def __init__(self, package, version):
        """Construct a new requirement.

        :param package: the package name.
        :param version: a semver compatible version specification.
        """
        self.package = package
        self.version = version
        if self.version and not re.match(r"[<=>~]", version[:2]):
            self.version = "=={}".format(self.version)
def draw(self, context):
        layout = self.layout

        split = layout.split()
        row = split.row()
        row.label("")
        row = split.row()
        row.label("Interaction:")

        text = bpy.path.display_name(context.window_manager.keyconfigs.active.name)
        if not text:
            text = "Blender (default)"
        row.menu("USERPREF_MT_appconfigs", text=text)