Overriding sources with slashy systems

[lukego]

Is there an easy way to override the source of a Lisp package when it includes many sub-packages?

For example I'd like to replace the source to mcclim but we have many derivations (mcclim, mcclim-bezier, ...) and they each have a separate src attribute that references an external url/sha256. The best option I can think of is to override all of those derivations together.

It might be neat though if the sources themselves were a named derivation that could be overridden...? Or what's the least-bad way to do it today? :)

[Uthar]

I would do it like you said, right now. There is a possibility to generate such source tarball derivations, but it's not done currently.