Hi,
I am sharing my .emacs file, and this is beginning to cause problems with
people who don't have the same environment as I do. In particular with the
following:
#+begin_src emacs-lisp
(org-babel-do-load-languages
'org-babel-load-languages
'(
(C . t)
(R . t)
(calc . t)
(ditaa . t)
(dot . t)
(emacs-lisp . t)
(gnuplot . t)
(haskell . nil)
(latex . t)
(ledger . t)
(ocaml . nil)
(octave . nil)
(org . t)
(perl . t)
(python . t)
(ruby . t)
(screen . t)
(sh . t)
(sql . t)
(sqlite . t)))
#+end_src
Someone got:
--8<---------------cut here---------------start------------->8---
Debugger entered--Lisp error: (file-error "Cannot open load file" "ob-calc")
--8<---------------cut here---------------end--------------->8---
In fact, this is much more general than checking the Org-version: it addresses
as well installed packages such as
- Rterm (R and ess-mode)
- ditaa (requires =sudo aptitude install openjdk-6-jre=)
- gnuplot (requires gnuplot-mode)
- ledger (requires that =ob-ledger= is found...)
- org (requires that =ob-org= is found...)
- ruby
Do I have to check myself for such executables in a way similar to:
#+begin_src emacs-lisp
(when (find-exec "Rterm")
... add R language ...
)
(when (file-exists-p "ob-ledger")
... add ledger language ...
)
#+end_src
or could we come up with some more generic and compact solution that would
easily be usable by all of us?
Maybe such a check should be made, by default, in every language file?
Best regards,
Seb
--
Sébastien Vauban
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