Re: [PATCH] Add 12 rubygems.

[Ludovic Courtès]

Ben Woodcroft <address@hidden> skribis:

> On 29/12/15 15:46, Ben Woodcroft wrote:
>>
>> Unfortunately none of these builds are reproducible because rubygems
>> in Guix generally aren't. For one, this is because .gem files are
>> archives whose contents are timestamped.
> I should clarify. What I meant was the cache .gem files
>
> /gnu/store/ib83mg5zsyr5x2w0m3i1f84gdvdbp5x9-ruby-ascii85-1.0.2/lib/ruby/gems/2.2.0/cache$
> tar tvf Ascii85-1.0.2.gem |head
> -r--r--r-- wheel/wheel     703 2015-12-27 22:44 metadata.gz
> -r--r--r-- wheel/wheel    7436 2015-12-27 22:44 data.tar.gz
> -r--r--r-- wheel/wheel     268 2015-12-27 22:44 checksums.yaml.gz

We should arrange so that gems are created with a fixed timestamp and
UID/GID, and a well-defined file ordering, as with:

  address@hidden --sort=name --owner=root:0 --group=root:0

We also need to make sure gzip is always run with -n/--no-name.  That
way, the gz files above will not include an additional timestamp.

>From what I can see in
<git://git.debian.org/git/reproducible/notes.git>, this is not addressed
yet in other distros.

HTH,
Ludo’.