bug#42802: Unhandled FTP exception when using GNU importer

[zimoun]

Hi Maxim

On Tue, 2 Feb 2021 at 15:13, Maxim Cournoyer <maxim.cournoyer@gmail.com> wrote:

> ./pre-inst-env guix import gnu libsocketcan
> guix import: error: failed to determine latest release of GNU libsocketcan
>
> Thanks for the fix; that's much nicer than a backtrace.  It would be
> even better if it said:
>
> 'guix import: error: No GNU package found for "libsocketcan"'

Yeah, replace the message sounds good.  The one you are proposing
works for both cases: "guix import gnu hello@1.2.3" and "guix import
gnu not-gnu-package".  Even if version is not supported, another
story.
Attached the trivial patch in case.


Cheers,
simon

0001-import-gnu-Fix-error-message.patch
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