Hi All,

I'm looking for some advice, I maintain the GenVisR package, it is currently 
failing on malbec1-devel. I use the vdiffr package to perform visual test 
cases, essentially the package compares the SVG output to a predefined 
expectation and fails if an anomaly is detected. This worked perfectly until 
perhaps a month ago, given that the visual test-case fails only on malbec1 I 
suspect the issue is something small, perhaps malbec1 uses a different font 
library causing the SVG's to be significantly different.

At any rate I'm looking for any advice on how to:

1) determine what the difference is, normally I would run 
vdiffr::manage_cases() but obviously that is not possible with the automated 
build system. Is there a docker image available that corresponds exactly to 
malbec1?

2) Again I suspect that this is a minor issue given that everything is fine on 
the other two OS, but I'm trying to figure out the proper course of action to 
resolve this. I could add a skip_on_bioc() flag for all visual test-cases. I 
would rather not do that if there is a way to avoid it though.

Thanks for any advice!
Zach

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