GNU bug report logs - #50296
[PATCH 0/2] Add 'guix home' command.

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From: zimoun <zimon.toutoune <at> gmail.com>
To: Andrew Tropin <andrew <at> trop.in>, 50296 <at> debbugs.gnu.org
Subject: [bug#50296] [PATCH 1/2] scripts: Add 'guix home'.
Date: Tue, 31 Aug 2021 12:53:51 +0200

Hi,

On Tue, 31 Aug 2021 at 12:40, Andrew Tropin <andrew <at> trop.in> wrote:

> +(define-command (guix-home . args)
> +  (synopsis "build and deploy home environments")
> +
> +  (define (parse-sub-command arg result)
> +    ;; Parse sub-command ARG and augment RESULT accordingly.
> +    (if (assoc-ref result 'action)
> +        (alist-cons 'argument arg result)
> +        (let ((action (string->symbol arg)))
> +          (case action
> +            ((build
> +              reconfigure
> +              extension-graph shepherd-graph
> +              list-generations describe
> +              delete-generations roll-back
> +              switch-generation search
> +              import)
> +             (alist-cons 'action action result))
> +            (else (leave (G_ "~a: unknown action~%") action))))))

For parsing the actions, I would define elsewhere the list.  Then if the
action is unknown, you could use ’string-closest’ and so return an hint
if there is a typo.

Other said, this

  guix home recnfigure

would return

  guix home: error: recnfigure: unknown action
  hint: Did you mean `reconfigure'?

WDYT?

Cheers,
simon

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