Conditionally skip an entire

[Roman Stawski]

Hi folks










Does anyone have any miracle solution ?


(N.B. I'm currently running "GNU LilyPond 2.27.2 (running Guile 3.0)")


Many thanks

I have a number of lilypond file which each contain several scores, call the scores A, B and C. Depending on a variable set when invoking lilypond I need to generate results which don't necessarily  contain the same scores. For instance a singer might only need A and B, But an instrumentalist might need A, B and C. Is there any way to write a condition at the top level of a lilypond file (the same level as a header or a score block) to conditionally skip or process an entire score. I can do this by with a condition _inside_ the score block to skip the music content, but then I get the message "programming error: system with empty extent".

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