app-editors/emacs and emacs-cvs (all versions >= 21) override the file /usr/share/emacs/site-lisp/subdirs.el which is part of the site installation. Especially it is not longer possible to exclude subdirectories from the lisp load-path. Let me first explain the behaviour of vanilla Emacs. It installs two identical files called "subdirs.el" in /usr/share/emacs/site-lisp and in /usr/share/emacs/${PV}/site-lisp. Their default action is to scan all subdirectories. However, an already installed subdirs.el will not be overwritten. With the introduction of SLOT support the Gentoo way of doing things was changed. The file in the former directory is no longer installed (to avoid collisions between slots), but the file in ${PV}/site-lisp has been modified to scan the subdirectories of /usr/share/emacs/site-lisp, too. (This modification is done by the patch emacs-subdirs-el-gentoo.diff.) The result is that it is now no longer (at least not easily) possible for a user/site supplied subdirs.el to exclude some subdirectories from scanning. Attached patch will bring the behaviour closer to the vanilla version by moving the subdirs.el installation to pkg_postinst().
Created attachment 111898 [details, diff] Proposed patch for emacs-cvs-22.0.9999-r4.ebuild For the other CVS and non-CVS versions, the changes are essentially identical.
(In reply to comment #1) > For the other CVS and non-CVS versions, the changes are essentially identical. I changed 22.0.95 and 22.0.9999 (new revisions). 23's ebuild needs a great deal of rework. For 21 I will wait if any problems occur in cvs versions.
Hi, it seems your change broke some stuff like CEDET. app-emacs/cedet-1.0_pre3-r2 installs its lisp files under /usr/share/emacs/site-lisp/cedet/ with various subdirs. The 60cedet-gentoo.el loads /usr/share/emacs/site-lisp/cedet/common/cedet.el which seems to add the paths to the individual tools included in cedet to the emacs load-path. These are all the messages in the *Messages* buffer: Warning: no fonts matching `-*-fixed-medium-r-normal-*-16-*-*-*-*-*-iso8859-1' available [2 times] (emacs) Loading /usr/share/emacs/site-lisp/site-gentoo.el (source)... Loading /usr/share/emacs/site-lisp/haskell-mode/haskell-site-file.el (source)...done Loading /usr/share/emacs/site-lisp/tex-site.el (source)...done Loading /usr/share/emacs/site-lisp/cedet/common/cedet... "/usr/share/emacs/site-lisp/cedet/common/" added to `load-path' "/usr/share/emacs/site-lisp/cedet/cogre" added to `load-path' "/usr/share/emacs/site-lisp/cedet/ede" added to `load-path' "/usr/share/emacs/site-lisp/cedet/eieio" added to `load-path' "/usr/share/emacs/site-lisp/cedet/semantic" added to `load-path' "/usr/share/emacs/site-lisp/cedet/speedbar" added to `load-path' "/usr/share/emacs/site-lisp/cedet/contrib" added to `load-path' Setting up cedet...done Setting up cogre...done Setting up ede...done Setting up eieio...done Setting up semantic... Loading derived...done Loading advice...done Loading semantic-idle... Loading easymenu...done Loading semantic-idle...done Loading semanticdb...done Loading semanticdb-system...done Mark set [112 times] Loading senator... Loading ring...done Loading senator...done Setting up semantic...done Setting up speedbar...done Setting up cedet-contrib...done Loading /usr/share/emacs/site-lisp/cedet/common/cedet...done ECB 2.32 uses loaded semantic 2.0pre3, eieio 1.0pre3 and speedbar 1.0pre3. Loading edmacro...done Loading easy-mmode...done Loading cl-seq...done Loading byte-opt...done Loading /usr/share/emacs/site-lisp/nxml-mode/rng-auto.el (source)...done Loading /usr/share/emacs/site-lisp/site-gentoo.el (source)...done Loading paren...done Loading subst-ksc...done Loading subst-gb2312...done Loading subst-big5...done Loading subst-jis...done Loading disp-table...done Loading desktop...done Loading rx...done Loading regexp-opt...done EMMS Last.fm plugin activated Loading windmove...done Loading winner...done Loading ido...done Loading recentf...done Loading /home/heimdall/.recentf...done Cleaning up the recentf list...done (0 removed) Loading gnuserv-compat...done ==> ~/.emacs successfully loaded. <== Loading /home/heimdall/.emms-cache...done Desktop: 0 buffers restored. Loading eldoc...done run-hooks: Cannot open load file: semantic-el The last line errors because loading cedet.el by the 60cedet-gentoo.el added only the path listed at the beginning of the *Messages* buffer to the load-path. The language-dependend files like semantic-el.el, semantic-c.el, semantic-java.el and so on are in the directory /usr/share/emacs/site-lisp/cedet/bovine/ which is not in the load path. If I add (add-to-list 'load-path "/usr/share/emacs/site-lisp/cedet/bovine") to my ~/.emacs the problem is fixed, but I think this has to be fixed somewhere else, not in the user's config files.
OK, I shall look into that (for me cedet seems to work...). Can you post your /usr/share/emacs/site-lisp/subdirs.el here?
(In reply to comment #3) > Hi, it seems your change broke some stuff like CEDET. > [...] > The language-dependend files like semantic-el.el, semantic-c.el, > semantic-java.el and so on are in the directory > > /usr/share/emacs/site-lisp/cedet/bovine/ > > which is not in the load path. Cedet expects them in /usr/share/emacs/site-lisp/cedet/semantic/bovine (which it adds to the load-path). This appears to be a cedet issue, so I have opened bug #169617 for this.
> Can you post your /usr/share/emacs/site-lisp/subdirs.el here? There's no such file, but I have a /usr/share/emacs/22.0.95/site-lisp/subdirs.el containing (if (fboundp 'normal-top-level-add-subdirs-to-load-path) (normal-top-level-add-subdirs-to-load-path)) and /usr/share/emacs/22.0.95/lisp/subdirs.el containing ;; -*- no-byte-compile: t -*- ;; In load-path, after this directory should come ;; certain of its subdirectories. Here we specify them. (normal-top-level-add-to-load-path '("url" "textmodes" "progmodes" "play" "obsolete" "net" "mh-e" "mail" "language" "international" "gnus" "eshell" "erc" "emulation" "emacs-lisp" "calendar" "calc" )) ;; Local Variables: ;; version-control: never ;; no-byte-compile: t ;; End:
(In reply to comment #6) > > Can you post your /usr/share/emacs/site-lisp/subdirs.el here? > There's no such file [...] There should be. It should be created when emergeing Emacs (during the post-install phase). Did you get any error messages during emerge (they should appear immediately before the "Linking /usr/bin/emacs..." einfo messages)?
Indeed, there's an error: >>> Original instance of package unmerged safely. cp: cannot stat `//usr/share/emacs/22.0.9999/site-lisp/subdirs.el': No such file or directory * Linking /usr/bin/emacs.emacs-22.0.95 to /usr/bin/emacs (relative)
(In reply to comment #8) > Indeed, there's an error: > > >>> Original instance of package unmerged safely. > cp: cannot stat `//usr/share/emacs/22.0.9999/site-lisp/subdirs.el': No such I suppose in the ebuild ${SLOT} should be used instead of ${PV} when copying the file.
(In reply to comment #9) > I suppose in the ebuild ${SLOT} should be used instead of ${PV} when copying > the file. Yep, for the live CVS ebuild. (For emacs-21.* ${PV} should be used.)
Ok, I changed the commands in cvs ebuild, and adjusted the normal emacs to not include subdirs patch.
