bug#45448: Emacs can't load org mode after last update

[Pierre Langlois]

Hi!

Marinus Savoritias writes:

> I update Guix yesterday and org-mode doesn't load anymore.
>
> The debug trace is this:
>
> Debugger entered--Lisp error: (error "Invalid version syntax: ‘’ (must start
> with a number)")
>   signal(error ("Invalid version syntax: ‘’ (must start with a number)"))
>   error("Invalid version syntax: `%s' (must start with a number)" "")
>   version-to-list("")
>   version<("" "9.0")
>   #f(compiled-function () #<bytecode 0x5c3b49>)()
>   funcall(#f(compiled-function () #<bytecode 0x5c3b49>))
>   (lambda nil (funcall '#f(compiled-function () #<bytecode 0x5c3b49>)))()
> eval-after-load-helper("/home/marinus/.guix-profile/share/emacs/site-lisp/org.elc")
>   run-hook-with-args(eval-after-load-helper
> "/home/marinus/.guix-profile/share/emacs/site-lisp/org.elc")
> do-after-load-evaluation("/home/marinus/.guix-profile/share/emacs/site-lisp/org.elc")
>   require(org)
> byte-code("\300\301!\210\300\302!\210\300\303!\210\300\304!\210\300\305!\210\300\306!\210\307\310\311\312\313\314%\210\315\316\317\320\313\310\321\322&\7\210\315\323\324\325\313\310\321..."
> [require elfeed org dash s cl-lib xml custom-declare-group elfeed-org 
> nil "Configure the Elfeed RSS reader with an Orgmode fi..." :group comm
> custom-declare-variable rmh-elfeed-org-tree-id "elfeed" "The tag or ID 
> property on the trees containing the..." :type string 
> rmh-elfeed-org-ignore-tag
> "ignore" "The tag on the feed trees that will be ignored."
> rmh-elfeed-org-auto-ignore-invalid-feeds "Tag feeds to ignore them when a feed
> could not loa..." bool rmh-elfeed-org-files (list "~/.emacs.d/elfeed.org") 
> "The
> files where we look to find trees with the `rm..." (repeat (file :tag 
> "org-mode
> file"))] 8)
>   require(elfeed-org)
>   eval-buffer(#<buffer  *load*> nil "/home/marinus/.emacs" nil t)  ; Reading 
> at
> buffer position 39
>   load-with-code-conversion("/home/marinus/.emacs" "/home/marinus/.emacs" t t)
>   load("~/.emacs" noerror nomessage)
>   startup--load-user-init-file(#f(compiled-function () #<bytecode 0x5c3f71>)
> #f(compiled-function () #<bytecode 0x5c3f85>) t)
>   command-line()
>   normal-top-level()
>
> Everytime I try to open a org file I get the same error. I noticed that after 
> I
> removed the elfeed-org requirement to see if that was the problem.
>
> Emacs commit is this:   /gnu/store/lhw3zwhzra0w5l8a4jw8fvm58i75xyl8-emacs-27.1
>
> Guix System config is this:
>
> Generation 15   Dec 26 2020 15:25:17    (current)
>   guix 4969b51
>     repository URL: https://git.savannah.gnu.org/git/guix.git
>     branch: master
>     commit: 4969b51d175497bfcc354c91803e9d70542b7113
>
> My .emacs file has nothing besides this:
>
> ;;Elfeed config
>
> (require 'elfeed-org)
> (setq rmh-elfeed-org-files (list "~/.emacs.d/elfeed.org"))

I also hit this issue yesterday :-/. To fix it, I found you could make
sure to have (require 'org) *before* loading other packages that
depended on org. Would that work for you? I'm using use-package, so the
particular fix for me was to add ":after org" on every package
declaration that needed to use org.

There's still an issue upstream I think, probably due to a mis-match
between the org that's shipped in emacs and the newer one in guix?

Hope this helps!
Pierre

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