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

[Roel Janssen]

Ludovic Courtès writes:

> 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’.

Thanks! I pushed this patch.

Kind regards,
Roel Janssen