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From: Christopher Baines <mail@cbaines.net>
To: "Ludovic Courtès" <ludo@gnu.org>
Cc: 45409@debbugs.gnu.org
Subject: [bug#45409] [PATCH 3/3] guix: Split (guix substitute) from (guix scripts substitute).
Date: Sun, 03 Jan 2021 18:19:26 +0000	[thread overview]
Message-ID: <87r1n1993l.fsf@cbaines.net> (raw)
In-Reply-To: <87czym12j1.fsf@gnu.org>

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Ludovic Courtès <ludo@gnu.org> writes:

> Hi,
>
> Christopher Baines <mail@cbaines.net> skribis:
>
>> This means there's a module for working with substitutes, rather than all the
>> code sitting in the script. The need for this can be seen with the weather and
>> challenge scripts, that now don't have to use code from the substitute script,
>> but can instead use the substitute module.
>>
>> The separation here between the actual functionality of the substitute script
>> and the underlying functionality used both there and elsewhere should make
>> maintenance easier moving forward.
>>
>> This commit just moves code, none of the code should have been changed
>> significantly.
>
> It would still be nice to list the identifiers that were moved in the
> commit log, it’s boring :-) but it can be helpful when browsing the
> history.

Sure, I've done that now, I'd got bored by this point before.

> As for the split, I wouldn’t put as much into (guix substitutes) (I’d
> use “substitutes”, plural, for consistency with most other modules.)

Done.

> As a rule of thumb, I would keep in (guix scripts substitute) anything
> that’s very much biased towards a single short-lived process: connection
> cache, host name resolution failure cache, etc.  These things are a bit
> hacky and not designed for use as a library.  They’re also very much
> policy rather than mechanism, and as such they don’t belong in a proper
> library IMO.

I think that's fine, but it's harder said than done. I think the
connection caching and host name resolution failure caching code would
need unpicking from the general substitute fetching code, and I haven't
attempted to do that yet.

>> -(define* (http-multiple-get base-uri proc seed requests
>> -                            #:key port (verify-certificate? #t)
>> -                            (open-connection guix:open-connection-for-uri)
>> -                            (keep-alive? #t)
>> -                            (batch-size 1000))
>
> How about moving this one to (guix http-client), as a separate patch?
> I think it’s a better fit and could be useful elsewhere.

Sure, that sounds good, I'll look at it later with a separate patch.

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  reply	other threads:[~2021-01-03 18:20 UTC|newest]

Thread overview: 56+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-24 17:17 [bug#45409] [PATCH 0/3] Move some (guix scripts substitute) code to two new modules Christopher Baines
2020-12-24 17:22 ` [bug#45409] [PATCH 1/3] guix: Move narinfo code from substitute script to module Christopher Baines
2020-12-24 17:22   ` [bug#45409] [PATCH 2/3] guix: Untangle (guix narinfo) from (guix scripts substitute) Christopher Baines
2020-12-24 17:22   ` [bug#45409] [PATCH 3/3] guix: Split (guix substitute) " Christopher Baines
2021-01-03 15:08     ` Ludovic Courtès
2021-01-03 18:19       ` Christopher Baines [this message]
2021-01-03 15:03   ` [bug#45409] [PATCH 1/3] guix: Move narinfo code from substitute script to module Ludovic Courtès
2021-01-03 18:16     ` Christopher Baines
2021-01-04 21:24       ` Christopher Baines
2021-01-03 17:59 ` [bug#45409] [PATCH v2 1/3] substitute: Untangle skipping authentication from valid-narinfo? Christopher Baines
2021-01-03 17:59   ` [bug#45409] [PATCH v2 2/3] guix: Move narinfo code from substitute script to module Christopher Baines
2021-01-03 17:59   ` [bug#45409] [PATCH v2 3/3] guix: Split (guix substitutes) from (guix scripts substitute) Christopher Baines
2021-01-04 21:19 ` [bug#45409] [PATCH v3 1/3] substitute: Untangle skipping authentication from valid-narinfo? Christopher Baines
2021-01-04 21:19   ` [bug#45409] [PATCH v3 2/3] guix: Move narinfo code from substitute script to module Christopher Baines
2021-01-05 21:58     ` Ludovic Courtès
2021-01-04 21:19   ` [bug#45409] [PATCH v3 3/3] guix: Split (guix substitutes) from (guix scripts substitute) Christopher Baines
2021-01-05 22:03     ` Ludovic Courtès
2021-01-07 22:29       ` Christopher Baines
2021-01-11 13:26         ` Ludovic Courtès
2021-01-16 14:18           ` Christopher Baines
2021-02-13 13:56             ` Christopher Baines
2021-02-22 22:21               ` Christopher Baines
2021-02-23 20:46                 ` Christopher Baines
2021-01-05 21:57   ` [bug#45409] [PATCH v3 1/3] substitute: Untangle skipping authentication from valid-narinfo? Ludovic Courtès
2021-01-05 22:58     ` Christopher Baines
2021-01-06  8:37       ` Ludovic Courtès
2021-01-16 13:57 ` [bug#45409] [PATCH v4 01/13] substitute: Remove buffer handling from fetch Christopher Baines
2021-01-16 13:57   ` [bug#45409] [PATCH v4 02/13] substitute: Remove connection " Christopher Baines
2021-01-16 13:57   ` [bug#45409] [PATCH v4 03/13] substitute: Remove redundant let block " Christopher Baines
2021-01-16 13:57   ` [bug#45409] [PATCH v4 04/13] guix: Move http-multiple-get to (guix http-client) Christopher Baines
2021-01-16 13:57   ` [bug#45409] [PATCH v4 05/13] http-client: Add error handling to http-multiple-get Christopher Baines
2021-01-16 13:57   ` [bug#45409] [PATCH v4 06/13] substitute: open-connection-for-uri/maybe add #:verify-certificate? Christopher Baines
2021-01-16 13:57   ` [bug#45409] [PATCH v4 07/13] substitute: Stop using call-with-cached-connection in fetch-narinfos Christopher Baines
2021-01-16 13:57   ` [bug#45409] [PATCH v4 08/13] http-client: Accept #:open-connection in http-fetch Christopher Baines
2021-01-16 13:57   ` [bug#45409] [PATCH v4 09/13] substitute: Change connection cache handling in process-substitution Christopher Baines
2021-01-16 13:58   ` [bug#45409] [PATCH v4 10/13] substitute: Remove now redundant connection caching helpers Christopher Baines
2021-01-16 13:58   ` [bug#45409] [PATCH v4 11/13] substitute: Remove redundant fetch arguments Christopher Baines
2021-01-16 13:58   ` [bug#45409] [PATCH v4 12/13] substitute: Inline fetch in to process-substitutes Christopher Baines
2021-01-16 13:58   ` [bug#45409] [PATCH v4 13/13] substitute: Remove fetch-narinfos use open-connection-for-uri/maybe Christopher Baines
2021-02-13 13:47 ` [bug#45409] [PATCH v5 01/14] substitute: Remove buffer handling from fetch Christopher Baines
2021-02-13 13:47   ` [bug#45409] [PATCH v5 02/14] substitute: Remove connection " Christopher Baines
2021-02-13 13:47   ` [bug#45409] [PATCH v5 03/14] substitute: Remove redundant let block " Christopher Baines
2021-02-13 13:47   ` [bug#45409] [PATCH v5 04/14] guix: Move http-multiple-get to (guix http-client) Christopher Baines
2021-02-13 13:47   ` [bug#45409] [PATCH v5 05/14] http-client: Add error handling to http-multiple-get Christopher Baines
2021-02-13 13:47   ` [bug#45409] [PATCH v5 06/14] substitute: open-connection-for-uri/maybe add #:verify-certificate? Christopher Baines
2021-02-13 13:47   ` [bug#45409] [PATCH v5 07/14] substitute: Stop using call-with-cached-connection in fetch-narinfos Christopher Baines
2021-02-13 13:47   ` [bug#45409] [PATCH v5 08/14] http-client: Accept #:open-connection in http-fetch Christopher Baines
2021-02-13 13:47   ` [bug#45409] [PATCH v5 09/14] substitute: Change connection cache handling in process-substitution Christopher Baines
2021-02-13 13:47   ` [bug#45409] [PATCH v5 10/14] substitute: Remove now redundant connection caching helpers Christopher Baines
2021-02-13 13:47   ` [bug#45409] [PATCH v5 11/14] substitute: Remove redundant fetch arguments Christopher Baines
2021-02-13 13:47   ` [bug#45409] [PATCH v5 12/14] substitute: Inline fetch in to process-substitutes Christopher Baines
2021-02-13 13:47   ` [bug#45409] [PATCH v5 13/14] substitute: Remove fetch-narinfos use open-connection-for-uri/maybe Christopher Baines
2021-02-13 13:47   ` [bug#45409] [PATCH v5 14/14] substitute: Rework connection error handling Christopher Baines
2021-02-23 19:59 ` [bug#45409] [PATCH 1/2] guix: Split (guix substitutes) from (guix scripts substitute) Christopher Baines
2021-02-23 19:59   ` [bug#45409] [PATCH 2/2] substitute: Print backtraces to (current-error-port) Christopher Baines
2021-03-06  0:57 ` bug#45409: [PATCH 0/3] Move some (guix scripts substitute) code to two new modules Christopher Baines

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