Update ecwam regression tests to use develop branch

[reuterbal]

No description provided.

[github-actions]

Documentation for this branch can be viewed at https://sites.ecmwf.int/docs/loki/335/index.html

[codecov]

Codecov Report

Attention: Patch coverage is 10.71429% with 25 lines in your changes missing coverage. Please review.

Project coverage is 95.31%. Comparing base (7ca9dd8) to head (97dad78).
Report is 5 commits behind head on main.

Files	Patch %	Lines
loki/transformations/tests/test_ecwam.py	10.71%	25 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #335   +/-   ##
=======================================
  Coverage   95.31%   95.31%           
=======================================
  Files         170      171    +1     
  Lines       36467    36548   +81     
=======================================
+ Hits        34759    34837   +78     
- Misses       1708     1711    +3     

Flag	Coverage Δ
lint_rules	96.39% <ø> (ø)
loki	95.30% <10.71%> (+<0.01%)	⬆️

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[reuterbal]

Thanks to @awnawab this should be ready now!

[mlange05]

Looks good to me, and indeed many thanks for figuring out all the nifty details @reuterbal and @awnawab . I left one small comment on the use of the default arch (is this intentional and safe?), but if someone can confirm that this is fine, we're GTG. 👍

[mlange05]

Just double-checking: Is relying on default arch safe here? @awnawab

[reuterbal]

My understanding is that implies no arch files are used, i.e., no specific toolchain.cmake and env.sh. Since none are required, this should be fine.

[awnawab]

Yes exactly, the ecwam CI also runs without any arch files and just relies on the default cmake/ecbuild flags plus those set by ecwam_compile_flags.cmake.

[awnawab]

Many thanks for this, apologies for not wrapping this up sooner myself, it was long overdue. I can now finally forget about that very old ecwam dev branch that we were previously using 😄