Hello Paolo, > Is there a way to make this snippet compatible with all LilyPond > versions starting from 2.19.84?
You could do something like this
```
requireVersion =
#(define-scheme-function (version then else)
(string? scheme? scheme?)
(define (list< x y)
(if (null? x)
#f
(cond ((< (car x) (car y)) #t)
((> (car x) (car y)) #f)
(else (list< (cdr x) (cdr y))))))
(let* ((split (string-split version #\.))
(nversion (map string->number split))
(tversion (ly:version)))
(if (list< tversion nversion)
else
then)))
{
\set Score.proportionalNotationDuration = \requireVersion "2.25.23" #1/32
#(ly:make-moment 1 32)
c' c' c'
}
```
to set a different value depending on the Lilypond version.
Cheers,
Valentin
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