Follow up Copenhagen BIDS-Prov meeting

[cmaumet]

This issue is open to keep track of discussions / things to do following BIDS-derivatives meeting :

• We need an example in BIDS-Prov spec on how to include custom code for some of the steps
• The file-level provenance that we had in older version can be more intuitive when writing the provenance of a single file and should probably included back in the spec
  • Tentative examples from ephys are at: Defining derivatives in a chain bep021#8 (comment)
• Question could the BIDS-Prov file be in .prov.json and not .prov.jsonld to be simpler for the devs who know json (suggestion by Arnault)
• We should consider making it possible to use BIDS url as identifiers

[cmaumet]

• Dora, Stefan, Arnault, Robert, Camille discussed Prov in ephys