class Parallel < Formula
  desc "Shell command parallelization utility"
  homepage "https://savannah.gnu.org/projects/parallel/"
  url "https://ftp.gnu.org/gnu/parallel/parallel-20190122.tar.bz2"
  mirror "https://ftpmirror.gnu.org/parallel/parallel-20190122.tar.bz2"
  sha256 "ae735f201a8ceeff2ace48ff779bda9d19846e629bcc02ea7c8768a42394190c"
  head "https://git.savannah.gnu.org/git/parallel.git"

  bottle do
    cellar :any_skip_relocation
    sha256 "659c489d30d715464dce6286b0bafe653abed33649461fa3565bc3c67e370991" => :mojave
    sha256 "d0eab7c4549dba11d3916384106d5c7fc8d230fdb0555b458bfa8c07b99dd612" => :high_sierra
    sha256 "d0eab7c4549dba11d3916384106d5c7fc8d230fdb0555b458bfa8c07b99dd612" => :sierra
  end

  if Tab.for_name("moreutils").with?("parallel")
    conflicts_with "moreutils",
      :because => "both install a `parallel` executable."
  end

  def install
    system "./configure", "--prefix=#{prefix}"
    system "make", "install"
  end

  test do
    assert_equal "test\ntest\n",
                 shell_output("#{bin}/parallel --will-cite echo ::: test test")
  end
end