def METHOD_NAME(self, spec, prefix):
    options = self.make_options(spec)
    if "@4.5.1:" in spec:
        prefix_arg = "INSTALL_PREFIX={}".format(prefix)
    else:
        prefix_arg = "INSTALL_DIR={}".format(prefix.bin)
    with working_dir("squashfs-tools"):
        make("install", prefix_arg, *options)