GNU bug report logs - #36333
Misleading hint for url-fetch

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Tobias Geerinckx-Rice <me <at> tobias.gr>
To: bug-guix <at> gnu.org
Subject: Misleading hint for url-fetch
Date: Sat, 22 Jun 2019 22:23:17 +0200

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Guix,

I just encountered the following:

 foo.scm:4:2: error: url-fetch: unbound variable
 hint: Did you forget `(use-modules (guix build download))'?

Actually importing that module, instead of (guix download), will 
cause some other very hard-to-debug error that I can't remember 
but coincidentally helped someone fix on #guix the other day.

Now I understand how they got to that bad place.

Kind regards,

T G-R

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Message #8 received at 36333 <at> debbugs.gnu.org (full text, mbox):

From: Gábor Boskovits <boskovits <at> gmail.com>
To: Tobias Geerinckx-Rice <me <at> tobias.gr>
Cc: 36333 <at> debbugs.gnu.org
Subject: Re: bug#36333: Misleading hint for url-fetch
Date: Sun, 23 Jun 2019 06:18:18 +0000

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Hello,

Tobias Geerinckx-Rice <me <at> tobias.gr> ezt írta (időpont: 2019. jún. 22.,
Szo, 20:24):

> Guix,
>
> I just encountered the following:
>
>
I've also seen that.

  foo.scm:4:2: error: url-fetch: unbound variable
>   hint: Did you forget `(use-modules (guix build download))'?
>
> Actually importing that module, instead of (guix download), will
> cause some other very hard-to-debug error that I can't remember
> but coincidentally helped someone fix on #guix the other day.
>
> Now I understand how they got to that bad place.
>
> Kind regards,
>
> T G-R
>

Best regards,
g_bor

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Message #11 received at 36333 <at> debbugs.gnu.org (full text, mbox):

From: Ludovic Courtès <ludo <at> gnu.org>
To: Tobias Geerinckx-Rice <me <at> tobias.gr>
Cc: 36333 <at> debbugs.gnu.org
Subject: Re: bug#36333: Misleading hint for url-fetch
Date: Mon, 24 Jun 2019 21:51:33 +0200

Hello,

Tobias Geerinckx-Rice <me <at> tobias.gr> skribis:

> I just encountered the following:
>
>  foo.scm:4:2: error: url-fetch: unbound variable
>  hint: Did you forget `(use-modules (guix build download))'?
>
> Actually importing that module, instead of (guix download), will cause
> some other very hard-to-debug error that I can't remember but
> coincidentally helped someone fix on #guix the other day.

Oh, bad hint indeed.

Now, the program cannot determine that of the two ‘url-fetch’, only one
makes sense.

Should it search further and propose all the possible options?  In
general there won’t be more than a couple of options.

Thanks,
Ludo’.

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