Return a list of supported tags for each version specified in
    `versions`.

    :param versions: a list of string versions, of the form ["33", "32"],
        or None. The first version will be assumed to support our ABI.
    :param platform: specify the exact platform you want valid
        tags for, or None. If None, use the local system platform.
    :param impl: specify the exact implementation you want valid
        tags for, or None. If None, use the local interpreter impl.
    :param abi: specify the exact abi you want valid
        tags for, or None. If None, use the local interpreter abi.

def get_supported(versions=None, noarch=False, platform=None,
                  impl=None, abi=None):
    """Return a list of supported tags for each version specified in
    `versions`.

    :param versions: a list of string versions, of the form ["33", "32"],
        or None. The first version will be assumed to support our ABI.
    :param platform: specify the exact platform you want valid
        tags for, or None. If None, use the local system platform.
    :param impl: specify the exact implementation you want valid
        tags for, or None. If None, use the local interpreter impl.
    :param abi: specify the exact abi you want valid
        tags for, or None. If None, use the local interpreter abi.
    """
    supported = []

    # Versions must be given with respect to the preference
    if versions is None:
        versions = []
        version_info = get_impl_version_info()
        major = version_info[:-1]
        # Support all previous minor Python versions.
        for minor in range(version_info[-1], -1, -1):
            versions.append(''.join(map(str, major + (minor,))))

    impl = impl or get_abbr_impl()

    abis = []

    abi = abi or get_abi_tag()
    if abi:
        abis[0:0] = [abi]

    abi3s = set()
    import imp
    for suffix in imp.get_suffixes():
        if suffix[0].startswith('.abi'):
            abi3s.add(suffix[0].split('.', 2)[1])

    abis.extend(sorted(list(abi3s)))

    abis.append('none')

    if not noarch:
        arch = platform or get_platform()
        if arch.startswith('macosx'):
            # support macosx-10.6-intel on macosx-10.9-x86_64
            match = _osx_arch_pat.match(arch)
            if match:
                name, major, minor, actual_arch = match.groups()
                tpl = '{}_{}_%i_%s'.format(name, major)
                arches = []
                for m in reversed(range(int(minor) + 1)):
                    for a in get_darwin_arches(int(major), m, actual_arch):
                        arches.append(tpl % (m, a))
            else:
                # arch pattern didn't match (?!)
                arches = [arch]
        elif platform is None and is_manylinux1_compatible():
            arches = [arch.replace('linux', 'manylinux1'), arch]
        else:
            arches = [arch]

        # Current version, current API (built specifically for our Python):
        for abi in abis:
            for arch in arches:
                supported.append(('%s%s' % (impl, versions[0]), abi, arch))

        # abi3 modules compatible with older version of Python
        for version in versions[1:]:
            # abi3 was introduced in Python 3.2
            if version in {'31', '30'}:
                break
            for abi in abi3s:   # empty set if not Python 3
                for arch in arches:
                    supported.append(("%s%s" % (impl, version), abi, arch))

        # Has binaries, does not use the Python API:
        for arch in arches:
            supported.append(('py%s' % (versions[0][0]), 'none', arch))

    # No abi / arch, but requires our implementation:
    supported.append(('%s%s' % (impl, versions[0]), 'none', 'any'))
    # Tagged specifically as being cross-version compatible
    # (with just the major version specified)
    supported.append(('%s%s' % (impl, versions[0][0]), 'none', 'any'))

    # No abi / arch, generic Python
    for i, version in enumerate(versions):
        supported.append(('py%s' % (version,), 'none', 'any'))
        if i == 0:
            supported.append(('py%s' % (version[0]), 'none', 'any'))

    return supported