Add the -l/--limit option to verdi group show

[sphuber]

Fixes #3855

[codecov]

Codecov Report

Merging #3857 into develop will decrease coverage by 0.01%.
The diff coverage is 83.33%.

@@             Coverage Diff             @@
##           develop    #3857      +/-   ##
===========================================
- Coverage    77.17%   77.16%   -0.02%     
===========================================
  Files          458      458              
  Lines        33770    33774       +4     
===========================================
- Hits         26063    26062       -1     
- Misses        7707     7712       +5

Flag	Coverage Δ
#django	69.2% <83.33%> (ø)	⬆️
#sqlalchemy	70.02% <83.33%> (-0.02%)	⬇️

Impacted Files	Coverage Δ
aiida/cmdline/commands/cmd_group.py	89.3% <83.33%> (+0.23%)	⬆️
aiida/orm/utils/log.py	76.66% <0%> (-16.67%)	⬇️

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[sphuber]

Can @CasperWA or @csadorf maybe explain why codecov reports that the coverage decreases? Why do these changes affect aiida.orm.utils.log at all?

[ltalirz]

thanks @sphuber

[csadorf]

@sphuber I am puzzled by that myself and already inquired about that as part of this test PR: #3850

[sphuber]

@sphuber I am puzzled by that myself and already inquired about that as part of this test PR: #3850

I see, thanks for the comment. If I understand your conclusion in that PR correctly, it means that this can happen "randomly" and there is no way to prevent this systematically? I guess that is also why the codecov actions are not yet marked as required for passing a PR, correct? I take it that will have to remain if the chance remains that it can fail arbitrarily, which would block an otherwise perfectly fine PR from being merged.

[csadorf]

@sphuber I don't think that this really happens randomly. At least I have not yet observed this behavior in other projects that used codecov. I presume that something went wrong during the initial setup and that this weird behavior will eventually go away. We should revisit in a few weeks if it doesn't.