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

["Cook, Malcolm" <MEC@stowers.org>]

> > >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 see.  Envrc looks superior.  Good to know.

You've covered all my bases.  Shooting in the dark,  I would confirm/check the following:

How do you know that envrc is working otherwise?

When you switch to a direnv controlled buffer do you get any informative diagnostics in *Messages*?

Do you get any more if you first `(setq envrc-debug t)`?

Is this buffer in the same directory as the .direnvrc file?

Presumably TRAMP is not in the mix in any way.

Variable sql-postgres-program is unchanged from default value of psql

What is result of

	m-x shell-command
	which psql

and does it change as expected/required depending on the current active .direnvrc?

What happens if you eval (getenv 'psql) while in buffer governed by direnv, or alternatively

	m-x getenv
	psql

If you `m-x shell`, does normal direnv work as expected in the created shell?

> > I've got to try this!
> > 
> > Cheers
> > 
> 
> Please tell me how that works for you

Gotta get guix rolling again.  Hope to do this RSN.

Cheers,

~Malcolm

> 
> 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
> > >
> > 
>