bug#43159: [PATCHES v2] scripts: Use 'define-command' and have 'guix help' use that.

[Ludovic Courtès]

Ludovic Courtès <ludo@gnu.org> skribis:

> Here’s a v2 of the patches, where I tried to take your feedback into
> account.  Changes:
>
>   • Categories that appear in uses of ‘define-command’ are now validated
>     at macro-expansion time.
>
>   • (guix scripts) contains an alist of the known categories and
>     ‘show-help’ traverses it.
>
>   • Changed the label for development commands to “commands for
>     development”, and changed “advanced” to “plumbing”.
>
>   • Added a “packaging” category.
>
>   • Fixed the typos you reported.

I pushed this v2 as 3794ce93be8216d8378df7b808ce7f53b1e05a53.

Let’s iterate from here if people have ideas about better categorization
or things like that.

Thanks,
Ludo’.