old_contents: {
  	'repo_type' : 'archive',
  	'download_locations' : [
  		{ 'url' : 'https://sourceware.org/pub/bzip2/bzip2-1.0.8.tar.gz', 'hashes' : [ { 'type' : 'sha256', 'sum' : 'ab5a03176ee106d3f0fa90e381da478ddae405918153cca248e682cd0c4a2269' }, ], },
  		{ 'url' : 'https://fossies.org/linux/misc/bzip2-1.0.8.tar.gz', 'hashes' : [ { 'type' : 'sha256', 'sum' : 'ab5a03176ee106d3f0fa90e381da478ddae405918153cca248e682cd0c4a2269' }, ], },
  	],
  	'patches' : [
  		('bzip2/bzip2-1.0.6-gcc8.patch', '-p0'),
  	],
  	'needs_configure' : False,
  	'needs_make' : True,
  	'needs_make_install' : False,
  	'build_options' : '{make_prefix_options} libbz2.a bzip2 bzip2recover install',
  	'_info' : { 'version' : '1.0.6', 'fancy_name' : 'BZip2 (library)' },
  }
new_contents: {
  	'repo_type' : 'archive',
  	'download_locations' : [
  		{ 'url' : 'https://sourceware.org/pub/bzip2/bzip2-1.0.8.tar.gz', 'hashes' : [ { 'type' : 'sha256', 'sum' : 'ab5a03176ee106d3f0fa90e381da478ddae405918153cca248e682cd0c4a2269' }, ], },
  		{ 'url' : 'https://fossies.org/linux/misc/bzip2-1.0.8.tar.gz', 'hashes' : [ { 'type' : 'sha256', 'sum' : 'ab5a03176ee106d3f0fa90e381da478ddae405918153cca248e682cd0c4a2269' }, ], },
  	],
  	'patches' : [
  		('bzip2/bzip2-1.0.6-gcc8.patch', '-p0'),
  	],
  	'needs_configure' : False,
  	'needs_make' : True,
  	'needs_make_install' : False,
  	'build_options' : '{make_prefix_options} libbz2.a bzip2 bzip2recover install',
  
  	'update_check' : { 'url' : 'ftp://sourceware.org/pub/bzip2/', 'type' : 'ftpindex', 'regex' : r'bzip2-(?P<version_num>[\d.]+)\.tar\.gz' },
  	'_info' : { 'version' : '1.0.8', 'fancy_name' : 'BZip2 (library)' },
  }
subject: add version check