wpt.fyi

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On https://wpt.fyi/compat2021?feature=position-sticky, clicking a point in the graph will show a "show browser changelog" link. It would be very useful to also have a list to the wpt.fyi run which is being that point in the graph, and maybe a diff against the previous run.

This would make it easier to figure out why regressions have happened, as in the What is causing the score reduction for position:sticky? thread.

@stephenmcgruer do you think this would be easy to fix?

Annoyingly not trivial, because I dropped the sha from the new unified csv file.

You'd need to:

1. Add it to the csv file generated here: https://github.com/Ecosystem-Infra/wpt-results-analysis/blob/main/compat-2021/main.js#L390
2. Create a sha list here, similar to browserVersions - https://github.com/web-platform-tests/wpt.fyi/blob/main/webapp/components/compat-2021.js#L87
3. Modify this tooltip action to use the new shas list - https://github.com/web-platform-tests/wpt.fyi/blob/main/webapp/components/compat-2021.js#L682

The most annoying bit will be not breaking wpt.fyi when you add the SHAs to the csv file (yay csv files... wish I'd used JSON?)

Thanks Stephen! Seems doable but not trivial then :)