Re: Questions about emacs-snapshot (and also a small patch)
> Do `<f1> v load-path RET C-x o C-s local' and see if there's any match
> for you. There isn't for me, and Trent Buck reported the same thing
> on IRC a while ago.
> As you'll know, Debian Emacs Policy requires that every Emacs
> flavor have the following entries in `load-path' (in this order):
> This part of Policy is enforced, in a way, by the function
> `debian-pkg-add-load-path-item' (in `debian-startup.el'):
> (if (not last-local-pos)
> (error "No /usr/local/ prefixed paths in load-path"))
> This error is normally not very loud, even if the condition occurs,
> because of how the package initialization files (which are the ones
> that will call `debian-pkg-add-load-path-item') are loaded by the
> function `debian-run-directories' in the same file:
> (condition-case ()
> (load file nil)
> (message "Error while loading %s" file))
> (That is, all errors are suppressed and messages are printed instead.)
> While the errors aren't loud, they do prevent packages from
> being loaded.
I think I've managed to work around this by adding a file called
/etc/emacs-snapshot/site-start.d, with the following contents:
(add-to-list 'load-path "/usr/share/emacs/site-lisp")
(add-to-list 'load-path "/usr/share/emacs/emacs-snapshot/site-lisp")
(add-to-list 'load-path "/usr/local/share/emacs/site-lisp")
(add-to-list 'load-path "/usr/local/share/emacs/22.1/site-lisp")
(add-to-list 'load-path "/etc/emacs")
(add-to-list 'load-path "/etc/emacs-snapshot")
I'd probably be better if these were added a bit more automatically on
a bit lower level; in a word, they should be hardcoded. As far as I
can tell, they are somewhat hardcoded in the Debian emacs21 package,
but I can't figure out why they aren't for emacs-snapshot.
This might still be a problem with my system, so I'd appreciate if
someone else could confirm/deny that `load-path' lacks these entries.
> What is a good way to find out why a package is failing to load?
> The ``Error while loading 50foo'' messages are not in themselves
> helpful. For example,
> Loading 50w3m-el (source)...
> Error while loading 50w3m-el
> Loading 50wget-el (source)...done
> Loading 50whizzytex (source)...done
> Loading 51debian-el (source)...
> Error while loading 51debian-el
> Loading 51planner-el (source)...
> Error while loading 51planner-el
> How do you know what needs to be done to fix the w3m-el, debian-el,
> and planner-el packages?
It turned out that most of these problems were caused by a weird
situation that I do not fully understand, although I know the core
issue was byte compilation. At one point, I was completely unable to
The way out was to remove the troublemaking Emacs applications one by
one until emacs-snapshot could install cleanly, and then reinstall the
applications with emacs-snapshot in place. This gave them a chance to
byte-compile themselves for emacs-snapshot.
God, I'm not sure why I'm writing this. Hopefully the vague shreds of
information can be of value to someone.
Anyway, I'm learning a lot from this. I'm now a *huge* step closer to
a healthy, Debian-integrated, bleeding-edge Emacs! In fact, I think
all the pieces may just have fallen into place, because so far this
installation is *smooth*. Thanks again Jérôme and everyone else who
helped make this happen! :-)
Daniel Brockman <email@example.com>