emacs-orgmode@gnu.org archives
 help / color / mirror / code / Atom feed
* Changing the environment before calling source block?
@ 2021-03-15 14:59 Loris Bennett
  2021-10-03  6:55 ` Ihor Radchenko
  0 siblings, 1 reply; 2+ messages in thread
From: Loris Bennett @ 2021-03-15 14:59 UTC (permalink / raw)
  To: Org Mode Mailing List

Hi,

I have multiple versions of each of various languages such as Python
or R.  On the command line I can select a version using the 'module'[1]
mechanism provided by Lmod[2]:

  module load Python/2.7.18-GCCcore-9.3.0

or 

  module load Python/3.8.6-GCCcore-10.2.0
 
This 'module' mechanism basically just provides a sane way to tweak and
untweak environment variables.

My question is: How do I change the environment, ideally call 'module
load ...' but potentially just set environment variables, before calling
a source block?

Cheers,

Loris

Footnotes: 
[1]  Nothing to do with Python modules
[2]  https://lmod.readthedocs.io/en/latest/index.html

-- 
This signature is currently under construction.


^ permalink raw reply	[flat|nested] 2+ messages in thread

* Re: Changing the environment before calling source block?
  2021-03-15 14:59 Changing the environment before calling source block? Loris Bennett
@ 2021-10-03  6:55 ` Ihor Radchenko
  0 siblings, 0 replies; 2+ messages in thread
From: Ihor Radchenko @ 2021-10-03  6:55 UTC (permalink / raw)
  To: Loris Bennett; +Cc: Org Mode Mailing List

"Loris Bennett" <loris.bennett@fu-berlin.de> writes:

> Hi,
>
> I have multiple versions of each of various languages such as Python
> or R.  On the command line I can select a version using the 'module'[1]
> mechanism provided by Lmod[2]:
>
> My question is: How do I change the environment, ideally call 'module
> load ...' but potentially just set environment variables, before calling
> a source block?

It depends on source block language.  For Python, there is :python
header arg where you can specify python command to be used.  I am not
sure about R

More generally, you can advice org-babel-execute-src-block and wrap it
into something like with-environment-variables macro (available in
newest Emacs).

Or you can write a bash source block, set envitonment there as usual,
and invoke your Python/R script using noweb.

Hope it helps.

Best,
Ihor


^ permalink raw reply	[flat|nested] 2+ messages in thread

end of thread, other threads:[~2021-10-03  6:55 UTC | newest]

Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-03-15 14:59 Changing the environment before calling source block? Loris Bennett
2021-10-03  6:55 ` Ihor Radchenko

Code repositories for project(s) associated with this inbox:

	https://git.savannah.gnu.org/cgit/emacs/org-mode.git

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).