You can try to skip to the wiki page, but in the likely case something doesn't go quite right, it will be hard to debug without a broader knowledge of Nix.
I'll admit Nix's has quite the learning curve, and I was more tempted to sneak around its uncompromising rigidity than when learning Haskell. But the bitter pill is worth it.
I really recommend you first read about nix with http://lethalman.blogspot.com/feeds/posts/default/-/nixpills . Once you've done that, the simple instructions at http://wiki.ocharles.org.uk/Nix should get you going.
You can try to skip to the wiki page, but in the likely case something doesn't go quite right, it will be hard to debug without a broader knowledge of Nix.
I'll admit Nix's has quite the learning curve, and I was more tempted to sneak around its uncompromising rigidity than when learning Haskell. But the bitter pill is worth it.