I'm having trouble getting the new version of babel to work with
haskell and R under Ubuntu 10.04 using emacs-snapshot.  It works fine
for emacs-lisp.  I had to change the variable LISPF in the Makefile
to:

LISPF      = 	org.el				\
.....
		babel/ob.el			\
		babel/ob-table.el		\
		babel/ob-lob.el			\
		babel/ob-ref.el			\
		babel/ob-exp.el			\
		babel/ob-tangle.el		\
		babel/ob-comint.el		\
		babel/ob-keys.el		\
		babel/langs/ob-emacs-lisp.el	\
		babel/langs/ob-haskell.el	\
		babel/langs/ob-latex.el	\
		babel/langs/ob-sh.el	\
		babel/langs/ob-asymptote.el	\
		babel/langs/ob-R.el	\
		babel/langs/ob-gnuplot.el	

otherwise I couldn't compile my .emacs file, which contains the following:

(require 'org-install)

;;(require 'org)
;;(require 'ob)
;;(require 'ob-tangle)
;; org-babel set up
(require 'ob-haskell)
(require 'ob-latex)
(require 'ob-sh)
(require 'ob-asymptote)
(require 'ob-R)
(require 'ob-gnuplot)

The following works fine:
          #+tblname: example-table
          | 1 |
          | 2 |
          | 3 |
          | 4 |

          #+source: table-length
          #+begin_src emacs-lisp  :var table=example-table
          (length table)
          #+end_src

          #+results: table-length
	  : 4

But when I try the haskell equivalent:
          #+source: table-length
          #+begin_src haskell  :var table=example-table
          length table
          #+end_src


I get:
executing haskell source code block
reference 'example-table' not found in this buffer
org-babel-ref-resolve-reference: reference 'example-table' not found
in this buffer

If I try:
          #+source: table-length
          #+begin_src haskell
          length [1,2,3]
          #+end_src


I get:
executing haskell source code block
org-babel-execute:haskell: Symbol's function definition is void: session


I also get a lot of warnings when I compile org-mode, see the attached
buiild log.


Thanks for your help,

Chris Witte.

On 23 June 2010 23:09, Eric Schulte <schulte.eric@gmail.com> wrote:
> Hi,
>
> I've just merged the babel branch into the main branch of Org-mode.
> This merge culminates much integration work by Dan Davison and Tom Dye,
> as well as myself.
>
> Babel is now part of Org-mode.
>
> The biggest changes are:
>
> 1) Babel now has documentation!  It is part of Org-mode's documentation
>
>   see Chapter 14 _Working With Source Code_
>
>   also, the Babel keybindings are now listed in the refcard, and can be
>   viewed from any Org-mode buffer by pressing C-c C-v h
>
> 2) Babel will now be loaded by default along with the rest of Org-mode.
>   This means that *everyone* currently using babel will need to change
>   their Emacs config and remove the (require 'org-babel-int) and/or
>   (require 'org-babel) lines.
>
>   Support for evaluating emacs-lisp code blocks is loaded by default.
>   All other languages will need to be required explicitly.  To conform
>   to Emacs filename specifications all language require lines have been
>   shortened from e.g.
>
>   (require 'org-babel-sh)
>
>   to
>
>   (require 'ob-sh)
>
> Thanks -- Eric
>
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