Update min_recommended_version for eccodes

[Klaus Zimmermann]

What happened?

Version 1.6.0 added codes_bufr_key_is_coordinate in 880855c.

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

Consequently, the min_recommended_version should be updated in

eccodes-python/gribapi/__init__.py

Line 17 in 66e7666

 min_recommended_version_str = "2.21.0" 

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

[Klaus Zimmermann]

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