def print_sysinfo():
    """Print information about relevant dependencies"""
    #get version information
    for line in open('glue/version.py'):
        if (line.startswith('__version__')):
            exec(line.strip())

    #Print external package information
    print_line()
    print_raw("BUILDING GLUE")
    print_status('glue', __version__)
    print_status('python', sys.version)
    print_status('platform', sys.platform)
    if sys.platform == 'win32':
        print_status('Windows version', sys.getwindowsversion())

    print_raw("")
    print_raw("REQUIRED DEPENDENCIES")
    if not check_for_numpy('1.4'):
        sys.exit(1)


    print_raw("")
    print_raw("RECOMMENDED DEPENDENCIES")
    check_for_matplotlib()
    check_for_qt4()
    check_for_scipy()

    print_raw("")
    print_raw("OPTIONAL DEPENDENCIES : GENERAL")
    check_for_ipython()
    check_for_pil()

    print_raw("")
    print_raw("OPTIONAL DEPENDENCIES : ASTRONOMY")
    check_for_astropy()
    check_for_atpy()
    check_for_aplpy()

    print_raw("")
    print_raw("OPTIONAL DEPENDENCIES : TESTING")
    check_for_pytest()
    check_for_mock()
    print_line()

    # These are distutils.setup parameters that the various packages add
    # things to.
    packages = []
    namespace_packages = []
    py_modules = []
    ext_modules = []
    package_data = {}
    package_dir = {'': 'lib'}
    install_requires = []
    setup_requires = []
    tests_require = []
    default_backend = None

    # Go through all of the packages and figure out which ones we are
    # going to build/install.
    print_line()
    print_raw("Edit setup.cfg to change the build options")

    required_failed = []
    good_packages = []
    for package in mpl_packages:
        if isinstance(package, str):
            print_raw('')
            print_raw(package.upper())
        else:
            try:
                result = package.check()
                if result is not None:
                    message = 'yes [%s]' % result
                    print_status(package.name, message)
            except setupext.CheckFailed as e: