bug#57304: Fix mm-common reproduciblility issues

[Vagrant Cascadian]

On 2022-08-30, Ludovic Courtès wrote:
> Vagrant Cascadian <vagrant@reproducible-builds.org> skribis:
>> The userid used during the build is embedded in a shipped tarball in the
>> mm-common package. Some abbreviated diffoscope output from guix
>> challenge against builds from ci.guix.gnu.org and bordeax.guix.gnu.org:
>
> Good catch.
>
>> The attached patch fixes this by setting the user, group, uid and gid
>> consistently.
>>
>>   $ guix refresh --list-dependent mm-common
>>   Building the following 1138 packages would ensure 2236 dependent
>>   packages are rebuilt: ...
>>
>> Looks like it will have to wait for core-updates at least...
>
> Yeah, let’s apply it on ‘core-updates’.
>
>> From 4b359c9bbc918e6dcf1cab1141a9651d6d7bf271 Mon Sep 17 00:00:00 2001
>> From: Vagrant Cascadian <vagrant@reproducible-builds.org>
>> Date: Fri, 19 Aug 2022 19:32:08 -0700
>> Subject: [PATCH] gnu: mm-common: Build reproducibly.
>>
>> * gnu/packages/patches/mm-common-consistent-user-and-group-in-tarball.patch:
>>   New file.
>> * gnu/local.mk (dist_patch_DATA): Add patch.
>> * gnu/packages/gnome.scm (mm-common)[source]: Add patch.
>
> [...]
>
>> +  %D%/packages/patches/mm-common-consistent-user-and-group-in-tarball.patch 
>> \
>
> I’d suggest a shorter name to appease ‘tar’, say
> ‘mm-common-reproducible-tarball.patch’.

I do not think tar is too worried about that anymore since the updated
tar format, but it is easier on human eyes, so I'll go along with it. :)

Pushed 5ce7178eb8375716625de14f59e227fdd9b8d9f0 to core-updates!


live well,
  vagrant

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