[bug#27907] [PATCH] graph: Provide access to the package record in the emit

[Ludovic Courtès]

Roel Janssen <address@hidden> skribis:

> I would like to expand the Cypher back-end and in the long run add a
> SPARQL graph back-end to GNU Guix.  For this, I will need to have access
> to the package records inside the emit-* functions.
>
> This patch makes this change by essentially changing the "label"
> parameter of the emit-* functions passed as "(node-label head)" into a
> "node" parameter, passed as "head".
>
> The rest of the patch adapts the current emit-* functions to this
> change.
>
> I tested the Graphviz, D3js, and Cypher back-ends, and all seem to work
> as before.
>
> Is it OK to apply this change?

Sure, looks good to me!

Ludo’.