How to install Pandoc on Arch Linux based distros

1. Add haskell-core was above extra in /etc/pacman.conf:
   

   $ sudo nano /etc/pacman.conf
   [haskell-core]
   Server = http://xsounds.org/~haskell/core/$arch

2. Remove alex, ghc, happy and other haskell packages from the extra repository from your system
3. Add key and install Pandoc and Texlive (needed to generate PDF):
   

   $ sudo pacman-key -r 4209170B
   $ sudo pacman-key --lsign-key 4209170B
   $ sudo pacman -Scc
   $ sudo pacman -Syy
   $ sudo pacman -S haskell-pandoc haskell-pandoc-citeproc haskell-pandoc-types
   $ sudo pacman -S texlive-core 

4. I am using Sphinx which is a tool that makes it easy to create intelligent and beautiful documentation. Sphinx and I use reStructuredText (rst) instead of markdown (md). Here is a comparison between markdown and reStructuredText. Try pandoc site offers to convert between different text syntax formats.
   These is a little reStructuredText syntax:
   

   Title
   =====
   
   Heading 1
   ---------
   
   Heading 2
   `````````
   
   Heading 3
   '''''''''
   
   Heading 4
   .........
   
   Heading 5
   ~~~~~~~~~
   
   Heading 6
   *********
   
   Heading 7
   +++++++++
   
   Heading 8
   ^^^^^^^^^
   
   *Italic*
   
   **bold**

   ReStructuredText’s cheat sheet
   
5. Converting reStructuredText to PDF and DOCX:
   

   $ pandoc -V geometry:a4paper -f rst --toc --smart -o test.pdf test.rst
   $ pandoc -V geometry:a4paper -f rst --toc --smart -o test.docx test.rst

6. Converting reStructuredText to other formats.