Yarn: The homebrew packages is outdated.

I think this URL and sha256 need to be updated: https://github.com/Homebrew/homebrew-core/blob/master/Formula/yarn.rb#L6-L12

https://yarnpkg.com/downloads/0.16.0/yarn-v0.16.0.tar.gz is the right URL to use.

Unfortunately I'm not on a Mac so I can't test it :(

Well today, I learned how Homebrew actually works @Daniel15 haha

Just submitted a PR here https://github.com/Homebrew/homebrew-core/pull/6060

Not sure how long everything will take but if it's taking too long for them to merge it into Homebrew you can get 0.16.0 by doing the following.

Run this:

brew edit yarn

Replace the content in that file with this:

require "language/node"

class Yarn < Formula
  desc "Javascript package manager"
  homepage "https://yarnpkg.com/"
  url "https://yarnpkg.com/downloads/0.16.0/yarn-v0.16.0.tar.gz"
  sha256 "cd1d7eeb8eb2518441d99c914e5fd18b68e2759743d212dfd8f00574a1de6da8"
  head "https://github.com/yarnpkg/yarn.git"

  bottle do
    cellar :any_skip_relocation
    sha256 "04d5fe5e5667d77b40a882a1bdbe08625bd52e0d228af7aa925455760bafd58f" => :sierra
    sha256 "291ad03475ea4770f357559dc9116309796bf1af83c13644cafcd00163283bce" => :el_capitan
    sha256 "84a717ce964d4ec5cd69ae6336a79db27fa7580cee1c978e33e310e4eb8e36a3" => :yosemite
  end

  depends_on "node"

  def install
    system "npm", "install", *Language::Node.std_npm_install_args(libexec)
    bin.install_symlink Dir["#{libexec}/bin/*"]
  end

  test do
    (testpath/"package.json").write('{"name": "test"}')
    system bin/"yarn", "add", "jquery"
  end
end

Run this
brew upgrade yarn