Subject: bug#43442: closed (Re: bug#43442: Code stored with Subversion (SVN) cannot be retrieved from SWH)

From: [email-masked] (GNU bug Tracking System)
Date: Sat, 09 Mar 2024 22:36:01 +0000

Your bug report

#43442: Code stored with Subversion (SVN) cannot be retrieved from SWH

which was filed against the guix-patches package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to [email-masked].

-- 
43442: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=43442
GNU Bug Tracking System
Contact [email-masked] with problems

Subject: Re: bug#43442: Code stored with Subversion (SVN) cannot be retrieved from SWH
From: Ludovic Courtès <[email-masked]>
To: zimoun <[email-masked]>
Cc: [email-masked]
Date: Sat, 09 Mar 2024 23:34:24 +0100
List-Id: <debbugs-submit.debbugs.gnu.org>

Ludovic Courtès <[email-masked]> skribis:

> The attached patch does that:
>
> scheme@(guile-user)> (lookup-subversion-revision "https://scm.gforge.inria.fr/anonscm/svn/mpfi" 680)
> $12 = #<<revision> id: "72102de7605a2459ebcb016338ebbf1a997e8c8d" date: #<date nanosecond: 938388 second: 35 minute: 32 hour: 11 day: 6 month: 9 year: 2018 zone-offset: 0> directory: "5c89c025a4cd9d16befdfec12dfc23f7318d0d5b" directory-url: "https://archive.softwareheritage.org/api/1/directory/5c89c025a4cd9d16befdfec12dfc23f7318d0d5b/" parents-ids: ("16da41f1848d77a93aec565320b72b460c429b61") extra-headers: (("svn_repo_uuid" . "e2f78e0c-bb60-4709-9413-9660a31d4696") ("svn_revision" . "680"))>
> scheme@(guile-user)> (lookup-subversion-revision "https://scm.gforge.inria.fr/anonscm/svn/mpfi" 666)
> $13 = #<<revision> id: "148eb1e7206b111af4075c73c656e54c9efed6cb" date: #<date nanosecond: 654167 second: 2 minute: 52 hour: 12 day: 2 month: 8 year: 2018 zone-offset: 0> directory: "ed7b0bd7019fb85cd86d948a97c23b9d43aa8728" directory-url: "https://archive.softwareheritage.org/api/1/directory/ed7b0bd7019fb85cd86d948a97c23b9d43aa8728/" parents-ids: ("0ba2aa7e0d3fc0a1eb3ba72b32094515415ae47a") extra-headers: (("svn_repo_uuid" . "e2f78e0c-bb60-4709-9413-9660a31d4696") ("svn_revision" . "666"))>
>
> The implementation is pretty bad though, because it walks the revision
> history until it finds the right revision number—so you’re likely to
> reach the bandwidth rate limit before you’ve found the revision you’re
> looking for.
>
> More importantly, most svn origins cannot be found, or at least not
> by passing the URL as-is:
>
>   https://sympa.inria.fr/sympa/arc/swh-devel/2023-03/msg00009.html
>
> This whole hack looks like a dead end.
>
> It would be ideal if SWH would compute nar hashes, as you proposed:
>
>   https://gitlab.softwareheritage.org/swh/meta/-/issues/4538

Happy to report that this is solved with nar-sha256 ExtIDs at SWH, which
commit 0e73f933b291c7e154c7e019b6de1e2f3a97e4c1 uses to implement the
SWH fallback for Subversion checkouts.  Wo0t!

Ludo’.

Subject: [PATCH] Fixes init of #42162: gforge.inria.fr down Dec. 2020
From: zimoun <[email-masked]>
To: [email-masked]
Cc: [email-masked], [email-masked], zimoun <[email-masked]>
Date: Wed, 16 Sep 2020 10:14:11 +0200
List-Id: <debbugs-submit.debbugs.gnu.org>

Dear,

The first message in [1] explains the concrete issue.  To avoid to pollute the
already long thread discussing long term Tarball Archiving (which will not be
ready before the down), here is sent patches fixing the concrete issue.

Aside, note that the tarballs should be now ingested by Software Heritage via:

https://archive.softwareheritage.org/browse/search/?q=https%3A%2F%2Fguix.gnu.org%2Fsources.json&with_visit=true&with_content=true

but the issue is to reach them; well see [2].

>From [1], the non-archived packages (yet) are:

--8<---------------cut here---------------start------------->8---
  scheme@(guile-user)> ,pp (lset-difference eq? $7 $8)
  $11 = (
   #<package [email-masked] gnu/packages/statistics.scm:3931 7f632401a640>
   #<package [email-masked] gnu/packages/multiprecision.scm:158 7f632ee3adc0>
   #<package [email-masked] gnu/packages/algebra.scm:103 7f6323ea1280>
   #<package [email-masked] gnu/packages/algebra.scm:658 7f6323eb4960>
   #<package [email-masked] gnu/packages/algebra.scm:322 7f6323eb4dc0>)
--8<---------------cut here---------------end--------------->8---

However, some have migrated to gitlab:

 - r-spams
     <https://gitlab.inria.fr/thoth/spams-devel>
 - gf2x
     <https://gitlab.inria.fr/gf2x/gf2x>
 - cmh
    <https://prod-gitlab.inria.fr/cmh/cmh>

Note that repackage 'r-spams' from the Git checkout needs some love and is not
straightforward.  (Not tried yet the 2 others).

The aim of switching the 2 packages from 'url-fetch' to 'svn-fetch' is
twofolds, test case for improving:

 - "guix lint -c archival" (support 'svn' and 'hg')
 - the fallback to SWH (for non-git VCS source)

WDYT?

[1]: <http://issues.guix.gnu.org/issue/42162>
[2] <https://forge.softwareheritage.org/T2430>

All the best,
simon

PS:
I am not sure how to deal with <[email-masked]> to "clone" (split)
the bug #42162.  That's why this one. :-)

zimoun (2):
  gnu: mpfi: Replace 'url-fetch' by 'svn-fetch'.
  gnu: gmp-ecm: Replace 'url-fetch' by 'svn-fetch'.

 gnu/packages/algebra.scm        | 28 +++++++++++++++++++++-------
 gnu/packages/multiprecision.scm | 13 ++++++++-----
 2 files changed, 29 insertions(+), 12 deletions(-)

base-commit: f5163902d7c3cfed5a97033f38e92d7158b19fa8
-- 
2.28.0