Update min_recommended_version for eccodes

[zklaus]

What happened?

Version 1.6.0 added codes_bufr_key_is_coordinate in https://github.com/ecmwf/eccodes-python/commit/880855c00a1ec7da62d5c2d9af20fb94d36cfb39.

This was added to Eccodes only in version 2.31.0, c.f. ECC-1611.

Consequently, the min_recommended_version should be updated in https://github.com/ecmwf/eccodes-python/blob/66e7666b3cbc89cb60717741470c9a2061a5705b/gribapi/__init__.py#L17

With older versions installed, we get runtime linker errors such as

ImportError: /opt/conda/envs/esmvaltool/lib/python3.11/site-packages/gribapi/_bindings.cpython-311-x86_64-linux-gnu.so: undefined symbol: codes_bufr_key_is_coordinate

What are the steps to reproduce the bug?

• Install eccodes-python-1.6.0 with any version of eccodes<2.31.0 (>=2.21.0 according to min_recommended_version)
• import gribapi

Version

v1.6.0

Platform (OS and architecture)

Linux

Relevant log output

No response

Accompanying data

No response

Organisation

No response

[shahramn]

We do have some GitHub actions which use the ecCodes library as old as 2.27.0 and all the tests pass. No errors on import For example see https://github.com/ecmwf/eccodes-python/actions/runs/6235294400/job/16924240979

[zklaus]

Thanks for following up. Which test imports gribapi? I could not find any.

Note that it is the minimum recommended version for gribapi (after all, it is in gribapi/__init__.py) and that the error shows up when you do import gribapi (c.f. "[...] steps to reproduce [...]" above).

[shahramn]

OK I will update the minimum recommended version to 2.31.0 Many thanks