From mboxrd@z Thu Jan  1 00:00:00 1970
From: Thorsten Jolitz <tjolitz@gmail.com>
Subject: Re: where Babel looks for binaries?
Date: Sun, 17 Aug 2014 03:59:09 +0200
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Steven Arntson <steven@stevenarntson.com> writes:

> Thorsten Jolitz <tjolitz@gmail.com> writes:
>
>> Steven Arntson <steven@stevenarntson.com> writes:
>>
>>>> I would say try the above, i.e. restore ob-lilypond.el and set the
>>>> variable in you init file. Alternatively you could delete the
>>>> ob-lilypond.elc and the do M-x byte-compile-file on the modified
>>>> ob-lilypond.el, but I would not recommend mess around in libraries for
>>>> customizations. 
>>>
>>> I reverted the change to ob-lilypond.el and did as you suggested, adding
>>>
>>> (setq ly-nix-ly-path "/usr/local/lilypond")
>>>
>>> It's now looking in the right place, but still won't tangle the file
>>> when I run ly-tangle. The message in the minibuffer is:
>>>
>>> ly-compile-lilyfile: Searching for program: resource temporarily
>>> unavailable, /usr/local/lilypond
>>>
>>> The use of "temporarily" is certainly intriguing! I quit out of emacs
>>> and restarted, but am still getting the message.
>>
>> hmm ... does it work without emacs?
>> did you try to use lilypond from the commandline?
>
> Yes, it's working from there. I'm befuddled. I tried changing the path
> to "/usr/local/lilypond/bin" and also "/usr/local/lilypond/usr/bin"
> thinking maybe the system needed a little more guidance, but neither of
> these worked.

what if you simply move the liliypond binary to where ob-lilypond
expects it or set a symlink to "/usr/bin/lilypond"?

-- 
cheers,
Thorsten