Re: installing lilypond-mode for emacs on Linux

[David Wright]

On Thu 07 Apr 2022 at 22:36:54 (-0700), Paul Scott wrote:
> On 4/7/22 16:17, David Kastrup wrote:
> > Paul Scott <waterhorse@ultrasw.com> writes:
> > > On 4/7/22 15:08, David Kastrup wrote:
> > > > Paul Scott <waterhorse@ultrasw.com> writes:
> > > > > On 4/7/22 14:15, David Kastrup wrote:
> > > > > > Paul Scott <waterhorse@ultrasw.com> writes:
> > > > > > > On 4/7/22 13:02, David Kastrup wrote:
> > > > > > > > Paul Scott <waterhorse@ultrasw.com> writes:
> > > > > > > > 
> > > > > > > > > Greetings,
> > > > > > > > > 
> > > > > > > > > I've forgotten too much.  I see the instructions for 
> > > > > > > > > activating
> > > > > > > > > lilypond-mode and am not remembering enough to get it to work.
> > > > > > > > > 
> > > > > > > > > TIA for any help,
> > > > > > > > cd elisp
> > > > > > > > make
> > > > > > > > sudo make install
> > > > > > > I'm not finding a makefile.
> > > > > > Have you tried?
> > > > > Yes.  I've looked for many files like elisp and lilypond-mode in my
> > > > > attempts.
> > > > > >     There is GNUmakefile which will get picked up by, well,
> > > > > > GNU Make.
> > > > > I hadn't thought of GNUmakefile but according to updatedb and locate
> > > > > there are only two clearly unrelated GNUmakefiles on this computer.
> > > > Which begs the question: just what have you installed where and how with
> > > > regard to LilyPond?
> > > 
> > > I have Lily 2.22-2 and 2.23.6 installed.
> > Where and how?
> 
> 2.22.2: Debian install

I'm only running bullseye, whereas you appear to be running sid.
I can see that the package lilypond-data contains:

$ ls -l /etc/emacs/site-start.d/50lilypond-data.el 
-rw-r--r-- 1 root root 185 Feb  2  2021 
/etc/emacs/site-start.d/50lilypond-data.el

Do you have this file? It should set lilypond mode for .ly files.
Were they working already? If not, I can only suggest that something
in your ~/.emacs configuration is interfering with the file's action.

However, you may find that lilypond mode is not being set for .ily
files. If you are the only user, the easiest fix for that may be to add:

(setq auto-mode-alist
      (cons '("\\.ily$" . LilyPond-mode) auto-mode-alist))

to your ~/.emacs file (creating it if absent).

For systems with several users, open the file
/etc/emacs/site-start.d/50lilypond-data.el and duplicate
the second line, changing .ly to .ily (which has to be
done as root). On subsequent upgrades, you will need to
confirm that you want to keep your version of that file,
as it's a conffile.

> 2.23.6: .sh file from LilyPond web site.

Cheers,
David.