[bug#77072] [PATCH v1] channels: add transformer field

[Jakob Kirsch]

Hey everyone,
I've recently tried to declaratively apply my own patches to the upstream guix 
channel or channels in general but I found it very hard (aka impossible) to do 
that cleanly so I made this simple patch.

This patch adds a new "transformer" field to the channel record. That 
"transformer" is a lambda that is called right before applying the quirk 
patches with the checkout path being its only argument.

What do you think about my proposal?

v1-0001-channels-add-transformer-field.patch
Description: Text document