bug#58031: LibreOffice 7.3.5.2 is not reproducible

[Ludovic Courtès]

There’s a single file that differs:

--8<---------------cut here---------------start------------->8---
$ guix describe
Generation 228  Sep 12 2022 08:17:50    (current)
  guix e3ed1d0
    repository URL: https://git.savannah.gnu.org/git/guix.git
    branch: master
    commit: e3ed1d09f9d490eff6becd6e9cb85a4d36c48e85
$ guix challenge libreoffice
/gnu/store/652zk4gzcnwpq90lbzvr1gk5q2p3flf7-libreoffice-7.3.5.2 contents differ:
  no local build for 
'/gnu/store/652zk4gzcnwpq90lbzvr1gk5q2p3flf7-libreoffice-7.3.5.2'
  
https://ci.guix.gnu.org/nar/lzip/652zk4gzcnwpq90lbzvr1gk5q2p3flf7-libreoffice-7.3.5.2:
 1hp4dknx01s2lylf0bfagfvf04naaayrhyjbwa5l2iv0vqxdbcx8
  
https://bordeaux.guix.gnu.org/nar/lzip/652zk4gzcnwpq90lbzvr1gk5q2p3flf7-libreoffice-7.3.5.2:
 10vraihz73428z453wj7546ic98bkv3mkdr5222lg6grrfc49rp3
  differing file:
    /lib/libreoffice/share/template/common/draw/bpmn.otg

1 store items were analyzed:
  - 0 (0.0%) were identical
  - 1 (100.0%) differed
  - 0 (0.0%) were inconclusive
--8<---------------cut here---------------end--------------->8---

It’s apparently a zip file and the difference lies in mtimes:

--8<---------------cut here---------------start------------->8---
$ guix challenge libreoffice --diff=diffoscope
/gnu/store/652zk4gzcnwpq90lbzvr1gk5q2p3flf7-libreoffice-7.3.5.2 contents differ:
  no local build for 
'/gnu/store/652zk4gzcnwpq90lbzvr1gk5q2p3flf7-libreoffice-7.3.5.2'
  
https://ci.guix.gnu.org/nar/lzip/652zk4gzcnwpq90lbzvr1gk5q2p3flf7-libreoffice-7.3.5.2:
 1hp4dknx01s2lylf0bfagfvf04naaayrhyjbwa5l2iv0vqxdbcx8
  
https://bordeaux.guix.gnu.org/nar/lzip/652zk4gzcnwpq90lbzvr1gk5q2p3flf7-libreoffice-7.3.5.2:
 10vraihz73428z453wj7546ic98bkv3mkdr5222lg6grrfc49rp3
 bordeaux.guix.gnu.org  125.3MiB                       10.5MiB/s 00:12 
[##################] 100.0%--- /tmp/guix-directory.7C81ON
+++ /tmp/guix-directory.n0WtkB
│   --- /tmp/guix-directory.7C81ON/lib
├── +++ /tmp/guix-directory.n0WtkB/lib
│ │   --- /tmp/guix-directory.7C81ON/lib/libreoffice
│ ├── +++ /tmp/guix-directory.n0WtkB/lib/libreoffice
│ │ │   --- /tmp/guix-directory.7C81ON/lib/libreoffice/share
│ │ ├── +++ /tmp/guix-directory.n0WtkB/lib/libreoffice/share
│ │ │ │   --- /tmp/guix-directory.7C81ON/lib/libreoffice/share/template
│ │ │ ├── +++ /tmp/guix-directory.n0WtkB/lib/libreoffice/share/template
│ │ │ │ │   --- /tmp/guix-directory.7C81ON/lib/libreoffice/share/template/common
│ │ │ │ ├── +++ /tmp/guix-directory.n0WtkB/lib/libreoffice/share/template/common
│ │ │ │ │ │   --- 
/tmp/guix-directory.7C81ON/lib/libreoffice/share/template/common/draw
│ │ │ │ │ ├── +++ 
/tmp/guix-directory.n0WtkB/lib/libreoffice/share/template/common/draw
│ │ │ │ │ │ │   --- 
/tmp/guix-directory.7C81ON/lib/libreoffice/share/template/common/draw/bpmn.otg
│ │ │ │ │ │ ├── +++ 
/tmp/guix-directory.n0WtkB/lib/libreoffice/share/template/common/draw/bpmn.otg
│ │ │ │ │ │ │ ├── zipinfo {}
│ │ │ │ │ │ │ │ @@ -1,8 +1,8 @@
│ │ │ │ │ │ │ │  Zip file size: 36563 bytes, number of entries: 6
│ │ │ │ │ │ │ │ --rw-r--r--  3.0 unx       52 b- stor 22-Aug-29 17:52 mimetype
│ │ │ │ │ │ │ │ --rw-r--r--  3.0 unx   281529 t- defN 22-Aug-29 17:52 
content.xml
│ │ │ │ │ │ │ │ --rw-r--r--  3.0 unx      711 t- defN 22-Aug-29 17:52 
META-INF/manifest.xml
│ │ │ │ │ │ │ │ --rw-r--r--  3.0 unx     1096 t- defN 22-Aug-29 17:52 meta.xml
│ │ │ │ │ │ │ │ --rw-r--r--  3.0 unx    25395 t- defN 22-Aug-29 17:52 styles.xml
│ │ │ │ │ │ │ │ --rw-r--r--  3.0 unx     4680 b- defN 22-Aug-29 17:52 
Thumbnails/thumbnail.png
│ │ │ │ │ │ │ │ +-rw-r--r--  3.0 unx       52 b- stor 22-Aug-16 02:46 mimetype
│ │ │ │ │ │ │ │ +-rw-r--r--  3.0 unx   281529 t- defN 22-Aug-16 02:46 
content.xml
│ │ │ │ │ │ │ │ +-rw-r--r--  3.0 unx      711 t- defN 22-Aug-16 02:46 
META-INF/manifest.xml
│ │ │ │ │ │ │ │ +-rw-r--r--  3.0 unx     1096 t- defN 22-Aug-16 02:46 meta.xml
│ │ │ │ │ │ │ │ +-rw-r--r--  3.0 unx    25395 t- defN 22-Aug-16 02:46 styles.xml
│ │ │ │ │ │ │ │ +-rw-r--r--  3.0 unx     4680 b- defN 22-Aug-16 02:46 
Thumbnails/thumbnail.png
│ │ │ │ │ │ │ │  6 files, 313463 bytes uncompressed, 35921 bytes compressed:  
88.5%

1 store items were analyzed:
  - 0 (0.0%) were identical
  - 1 (100.0%) differed
  - 0 (0.0%) were inconclusive
--8<---------------cut here---------------end--------------->8---

We could add a phase that resets timestamps in the zip file, or we could
tweak the build process that produces it.

Ludo’.