Homebrew formula for Habitus

habitus.rb

class Habitus < Formula
  desc "A standalone build flow tool for Docker"
  homepage "http://www.habitus.io"
  head "https://github.com/cloud66/habitus.git"

  depends_on "go" => :build

  def install
    contents = Dir["{*,.git,.gitignore}"]
    gopath = buildpath/"gopath"
    (gopath/"src/github.com/cloud66/habitus").install contents

    ENV["GOPATH"] = gopath
    ENV.prepend_create_path "PATH", gopath/"bin"

    cd gopath/"src/github.com/cloud66/habitus" do
      system "go build"
      bin.install "habitus"
    end
  end

  test do
    fork do
      exec "#{bin}/habitus", "--version"
    end
  end
end