old_contents: from spack import *
  
  class Libxcb(Package):
      """The X protocol C-language Binding (XCB) is a replacement 
      for Xlib featuring a small footprint, latency hiding, direct 
      access to the protocol, improved threading support, and 
      extensibility."""
  
      homepage = "http://xcb.freedesktop.org/"
      url      = "http://xcb.freedesktop.org/dist/libxcb-1.11.tar.gz"
  
      version('1.11', '1698dd837d7e6e94d029dbe8b3a82deb')
      version('1.11.1', '118623c15a96b08622603a71d8789bf3')
      depends_on("python")
      depends_on("xcb-proto")
  
      def install(self, spec, prefix):
          configure("--prefix=%s" % prefix)
  
          make()
          make("install")
  
new_contents: from spack import *
  
  class Libxcb(Package):
      """The X protocol C-language Binding (XCB) is a replacement
      for Xlib featuring a small footprint, latency hiding, direct
      access to the protocol, improved threading support, and
      extensibility."""
  
      homepage = "http://xcb.freedesktop.org/"
      url      = "http://xcb.freedesktop.org/dist/libxcb-1.11.tar.gz"
  
      version('1.11', '1698dd837d7e6e94d029dbe8b3a82deb')
      version('1.11.1', '118623c15a96b08622603a71d8789bf3')
      depends_on("python")
      depends_on("xcb-proto")
  
      def patch(self):
          filter_file('typedef struct xcb_auth_info_t {', 'typedef struct {', 'src/xcb.h')
  
  
      def install(self, spec, prefix):
          configure("--prefix=%s" % prefix)
  
          make()
          make("install")
  
subject: Make libxcb compile with gcc 4.9.