add --migrate-pytest option

[mirpedrol]

PR checklist

• This comment contains a description of changes (with reason)
• CHANGELOG.md is updated
• If you've fixed a bug or added code that should be tested, add tests!
• Documentation in docs is updated

[codecov]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (a91d411) 74.88% compared to head (e895e0c) 75.02%.

❗ Current head e895e0c differs from pull request most recent head bda4601. Consider uploading reports for the commit bda4601 to get more accurate results

Files	Patch %	Lines
nf_core/__main__.py	75.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              dev    #2549      +/-   ##
==========================================
+ Coverage   74.88%   75.02%   +0.14%     
==========================================
  Files          85       85              
  Lines        9222     9271      +49     
==========================================
+ Hits         6906     6956      +50     
+ Misses       2316     2315       -1     

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[mashehu]

Very nice!

[mashehu]

can we use the Syntax function from rich to add syntax highlighting?

[mirpedrol]

We are already using rich Logging. Not the best highlighting Nextflow but strings and functions are highlighted:

[mashehu]

hmm, can we make it somehow easier to copy this text? e.g. add it to the pasteboard?

[mirpedrol]

We would need to add a new library or take into account different OS.
Also, the important parts to copy over are only the input declarations. I'm not sure if it's worth it copying the whole file to the clipboard.
The current default is to not print the content of this file and not delete it. Do you think this is easier?