Hi Jocelyn,
The unstable versions have occasionally been heavily used, but I'm not
convinced Hacklily is the right tool for using unstable Lilypond
versions. If anyone has appreciated Hacklily with unstable versions,
I'd love to understand why.
I think there are multiple reasons:
a) "Unstable" versions are, in fact, very stable in LilyPond - they
don't usually crash more often than a 'stable' version. The instability
only means that new features are not guaranteed to remain unchanged.
b) "Unstable" versions are released quite frequently and sometimes
contain all sorts of cool new features. For instance, in
https://lilypond.org/doc/v2.27/Documentation/changes/rhythm-improvements
I find \beamBreak, a personal favourite of mine that I couldn't get
finished in time for the 2.26 cycle. For some music, I wouldn't want to
miss it today.
c) "Stable" versions are released quite infrequently, and thus, users
who only use stable versions sometimes have to wait very long until they
can use all those great new features mentioned in b).
So: If it's possible for you to support using unstable versions in
Hacklily, that would be terrific. It's a great project, many thanks for
that!
Lukas