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: nacl.rb
    path of file: ./repos/homebrew-core/Formula/n
    
    the code of the file until where you have to start completion: class Nacl < Formula
  desc "Network communication, encryption, decryption, signatures library"
  homepage "https://nacl.cr.yp.to/"
  url "https://hyperelliptic.org/nacl/nacl-20110221.tar.bz2"
  mirror "https://deb.debian.org/debian/pool/main/n/nacl/nacl_20110221.orig.tar.bz2"
  sha256 "4f277f89735c8b0b8a6bbd043b3efb3fa1
    
  def install
    # Print the build to stdout rather than the default logfile.
    # Logfile makes it hard to debug and spot hangs. Applied by Debian:
    # https://sources.debian.net/src/nacl/20110221-4.1/debian/patches/output-while-building/
    # Also, like Debian, inreplace the hostname because it isn't used outside
    # build process and adds an unpredictable factor.
    inreplace "do" do |s|
      s.gsub! 'exec >"$top/log"', 'exec | tee "$top/log"'
      s.gsub!(/^shorthostname=`.*$/, "shorthostname=brew")
    end

    system "./do" # This takes a while since it builds *everything*

    # NaCL has an odd compilation model and installs the resulting
    # binaries in a directory like:
    #    <nacl source>/build/<hostname>/lib/<arch>/libnacl.a
    #    <nacl source>/build/<hostname>/include/<arch>/crypto_box.h
    #
    # It also builds both x86 and x86_64 copies if your compiler can
    # handle it, but we install only one.
    archstr = "amd64"

    # Don't include cpucycles.h
    include.install Dir["build/brew/include/#{archstr}/crypto_*.h"]
    include.install "build/brew/include/#{archstr}/randombytes.h"

    # Add randombytes.o to the libnacl.a archive - I have no idea why it's separated,
    # but plenty of the key generation routines depend on it. Users shouldn't have to
    # know this.
    nacl_libdir = "build/brew/lib/#{archstr}"
    system "ar", "-r", "#{nacl_libdir}/libnacl.a", "#{nacl_libdir}/randombytes.o"
    lib.install "#{nacl_libdir}/libnacl.a"
  end