I use codecov to monitor quadpy (https://codecov.io/gh/nschloe/quadpy/).
Everything seems to be going well: The reports are uploaded and correctly reported, the graphs are showing nicely etc. Unfortunately, when clicking on any file to get line-by-line details, I’m getting the error message
Is the path quadpy/_cli.py a relative path in your repository?
https://codecov.io/gh/nschloe/quadpy/src/master/quadpy/_cli.py
The answer is: Yes, it is a relative path in the repo.
Looks like a bug.