Re: Using Makefile to run guix shell?

[zimoun <zimon.toutoune@gmail.com>]

Hi,

On Fri, 09 Dec 2022 at 12:46, Peter Polidoro <peter@polidoro.io> wrote:

> I am not sure if you are the same Simon

Yes, I am. :-)  Have we met?

>                                          but it made me wonder if 
> using guix extension could a nice way to solve these sorts of 
> problems.

Well, I do not know, I mean it is not clear for me what I would like as
an interface.


> Could I have a set of guix extensions local to each project so 
> that I can run commands like:
>
> guix serial-shell PORT=/dev/ttyUSB0
>
> Which would really run something like:
>
> guix time-machine -C .channels.scm -- shell --container 
> --expose=$(PORT) -- make PORT=$(PORT) serial-shell

From my understanding, there is 2 levels:

 + how do you call the Guix specific?
 + how do you implement this Guix specific?

Because calling “guix serial-shell PORT=/dev/ttyUSB0” or
“guix-serial-shell PORT=/dev/ttyUSB0” is almost identical. :-)

So the true question is how to implement?  If using Shell script
containing something like,

    guix time-machine -C .channels.scm -- shell --container 
         --expose=$(PORT) -- make PORT=$(PORT) serial-shell

Well, the extension is just for fun; it would contain something like:

    (invoke "guix" "time-machine" …)

So the extension is replacing the dash by one space. :-)

Now, if instead of the command-line (guix time-machine …), you would
like to use the Scheme API, yeah you can do it using an extension.

From my point of view, in this case, maybe an extension is a heavy
solution when a quick script would just smooth the workflow.

Somehow, for the difference, give a look at patch#58339 [1],

 + [PATH 1/2] uses “(apply system* …)” instead of “invoke” but that’s
    the same idea,
 + [PATH 2/2] uses the Scheme API, sure trivially. :-)

1: <http://issues.guix.gnu.org/msgid/20221006163609.2280960-1-zimon.toutoune@gmail.com>


HTH.

Cheers,
simon