On Sat, 2021-03-27 at 20:01 -0400, Mark H Weaver wrote:
> [...]
> Maxime wrote:
> > What does ‘guix refresh --list-dependent imagemagick@6.9.11-48’
> > output now?

> When I last checked, it reported on the order of 2400 dependent package
> rebuilds.

I should have written imagemagick@6.9.12-4 here.

> > If it there are many dependent packages, could some
> > of them use imagemagick/stable, dblatex/stable or gtk-doc/stable
> > as well?
> 
> Yes, that's exactly the purpose of this patch set.  Although at present,
> the only user of 'imagemagick/stable' is 'dblatex/stable', and the only
> user of 'dblatex/stable' is 'gtk-doc/stable'.

You missed a few packages:
in gnu/packages/mate.scm: search for "gtk-doc".
Also, the (gnu packages imagemagick) import seems
unused.

Looking at the package graph, many packages depend on imagemagick
through python-sphinx, so it may be worthwile to define a
python-sphinx/stable and use it instead of python-sphinx in the
native-inputs.

I suggest
 guix graph --type=reverse-package imagemagick@6.9.12-4 | dot -Tpdf > a.pdf

to find out if there are more uses for imagemagick/stable.

Greetings,
Maxime.