goto definition for data-dependencies jumps to dummy source files

[cocreature]

I don’t think you can actually jump to the real sources but not jumping anywhere would honestly be better because jumping to the dummy source files just produces a bunch of errors in vscode which is clearly not great.

[akrmn]

afaict the sources are part of the .dar, so it might be possible to hack ghcide to jump to the (previously extracted to a specially marked folder, to be excluded from the main .dar) sources when it detects a package is a data-dependency

[basvangijzel-DA]

Being tackled as part of #17574