[bug#36976] [PATCH 1/1] download: Map file-name characters not allowed in store.

["Ludovic Courtès" <ludo@gnu.org>]

Hello,

Hartmut Goebel <h.goebel@crazy-compilers.com> skribis:

> Thanks for the review and the coding suggestions..
>
> Am 23.08.19 um 23:08 schrieb Ludovic Courtès:
>>> * guix/download.scm (safe-name): New function.
>>>   (download-to-store): NAME defaults to the "safe" basename of URL.
>> What about moving this automatic renaming feature to (guix scripts
>> download)?  I’d rather not do it in the core APIs.
> `download-to-store store` was defined as:
>
>    (define* (download-to-store store url #:optional (name (basename url)) …
>
> When developing this patch, I decided to put it into the core since
> users of this function would expect to be allowed to just pass any url
> and don't need to take care about valid characters. If not doing the
> automatic renaming here, users would need to perform the conversion
> prior to calling this function in any case (except when 100% sure only
> valid characters are used).

Yes, but that’s OK to me: IMO, procedures have to focused on one thing;
users can perform additional processing beforehand if they need it.

Conversely, commands have to do the right thing by default, which is why
I agree that ‘guix download’ should rename automatically when needed.

How does that sound?

Ludo’.