/bin
rm -f ghc
ln -s `pwd`/ghc-7.10.1 ghc  

# add $HOME/Development/bin/ghc to $PATH  
# add this line to ~/.profile  
export GHC_HOME=$HOME/Development/bin/ghc  
export PATH=$GHC_HOME/bin:${PATH}

# to use updated path without log off
source ~/.profile

# remove temporary files  
cd $HOME/Downloads  
rm -rfv ghc-7.10.1*

cabal (package manager for haskell)

# remove old  
rm -rfv $HOME/.cabal
rm -rfv $HOME/.ghc

cabal library

# clone dist  
cd $HOME/Downloads  
curl -O https://www.haskell.org/cabal/release/cabal-1.22.3.0/Cabal-1.22.3.0.tar.gz

# extract   
tar xzvf Cabal-1.22.3.0.tar.gz  
cd Cabal-1.22.3.0  

# build
ghc --make Setup.hs
./Setup configure --user
./Setup build
./Setup install

# Remove temporary files
cd $HOME/Downloads
rm -rfv Cabal-1.22.3.0*

cabal-install

# get distributive  
cd $HOME/Downloads  
curl -O https://www.haskell.org/cabal/release/cabal-install-1.22.3.0/cabal-install-1.22.3.0.tar.gz

# extract archive  
tar xzvf cabal-install-1.22.3.0.tar.gz  
cd cabal-install-1.22.3.0  

# install  
./bootstrap.sh

# remove temporary files  
cd $HOME/Downloads  
rm -rfv cabal-install-1.22.3.0*  

# add path to cabal to PATH environment
export CABAL_HOME=$HOME/.cabal
export PATH=$CABAL_HOME/bin:$PATH