No binaries for pip install on aarch64

[sgofferj]

What happened?

I'm building a docker container for aarch64. In the build I call pip install eccodes cfgrib. The python packages are installed but python -m cfgrib selfcheck fail with RuntimeError: Cannot find the ecCodes library. On detailed investigation I cannot find any libeccodes binaries anywhere.

What are the steps to reproduce the bug?

Try to pip install eccodes on an aarch64 system

Version

2.38

Platform (OS and architecture)

Debian Bookworm (Linux 5.4.17-2136.324.5.3.el8uek.aarch64 #2 SMP Tue Oct 10 16:49:45 PDT 2023 aarch64 GNU/Linux)

Relevant log output

Traceback (most recent call last):
  File "<frozen runpy>", line 189, in _run_module_as_main
  File "<frozen runpy>", line 148, in _get_module_details
  File "<frozen runpy>", line 112, in _get_module_details
  File "/usr/local/lib/python3.12/site-packages/cfgrib/__init__.py", line 20, in <module>
    from .cfmessage import COMPUTED_KEYS
  File "/usr/local/lib/python3.12/site-packages/cfgrib/cfmessage.py", line 29, in <module>
    from . import abc, messages
  File "/usr/local/lib/python3.12/site-packages/cfgrib/messages.py", line 28, in <module>
    import eccodes  # type: ignore
    ^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/eccodes/__init__.py", line 13, in <module>
    from .eccodes import *  # noqa
    ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/eccodes/eccodes.py", line 12, in <module>
    from gribapi import (
  File "/usr/local/lib/python3.12/site-packages/gribapi/__init__.py", line 13, in <module>
    from .gribapi import *  # noqa
    ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/gribapi/gribapi.py", line 34, in <module>
    from gribapi.errors import GribInternalError
  File "/usr/local/lib/python3.12/site-packages/gribapi/errors.py", line 16, in <module>
    from .bindings import ENC, ffi, lib
  File "/usr/local/lib/python3.12/site-packages/gribapi/bindings.py", line 105, in <module>
    raise RuntimeError("Cannot find the ecCodes library")
RuntimeError: Cannot find the ecCodes library

Accompanying data

No response

Organisation

No response

[sgofferj]

So, during the docker build, pip does download a wheel
Downloading eccodes-2.38.0-py3-none-any.whl (43 kB)

It builds the wheels for cartopy and findlibs (but not eccodes) and then reports the install finished

Building wheels for collected packages: cartopy, findlibs

[...]

Installing collected packages: pytz, findlibs, appdirs, urllib3, tzdata,
typing-extensions, traitlets, six, pyshp, pyparsing, pycparser,
platformdirs, pillow, packaging, numpy, kiwisolver, idna, fonttools,
cycler, click, charset-normalizer, certifi, attrs, shapely, scipy, requests,
python-dateutil, pyproj, flexparser, flexcache, contourpy, cffi,
pooch, pint, pandas, matplotlib, eccodes, xarray, cfgrib, cartopy, metpy