* bug#61852: ‘scheme48-prescheme’ is not reproducible
@ 2023-02-27 21:03 Ludovic Courtès
2023-02-28 5:55 ` Andrew Whatson via Bug reports for GNU Guix
0 siblings, 1 reply; 4+ messages in thread
From: Ludovic Courtès @ 2023-02-27 21:03 UTC (permalink / raw)
To: 61852; +Cc: Andrew Whatson
Hi again Andrew,
It turns out that the package is not reproducible:
--8<---------------cut here---------------start------------->8---
$ ./pre-inst-env guix challenge scheme48-prescheme
/gnu/store/qkby7f4nr3lxlm16zmswmka5hgfs6spw-scheme48-prescheme-1.9.2 contents differ:
no local build for '/gnu/store/qkby7f4nr3lxlm16zmswmka5hgfs6spw-scheme48-prescheme-1.9.2'
https://ci.guix.gnu.org/nar/lzip/qkby7f4nr3lxlm16zmswmka5hgfs6spw-scheme48-prescheme-1.9.2: 0fahr4s5qz980zz96xmrwf8r87w56kicxr8s80fvis98q7v5czll
https://bordeaux.guix.gnu.org/nar/lzip/qkby7f4nr3lxlm16zmswmka5hgfs6spw-scheme48-prescheme-1.9.2: 0jphmcmijk68phwq93qbzszy5pdmnasa3qdcp2nc5wqc25a7kpxk
differing file:
/lib/scheme48-1.9.2/prescheme.image
1 store items were analyzed:
- 0 (0.0%) were identical
- 1 (100.0%) differed
- 0 (0.0%) were inconclusive
$ git log |head -1
commit cf9e0508b26196dc985302776d860a0359652c59
--8<---------------cut here---------------end--------------->8---
Any idea what might be wrong?
Thanks,
Ludo’.
^ permalink raw reply [flat|nested] 4+ messages in thread
* bug#61852: ‘scheme48-prescheme’ is not reproducible
2023-02-27 21:03 bug#61852: ‘scheme48-prescheme’ is not reproducible Ludovic Courtès
@ 2023-02-28 5:55 ` Andrew Whatson via Bug reports for GNU Guix
2023-03-03 10:45 ` Ludovic Courtès
0 siblings, 1 reply; 4+ messages in thread
From: Andrew Whatson via Bug reports for GNU Guix @ 2023-02-28 5:55 UTC (permalink / raw)
To: Ludovic Courtès, 61852
Ludovic Courtès wrote:
> Hi again Andrew,
>
> It turns out that the package is not reproducible:
>
> --8<---------------cut here---------------start------------->8---
> $ ./pre-inst-env guix challenge scheme48-prescheme
> /gnu/store/qkby7f4nr3lxlm16zmswmka5hgfs6spw-scheme48-prescheme-1.9.2 contents differ:
> no local build for '/gnu/store/qkby7f4nr3lxlm16zmswmka5hgfs6spw-scheme48-prescheme-1.9.2'
> https://ci.guix.gnu.org/nar/lzip/qkby7f4nr3lxlm16zmswmka5hgfs6spw-scheme48-prescheme-1.9.2: 0fahr4s5qz980zz96xmrwf8r87w56kicxr8s80fvis98q7v5czll
> https://bordeaux.guix.gnu.org/nar/lzip/qkby7f4nr3lxlm16zmswmka5hgfs6spw-scheme48-prescheme-1.9.2: 0jphmcmijk68phwq93qbzszy5pdmnasa3qdcp2nc5wqc25a7kpxk
> differing file:
> /lib/scheme48-1.9.2/prescheme.image
>
> 1 store items were analyzed:
> - 0 (0.0%) were identical
> - 1 (100.0%) differed
> - 0 (0.0%) were inconclusive
> $ git log |head -1
> commit cf9e0508b26196dc985302776d860a0359652c59
> --8<---------------cut here---------------end--------------->8---
>
> Any idea what might be wrong?
Hmm, interesting!
This is an image produced by Scheme 48 dumping its VM state into a file
which can be loaded later to save parsing/expansion time. This is the
same technique used by Scheme 48 to produce its own initial image. It
looks like the "scheme48" package has the same problem:
```
$ guix challenge scheme48
/gnu/store/9c47l5cn60zrr9sm0hn55zibf8zmv33l-scheme48-1.9.2 contents differ:
local hash: 0pyygj4nf8fw2xpciy81d01r2b2339bxhgpfdn2zq2wqvsn2ycra
https://ci.guix.gnu.org/nar/lzip/9c47l5cn60zrr9sm0hn55zibf8zmv33l-scheme48-1.9.2:
0pyygj4nf8fw2xpciy81d01r2b2339bxhgpfdn2zq2wqvsn2ycra
https://bordeaux.guix.gnu.org/nar/lzip/9c47l5cn60zrr9sm0hn55zibf8zmv33l-scheme48-1.9.2:
12wxxqxmpdqgg2fzbcbm68h1jqynz9gqhxzalyspqq7hh2fgr46k
differing file:
/lib/scheme48-1.9.2/scheme48.image
1 store items were analyzed:
- 0 (0.0%) were identical
- 1 (100.0%) differed
- 0 (0.0%) were inconclusive
```
Comparing hex dumps of the files, there are significant differences, and
a quick dive through the image dumping code leads into VM and garbage
collector details which are over my head.
I guess patching Scheme 48 to build deterministic images is out-of-scope
and maybe an issue for upstream.
> Thanks,
> Ludo’.
Cheers!
Andrew
^ permalink raw reply [flat|nested] 4+ messages in thread
* bug#61852: ‘scheme48-prescheme’ is not reproducible
2023-02-28 5:55 ` Andrew Whatson via Bug reports for GNU Guix
@ 2023-03-03 10:45 ` Ludovic Courtès
2023-03-06 10:34 ` Andrew Whatson via Bug reports for GNU Guix
0 siblings, 1 reply; 4+ messages in thread
From: Ludovic Courtès @ 2023-03-03 10:45 UTC (permalink / raw)
To: Andrew Whatson; +Cc: 61852
Hi,
Andrew Whatson <whatson@tailcall.au> skribis:
> Comparing hex dumps of the files, there are significant differences,
> and a quick dive through the image dumping code leads into VM and
> garbage collector details which are over my head.
>
> I guess patching Scheme 48 to build deterministic images is
> out-of-scope and maybe an issue for upstream.
Yes, probably! Would you mind reporting it upstream?
Thanks,
Ludo’.
^ permalink raw reply [flat|nested] 4+ messages in thread
* bug#61852: ‘scheme48-prescheme’ is not reproducible
2023-03-03 10:45 ` Ludovic Courtès
@ 2023-03-06 10:34 ` Andrew Whatson via Bug reports for GNU Guix
0 siblings, 0 replies; 4+ messages in thread
From: Andrew Whatson via Bug reports for GNU Guix @ 2023-03-06 10:34 UTC (permalink / raw)
To: Ludovic Courtès; +Cc: 61852
Ludovic Courtès wrote:
> Hi,
>
> Andrew Whatson <whatson@tailcall.au> skribis:
>
>> Comparing hex dumps of the files, there are significant differences,
>> and a quick dive through the image dumping code leads into VM and
>> garbage collector details which are over my head.
>>
>> I guess patching Scheme 48 to build deterministic images is
>> out-of-scope and maybe an issue for upstream.
>
> Yes, probably! Would you mind reporting it upstream?
No worries, I've emailed the Scheme 48 list about the issue.
Cheers,
Andrew
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2023-03-06 15:46 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2023-02-27 21:03 bug#61852: ‘scheme48-prescheme’ is not reproducible Ludovic Courtès
2023-02-28 5:55 ` Andrew Whatson via Bug reports for GNU Guix
2023-03-03 10:45 ` Ludovic Courtès
2023-03-06 10:34 ` Andrew Whatson via Bug reports for GNU Guix
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