** Also affects: apt (Ubuntu Groovy)
   Importance: Undecided
       Status: New

** Also affects: apt (Ubuntu Xenial)
   Importance: Undecided
       Status: New

** Also affects: apt (Ubuntu Focal)
   Importance: Undecided
       Status: New

** Also affects: apt (Ubuntu Bionic)
   Importance: Undecided
       Status: New

** Description changed:

  [Impact]
  In bug 1161743 we discovered that if a system is configured with multiple 
locales, only the locales of the user who generated the apt-cache will be 
available for translated descriptions.
  
  [Test case]
+ An automated test case has been included as a snippet in  
test/integration/test-bug-490000-search-in-all-translations which runs during 
autopkgtest. That's sufficient for validation.
+ 
+ Manual test:
  
  # apt install locales-all # get the locale
  # export LANG=sv_SE.UTF-8
  # locale
  LANG=sv_SE.UTF-8
  LANGUAGE=
  LC_CTYPE="sv_SE.UTF-8"
  LC_NUMERIC="sv_SE.UTF-8"
  LC_TIME="sv_SE.UTF-8"
  LC_COLLATE="sv_SE.UTF-8"
  LC_MONETARY="sv_SE.UTF-8"
  LC_MESSAGES="sv_SE.UTF-8"
  LC_PAPER="sv_SE.UTF-8"
  LC_NAME="sv_SE.UTF-8"
  LC_ADDRESS="sv_SE.UTF-8"
  LC_TELEPHONE="sv_SE.UTF-8"
  LC_MEASUREMENT="sv_SE.UTF-8"
  LC_IDENTIFICATION="sv_SE.UTF-8"
  LC_ALL=
  # apt update
  # apt-cache show tasksel | grep Desc
  Description-sv: tool for selecting tasks for installation on Debian systems
  Description-md5: cbbb747708986d11ea77c80b9b038fec
  # apt-cache showpkg tasksel
  Package: tasksel
  Versions:
  3.34ubuntu16 
(/var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_groovy_main_binary-amd64_Packages)
   Description Language:
                   File: 
/var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_groovy_main_binary-amd64_Packages
                    MD5: cbbb747708986d11ea77c80b9b038fec
   Description Language: sv
                   File: 
/var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_groovy_main_i18n_Translation-sv
                    MD5: cbbb747708986d11ea77c80b9b038fec
   Description Language: en
                   File: 
/var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_groovy_main_i18n_Translation-en
                    MD5: cbbb747708986d11ea77c80b9b038fec
  [...]
  
  So far so good, but now assume the root user actually has C configured
  as locale, and e.g. runs apt-cache show (or apt-daily.service does an
  update):
  
  root@g:~# rm /var/cache/apt/*.bin
  root@g:~# LANG=C apt-cache  show tasksel
  [...]
  Description-en: tool for selecting tasks for installation on Debian systems
   This package provides 'tasksel', a simple interface for users who
   want to configure their system to perform a specific task.
  
  root@g:~# apt-cache  showpkg tasksel
  Package: tasksel
  Versions:
  3.34ubuntu16 
(/var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_groovy_main_binary-amd64_Packages)
   Description Language:
                   File: 
/var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_groovy_main_binary-amd64_Packages
                    MD5: cbbb747708986d11ea77c80b9b038fec
   Description Language: en
                   File: 
/var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_groovy_main_i18n_Translation-en
                    MD5: cbbb747708986d11ea77c80b9b038fec
  
  This should show the sv locale as well given that it's still around
  (also we are still running with LANG=sv_SE.UTF-8), but it only generated
  the cache with the english language description in here.
  
  [Where problems could occur]
- Unknown so far, we've not investigated the cause or solution yet.
- 
- [Other Info]
- N/A
+ People might end up seeing a wrong translation if other code paths are wrong, 
but then they'd already see them if they explicitly configured multiple 
languages and then switched the preferred one.

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https://bugs.launchpad.net/bugs/1907850

Title:
  Cache not generated for all translations

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