Install Varnish-3.0.2 on OSX with homebrew

varnish3.rb

require 'formula'                                                                                                                                                                              
 
class Varnish3 <Formula 
  url 'http://repo.varnish-cache.org/source/varnish-3.0.2.tar.gz' 
  homepage 'http://www.varnish-cache.org/' 
  md5 'c8eae0aabbe66b6daabdf3a1f58cd47a' 
 
  depends_on 'pkg-config' => :build 
  depends_on 'pcre' => :build 

  # needs 
  skip_clean :all 
 
  def install 
    # http://www.varnish-cache.org/trac/wiki/Installation 
    # system "./autogen.sh" 
    system "./configure", "--enable-debugging-symbols", 
                          "--enable-developer-warnings", 
                          "--enable-dependency-tracking", 
                          "--disable-dependency-tracking", 
                          "--prefix=#{prefix}", 
                          "--localstatedir=#{var}" 
    system "make" 
    system "make install" 
    (var+'varnish3').mkpath 

    (prefix+'org.varnish-cache.varnishd.plist').write startup_plist
    (prefix+'org.varnish-cache.varnishd.plist').chmod 0644
  end

  def startup_plist; <<-EOPLIST.undent
      <?xml version="1.0" encoding="UTF-8"?>
      <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
      <plist version="1.0">
      <dict>
        <key>Label</key>
        <string>org.varnish-cache.varnishd</string>
        <key>ProgramArguments</key>
        <array>
          <string>/usr/local/sbin/varnishd</string>
          <string>-f</string>
          <string>/path/to/varnish.vcl</string>
          <string>-s</string>
          <string>malloc,1G</string>
          <string>-T</string>
          <string>127.0.0.1:2000</string>
          <string>-a</string>
          <string>0.0.0.0:80</string>
        </array>
        <key>KeepAlive</key>
        <true/>
        <key>RunAtLoad</key>
        <true/>
        <key>WorkingDirectory</key>
        <string>/usr/local/sbin</string>
        <key>StandardErrorPath</key>
        <string>/var/log/varnish.log</string>
        <key>StandardOutPath</key>
        <string>/var/log/varnish.log</string>
      </dict>
      </plist>
    EOPLIST
  end
end 

md5 is now unsupported, so you need to comment it out or replace it with sha256.

Also brew link doesn't symlink varnishd for some reason.

Since the varnish repo link has changed, this script should work
https://gist.githubusercontent.com/dhruvbalhara/022fbf19ab5b94cf80a885a4df9cafaa/raw/da38a6a0c6fc1849abd6c7afab089b09bba5db97/varnish3.rb