Bad error message for bad mkOption call

[roberth]

Describe the bug

If I mess up the mkOption call, not even the eval trace shows which option contains the mistake.

Steps To Reproduce

Steps to reproduce the behavior:

See
https://hercules-ci.com/github/hercules-ci/flake.parts-website/jobs/154

I'm pretty sure I'm the one who messed up, but maybe next time it will be an error I don't recognize.

Expected behavior

mkOption error's show-trace contains the path to the option.

[roberth]

Update: I guess the trace does contain a file location, but that I'm not sure that will always make the location obvious. An option path may be more specific, and having both the location and the option both would be nice.