Re: ob-sql is not finding psql when using direnv+guix

["Adolfo De Unanue" <adolfo+org@unanue.mx>]

Dear Malcom

On Mon, May 10, 2021, at 13:14, Cook, Malcolm wrote:
> >I am using Guix with direnv.
> 
> What is your shell?
> 

My shell is bash, originally I was using zsh and I thought that was the problem, so I switched to bash and still not working.

> How/When do you "hook direnv into your shell" (https://direnv.net/)?
> 

In the .profile file, at login.

> > In an specific folder I am installing and using psql and postgresql using direnv+guix as follows:
> >use guix --manifest=cdpp-manifest.scm
> >
> >export PGUSER=food_user
> >export PGPASSWORD=some_password
> >export PGDATABASE=food
> >
> >layout postgres
> 
> When are you doing this?
> 
>  a) in the "specific folder"'s .envrc file?
>  b) in an org-mode shell block that you execute prior to the sql block?
>  c) ??
> 
>

Option (a)

 
> You seem to be following [Per\-project 
> Postgres](https://jamey.thesharps.us/2019/05/29/per-project-postgres/) 
> but with guix instead of nix.  Nice.
> 

Yep, great post. direnv + guix change the way I develop software, do data science and write lectures and papers.

> If you enter the directory and then call emacs, earthing should just 
> work, no changes neede.
> 

It works for almost everything (sql-buffers, python buffers, etc), except for org-babel sql blocks.

I am using EXWM, so emacs is always on.


> If you want to tell emacs to adopt the environment established by a 
> .direnv, you probably want [direnv integration for 
> emacs\.](https://github.com/wbolster/emacs-direnv)
> 

emacs-direnv was my first choice, but then I changed to envrc (https://github.com/purcell/envrc) . In both I got the error.

> I've got to try this!
> 
> Cheers
> 

Please tell me how that works for you

Thanks

- A


> >
> >
> >Where cdpp-manifest.scm contains the following:
> >
> >(specifications->manifest
> >'("python"
> >   "python-pandas"
> >   "python-numpy"
> >   "python-flask"
> >   "python-graphene"
> >   "postgresql"
> >   "jupyter"))
> >
> >I am able to use sql-mode and run queries against the database, in order to achieve that I am using the following .dir-locals.el
> >
> >;;; Directory Local Variables
> >;;; For more information see (info "(emacs) Directory Variables")
> >
> >
> >((nil .
> >      ((projectile-project-test-cmd . "pytest --color=no --failed-first --maxfail=5")))
> >(python-mode .
> >              ((python-shell-buffer-name . "Python [CDPP-Inspecciones]")))
> >
> >(org-mode . (
> >              (indent-tabs-mode . nil)
> >              (org-src-preserve-indentation . t)
> >              (org-footnote-auto-adjust . t)
> >              (org-footnote-auto-label . t)
> >              (ispell-local-dictionary . "spanish")
> >              (org-export-allow-bind-keywords . t)
> >              (org-footnote-define-inline . nil)
> >              (org-footnote-section . "Footnotes")))
> >
> >(sql-mode . ((sql-connection-alist . ((mydb
> >                                        (sql-product 'postgres)
> >                                        (sql-database "mydb")
> >                                        (sql-user "db_user")
> >                                        (sql-server (expand-file-name ".direnv/postgres"))
> >                                        (sql-port 5432)
> >                                        )
> >                                      )))))
> >
> >But If I try to use an sql org-babel block
> >
> >#+begin_src sql
> >select 1;
> >#+end_src
> >
> >(I am setting the connection variables in a PROPERTY)
> >
> >I get the error: `psql is not found`
> >
> >
> >I was reading about the variable sql-postgres-program, so if I set the following in dir-locals.el
> >
> >(sql-postgres-program . "/gnu/store/f2v92bkx2vfzmkl14qxj3hlmby4dy9x0-profile/bin/psql")
> >
> >It works (note that psql ONLY lives inside the profile defined by direnv+guix), but I don't like the idea of hardcode the path.
> >
> >Is there a better way?
> >
> >Ideally I will expect that the org block will read it from the environment, but is not working. 
> >
> >Thanks in advance
> >
>