PyTables: Cannot import pytables on windows, python 3.8

The tables-3.7.0 wheels for Windows on PyPI have the following code added to __init__.py:

""""""  # start delvewheel patch
def _delvewheel_init_patch_0_0_17():
    import os
    import sys
    libs_dir = os.path.abspath(os.path.join(os.path.dirname(__file__), os.pardir, 'tables.libs'))
    if sys.version_info[:2] >= (3, 8):
        if os.path.exists(os.path.join(sys.base_prefix, 'conda-meta')):
            # backup the state of the environment variable CONDA_DLL_SEARCH_MODIFICATION_ENABLE
            conda_dll_search_modification_enable = os.environ.get("CONDA_DLL_SEARCH_MODIFICATION_ENABLE")
            os.environ['CONDA_DLL_SEARCH_MODIFICATION_ENABLE']='1'

        os.add_dll_directory(libs_dir)

        if os.path.exists(os.path.join(sys.base_prefix, 'conda-meta')):
            # restore the state of the environment variable CONDA_DLL_SEARCH_MODIFICATION_ENABLE
            if conda_dll_search_modification_enable is None:
                os.environ.pop("CONDA_DLL_SEARCH_MODIFICATION_ENABLE", None)
            else:
                os.environ["CONDA_DLL_SEARCH_MODIFICATION_ENABLE"] = conda_dll_search_modification_enable
    else:
        from ctypes import WinDLL
        with open(os.path.join(libs_dir, '.load-order-tables-3.7.0')) as file:
            load_order = file.read().split()
        for lib in load_order:
            WinDLL(os.path.join(libs_dir, lib))


_delvewheel_init_patch_0_0_17()
del _delvewheel_init_patch_0_0_17
# end delvewheel patch

Apparently this does not work as expected using miniconda:

Python 3.8.10 (default, May 19 2021, 13:12:57) [MSC v.1916 64 bit (AMD64)] :: Anaconda, Inc. on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import tables
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "...\tables\__init__.py", line 45, in <module>
    from .utilsextension import get_hdf5_version as _get_hdf5_version
ImportError: DLL load failed while importing utilsextension: The specified module could not be found.

Adding from . import utilsextension right after os.add_dll_directory(libs_dir) works (the bzip2.dll not found isue is already fixed in master):

""""""  # start delvewheel patch
def _delvewheel_init_patch_0_0_17():
    import os
    import sys
    libs_dir = os.path.abspath(os.path.join(os.path.dirname(__file__), os.pardir, 'tables.libs'))
    if sys.version_info[:2] >= (3, 8):
        if os.path.exists(os.path.join(sys.base_prefix, 'conda-meta')):
            # backup the state of the environment variable CONDA_DLL_SEARCH_MODIFICATION_ENABLE
            conda_dll_search_modification_enable = os.environ.get("CONDA_DLL_SEARCH_MODIFICATION_ENABLE")
            os.environ['CONDA_DLL_SEARCH_MODIFICATION_ENABLE']='1'

        os.add_dll_directory(libs_dir)
        from . import utilsextension  # <-- added

        if os.path.exists(os.path.join(sys.base_prefix, 'conda-meta')):
            # restore the state of the environment variable CONDA_DLL_SEARCH_MODIFICATION_ENABLE
            if conda_dll_search_modification_enable is None:
                os.environ.pop("CONDA_DLL_SEARCH_MODIFICATION_ENABLE", None)
            else:
                os.environ["CONDA_DLL_SEARCH_MODIFICATION_ENABLE"] = conda_dll_search_modification_enable
    else:
        from ctypes import WinDLL
        with open(os.path.join(libs_dir, '.load-order-tables-3.7.0')) as file:
            load_order = file.read().split()
        for lib in load_order:
            WinDLL(os.path.join(libs_dir, lib))


_delvewheel_init_patch_0_0_17()
del _delvewheel_init_patch_0_0_17
# end delvewheel patch

Python 3.8.10 (default, May 19 2021, 13:12:57) [MSC v.1916 64 bit (AMD64)] :: Anaconda, Inc. on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import tables
>>> tables.test()
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
PyTables version:    3.7.0
HDF5 version:        1.12.0
NumPy version:       1.22.0
Numexpr version:     2.8.1 (not using Intel's VML/MKL)
Zlib version:        1.2.11 (in Python interpreter)
Blosc version:       1.21.0 (2020-12-22)
Blosc compressors:   blosclz (2.3.0), lz4 (1.9.3), lz4hc (1.9.3), zlib (1.2.11), zstd (1.4.5)
Blosc filters:       shuffle, bitshuffle
Python version:      3.8.10 (default, May 19 2021, 13:12:57) [MSC v.1916 64 bit (AMD64)]
Platform:            Windows-10-10.0.19044-SP0
Byte-ordering:       little
Detected cores:      12
Default encoding:    utf-8
Default FS encoding: utf-8
Default locale:      (en_US, cp1252)
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Performing only a light (yet comprehensive) subset of the test suite.
If you want a more complete test, try passing the --heavy flag to this script
(or set the 'heavy' parameter in case you are using tables.test() call).
The whole suite will take more than 4 hours to complete on a relatively
modern CPU and around 512 MB of main memory.
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
tables\filters.py:305: FiltersWarning: compression library ``bzip2`` is not available; using ``zlib`` instead
  warnings.warn("compression library ``%s`` is not available; "
tables\filters.py:305: FiltersWarning: compression library ``lzo`` is not available; using ``zlib`` instead
  warnings.warn("compression library ``%s`` is not available; "
<snip>

Output from pip install tables

...
Collecting tables<4.0.0,>=3.6.0
  Downloading tables-3.7.0-cp38-cp38-win_amd64.whl (6.9 MB)
...