"Error: Could not set character size"

[Attila Lendvai]

...when trying to build a guix checkout.

to reproduce:

$ make doc/images/service-graph.png
  DOT      doc/images/service-graph.png
Error: Could not set character size
[error message repeated 12 more times]

this seems to be an error coming from graphviz. this is all i could find 
online, which is not very useful:

https://gitlab.com/graphviz/graphviz/-/issues/863

maybe this commit a few days ago changed something? looks innocent, though:

https://git.savannah.gnu.org/cgit/guix.git/commit/?id=4099b12f9f4561d0494c7765b484b53d9073b394

any hints?

-- 
• attila lendvai
• PGP: 963F 5D5F 45C7 DFCD 0A39
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