Re: Moving from lilypond 2.18 to 2.19

[David Kastrup]

Matt Wallis <address@hidden> writes:

> Hi,
>
> Having seen that many here are using 2.19, I thought I'd have a go. I
> use both Mac/OS and Linux, but what I'm describing here is for Mac/OS.
>
> I install lilypond via macports which provides two packages:
>
>    lilypond @2.18.2_5 (textproc)
>    lilypond-devel @2.19.80 (textproc)
>
> So, I deactivated lilypond and activated lilypond-devel in order to
> use 2.19.
>
> My first test did not work:
>
>    bombyx:~/Music/Matt/Song2017-09-28$ make -B
>    lilypond -drelative-includes -I/Users/matt/Music/mattlib/ PianoScore.ly
>    GNU LilyPond 2.19.80
>    Processing `PianoScore.ly'
>    Parsing.../opt/local/share/lilypond/2.19.80/scm/lily-library.scm:375:14:
>    In procedure ly:add-context-mod in expression (ly:add-context-mod
>    mods (list # #)):
>    /opt/local/share/lilypond/2.19.80/scm/lily-library.scm:375:14: Wrong
>    type argument in position 1 (expecting Context_mod): #f
>    make: *** [PianoScore.pdf] Error 1
>
> There are no error messages referring to my own lilypond source files,
> which makes me wonder what's going on here.

Your source is triggering an error in the library.  Have you called
convert-ly -ed on your source in order to upgrade its syntax?

> I understand that the lilypond-devel package is not intended to be
> stable, and so bugs may appear. Is that what's happening here? If not,
> I'm happy to try to create a small example that exposes this error.

First try convert-ly.

> When I tried lilypond 2.19 on a different score, I had the above
> error, but also some relating to my own .ly files. I guess there are
> changes that I need to make to my source (even though I have `\version
> "2.18.2"` in the source). Is that right? Is there a guide to these
> changes?

<http://lilypond.org/doc/v2.19/Documentation/usage/invoking-convert_002dly.en.html>

-- 
David Kastrup