Starting from py3.14 pkgutil.get_loader was removed(*) and so pygolang
can not even start building:

    (py314.venv) pygolang$ python setup.py build_ext -i
    Traceback (most recent call last):
      File "/home/kirr/src/tools/go/pygolang-master/setup.py", line 226, in <module>
        x_dsos      = [DSO('golang.runtime.libgolang',
                       ~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                            ['golang/runtime/libgolang.cpp',
                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        ...<33 lines>...
                            define_macros   = [('BUILDING_LIBGOLANG', None)],
                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                            soversion       = '0.1'),
                            ^^^^^^^^^^^^^^^^^^^^^^^^
      File "/home/kirr/src/tools/go/pygolang-master/golang/pyx/build.py", line 235, in DSO
        _, kw = _with_build_defaults(name, kw)
      ...