From: Eli Schwartz <eschwartz93@gmail.com>
To: "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>
Cc: "Git List" <git@vger.kernel.org>,
"brian m. carlson" <sandals@crustytoothpaste.net>,
"René Scharfe" <l.s.r@web.de>,
"Johannes Schindelin" <Johannes.Schindelin@gmx.de>,
"Jeff King" <peff@peff.net>
Subject: Re: Stability of git-archive, breaking (?) the Github universe, and a possible solution
Date: Tue, 31 Jan 2023 04:11:51 -0500 [thread overview]
Message-ID: <fd39ed5f-cee4-0d60-c0c2-fae18246fb53@gmail.com> (raw)
In-Reply-To: <230131.86357rrtsg.gmgdl@evledraar.gmail.com>
Quick response for now...
On 1/31/23 2:49 AM, Ævar Arnfjörð Bjarmason wrote:
> So first, aside from whatever the git project does about the default,
> have you tried running the newer git version with a
> tar.tgz.command='gzip -cn' and seeing if it's compatible with the old
> version?
>
> It's unclear from the blog post's "we are reverting this change for now"
> whether that meant a revert of the git version (probably), or a revert
> back to using gzip(1).
I do not know which one Github internally did, but I can confirm that
the gzipped tarballs which github started shipping, when gunzipped,
produced an uncompressed tarball that was byte-identical to uncompressed
editions of the historic ones.
i.e. you could do this:
```
wget ${important_archive_release}
gzip -dc < ${important_archive_localfile} | gzip -cn >
${important_archive_localfile}.new
```
And:
- they have different checksums
- the .new file has reverted to the same checksum as historic versions
from last year that are frozen into manifests
That was part of my original investigation, before I located the public
conversations.
--
Eli Schwartz
next prev parent reply other threads:[~2023-01-31 9:16 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-31 0:06 Stability of git-archive, breaking (?) the Github universe, and a possible solution Eli Schwartz
2023-01-31 7:49 ` Ævar Arnfjörð Bjarmason
2023-01-31 9:11 ` Eli Schwartz [this message]
2023-02-02 9:32 ` [PATCH 0/9] git archive: use gzip again by default, document output stabilty Ævar Arnfjörð Bjarmason
2023-02-02 9:32 ` [PATCH 1/9] archive & tar config docs: de-duplicate configuration section Ævar Arnfjörð Bjarmason
2023-02-02 9:32 ` [PATCH 2/9] git config docs: document "tar.<format>.{command,remote}" Ævar Arnfjörð Bjarmason
2023-02-02 9:32 ` [PATCH 3/9] archiver API: make the "flags" in "struct archiver" an enum Ævar Arnfjörð Bjarmason
2023-02-02 9:32 ` [PATCH 4/9] archive: omit the shell for built-in "command" filters Ævar Arnfjörð Bjarmason
2023-02-02 9:32 ` [PATCH 5/9] archive-tar.c: move internal gzip implementation to a function Ævar Arnfjörð Bjarmason
2023-02-02 9:32 ` [PATCH 6/9] archive: use "gzip -cn" for stability, not "git archive gzip" Ævar Arnfjörð Bjarmason
2023-02-02 9:32 ` [PATCH 7/9] test-lib.sh: add a lazy GZIP prerequisite Ævar Arnfjörð Bjarmason
2023-02-02 9:32 ` [PATCH 8/9] archive tests: test for "gzip -cn" and "git archive gzip" stability Ævar Arnfjörð Bjarmason
2023-02-02 9:32 ` [PATCH 9/9] git archive docs: document output non-stability Ævar Arnfjörð Bjarmason
2023-02-02 10:25 ` brian m. carlson
2023-02-02 10:30 ` Ævar Arnfjörð Bjarmason
2023-02-02 16:34 ` Junio C Hamano
2023-02-04 17:46 ` brian m. carlson
2023-02-02 16:17 ` [PATCH 0/9] git archive: use gzip again by default, document output stabilty Phillip Wood
2023-02-02 16:40 ` Junio C Hamano
2023-02-03 13:49 ` Ævar Arnfjörð Bjarmason
2023-02-06 14:46 ` Phillip Wood
2023-02-03 15:47 ` Theodore Ts'o
2023-02-02 16:25 ` Junio C Hamano
2023-02-04 18:08 ` René Scharfe
2023-02-05 21:30 ` Ævar Arnfjörð Bjarmason
2023-02-12 17:41 ` René Scharfe
2023-02-02 19:23 ` Raymond E. Pasco
2023-02-03 8:06 ` [PATCH] archive: document output stability concerns Raymond E. Pasco
2023-01-31 9:54 ` Stability of git-archive, breaking (?) the Github universe, and a possible solution brian m. carlson
2023-01-31 11:31 ` Ævar Arnfjörð Bjarmason
2023-01-31 15:05 ` Konstantin Ryabitsev
2023-01-31 22:32 ` brian m. carlson
2023-02-01 9:40 ` Ævar Arnfjörð Bjarmason
2023-02-01 11:34 ` demerphq
2023-02-01 12:21 ` Michal Suchánek
2023-02-01 12:48 ` demerphq
2023-02-01 13:43 ` Ævar Arnfjörð Bjarmason
2023-02-01 15:21 ` demerphq
2023-02-01 18:56 ` Theodore Ts'o
2023-02-02 21:19 ` Joey Hess
2023-02-03 4:02 ` Theodore Ts'o
2023-02-03 13:32 ` Ævar Arnfjörð Bjarmason
2023-02-01 23:16 ` brian m. carlson
2023-02-01 23:37 ` Junio C Hamano
2023-02-02 23:01 ` brian m. carlson
2023-02-02 23:47 ` rsbecker
2023-02-03 13:18 ` Ævar Arnfjörð Bjarmason
2023-02-02 0:42 ` Ævar Arnfjörð Bjarmason
2023-02-01 12:17 ` Raymond E. Pasco
2023-01-31 15:56 ` Eli Schwartz
2023-01-31 16:20 ` Konstantin Ryabitsev
2023-01-31 16:34 ` Eli Schwartz
2023-01-31 20:34 ` Konstantin Ryabitsev
2023-01-31 20:45 ` Michal Suchánek
2023-02-01 1:33 ` brian m. carlson
2023-02-01 12:42 ` Ævar Arnfjörð Bjarmason
2023-02-01 23:18 ` brian m. carlson
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