def METHOD_NAME(self):
    # Fix detection of tcl/tk
    tklib_build = FileFilter(join_path("lib_pypy", "_tkinter", "tklib_build.py"))
    if "+tkinter" in self.spec:
        incs = self.spec["tcl"].headers + self.spec["tk"].headers
        libs = self.spec["tcl"].libs + self.spec["tk"].libs
        tklib_build.filter("incdirs = .*", f"incdirs = {incs.directories}")
        tklib_build.filter("linklibs = .*", f"linklibs = {libs.names}")
        tklib_build.filter("libdirs = .*", f"libdirs = {libs.directories}")