#30647 - [PATCH] guix build: Support '--remote-log-file=PACKAGE'.

Package	Source(s)		Maintainer(s)
guix-patches		PTS Buildd Popcon

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From: ludo@gnu.org (Ludovic Courtès)
To: Tobias Geerinckx-Rice <me@tobias.gr>
Subject: Re: [bug#30647] [PATCH] guix build: Support
 '--remote-log-file=PACKAGE'.
References: <20180228141959.19789-1-go.wigust@gmail.com>
 <87po4ou5ie.fsf@gnu.org> <940aba4e5d289b70aa499525c0093704@tobias.gr>
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 Geerinckx-Rice's message of "Thu, 01 Mar 2018 16:16:36 +0100")
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Hey Tobias,

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

> On 2018-02-28 23:13, ludo@gnu.org wrote:
>> What did you think of having ‘--log-file’ transparently fall back to
>> searching for log files on substitute servers?
>>
>> I find it handy, but also wondered if it might surprise users that such
>> a trivially-looking option connects to external servers.
>
> It would pleasantly surprise me :-)

Good.  :-)

> TBH, I don't see the difference between this & all other actions that
> already connect to external servers.
>
> Is this different? Will it ignore ’--no-substitutes’, or ping servers
> outside of user-approved substitute-urls? Does it need to?

It’s not really different, indeed.  (The only thing is that the list of
substitute URLs that is used by ‘--log-file’ can differ from that of
guix-daemon; but that’s a bug, really.)

>> I thought about having it print something when it does so.
>
> Like a progress bar? Seems more eye-catching than yet another
> warning. Or something more permanent in/next to the downloaded log?

‘--log-file’ just probes remote servers without actually downloading the
log, so a progress bar wouldn’t be useful.

I was thinking of a message like:

  info: looking for build log at https://…/log/…-foo

Ludo’.

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#30647 [PATCH] guix build: Support '--remote-log-file=PACKAGE'.