I have installed the latest available version of the Haskell platform on Elementary with apt-get
But the actual version is pretty old:
> sudo apt-get install haskell-platform
Reading package lists... Done
Building dependency tree
Reading state information... Done
haskell-platform is already the newest version (2014.2.0.0.debian2).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
How can i install the newest version? https://www.haskell.org/platform/