You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: nim.rb
    path of file: ./repos/homebrew-core/Formula/n
    
    the code of the file until where you have to start completion: class Nim < Formula
  desc "Statically typed compiled systems programming language"
  homepage "https://nim-lang.org/"
  url "https://nim-lang.org/download/nim-2.0.2.tar.xz"
  sha256 "64f51d3bf56de9d0ee79e2ca6a9ce94454af9a63a141a6969ce8c59a60b82ccf"
  license "MIT"
  head "https://github.com/nim-lang/Nim.git"
    
  def install
    if build.head?
      # this will clone https://github.com/nim-lang/csources_v1
      # at some hardcoded revision
      system "/bin/sh", "build_all.sh"
      # Build a new version of the compiler with readline bindings
      system "./koch", "boot", "-d:release", "-d:useLinenoise"
    else
      system "/bin/sh", "build.sh"
      system "bin/nim", "c", "-d:release", "koch"
      system "./koch", "boot", "-d:release", "-d:useLinenoise"
      system "./koch", "tools"
    end