Re: Command not found when using Org + Guix + envrc.el

[Adolfo De Unanue]

I am facing the same problem, hopefully some one can help us
- A

On Sun, Apr 16, 2023, at 08:56, Fabio Natali wrote:
> Hi!
>
> I tend to set up my literate programming projects with:
>
> - Emacs and Org
> - Guix, to install the dependencies and create a development environment
> - direnv, to automatically load the Guix environment
> - envrc.el, to use direnv from Emacs
>
> It's a great setup and I'm very grateful to the above projects, but
> there are a few corner cases where things don't work as expected.
>
> For instance:
>
> - Define a Guix environment that includes Python (Python not being
>   installed on the system otherwise)
> - Create an envrc file that activates the Guix environment, e.g. via
>   ~eval "$(guix shell --search-paths --manifest="$1")~
> - In the same folder, create an Org file with a Python block
>
> The block is evaluated correctly when a new Emacs instance is launched
> from within the folder, and therefore from within the activated
> environment.
>
> However, things don't work as expected when using emacsclient with an
> existing Emacs server. Thanks to envrc.el the Guix environment gets
> apparently activated in the buffer, as confirmed by the envrc flag in
> the modeline and by the output of =(getenv "PATH")=. However, evaluating
> the block results in the following error:
>
> #+begin_quote
> /bin/bash: line 1: python: command not found
> [ Babel evaluation exited with code 127 ]
> #+end_quote
>
> Tangentially, if the block's header includes =:session=, as in
> =#+begin_src python :session=, then the error is slightly different and
> is displayed in the minibuffer as opposed to a separate buffer:
>
> #+begin_quote
> make-process--with-editor-process-filter: Searching for program: No 
> such file or directory, python
> #+end_quote
>
> Things work fine when manually setting =org-babel-python-command=, but
> hardcoding the Guix store path is clearly inconvenient, to start with
> it'd require constant update.
>
> #+begin_quote
> (setq-local org-babel-python-command "/gnu/store/...")
> #+end_quote
>
> Does anyone have any idea on how to investigate this further? I'm still
> unsure whether this may have to do with envrc.el, Org Babel, or possibly
> with some quirks in my configuration.
>
> Thanks, cheers, Fabio.