Conditional Definitions

[Fr. Samuel Springuel]

I recently upgraded from 2.22 to 2.24 and have run into some problems with one 
of my tools.  The tool is set up to define some some stuff (in the example 
attached below I’ve narrowed it down to be just a color), but only if that 
thing is not already defined.  The reason for this is because the definitions 
are in included files.  There’s a master style file which defines everything 
and then a variant style file where only some things are defined (the things 
that are different from the master style file).  The master style file is 
included explicitly in the source files, while the variant style file is 
included automatically by lyluatex if certain conditions are met in the 
document, and that inclusion happens before the contents of the source file.  
This means I have to prevent a redefinition rather than exploit it.  I was 
doing this just fine in 2.22, but 2.24 complains about definition being wrapped 
in a conditional.  I believe this has to do with the switchover in Guile 
versions, but I don’t know enough about Guile to figure out how to fix it (and 
no, convert-ly does not help here).

Attached is my MWE.

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Fr. Samuel, OSB
(R. Padraic Springuel)
St. Anselm’s Abbey
4501 South Dakota Ave, NE
Washington, DC, 20017
202-269-2300
(c) 202-853-7036

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aster_test.ily
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