[Bug 1294858] Re: Installer does not install all language support packages

[GunChleoc]

Me too - my language was just gone. Another odd thing I noticed that
might be related, when I first installed Ubuntu, I had to pick English,
because my languages doesn't have the coverage yet - which is fine. The
problem is, why do I have to install all Englishes under the sun?

I think we should follow the fallback locale scheme defined in the
CLDR/ICU here.  http://userguide.icu-project.org/locale#TOC-Fallback

Which means that "en" and only "en" is the one locale that always gets
installed  (and not "en_CA" , "en_GB"  etc in addition to that), and
then everything in your chosen locale's fallback chain. For example, for
the "fr_FR.utf8 at EURO" locale, the installed locales in order of
preference would be:

fr_FR at EURO
fr_FR
fr
en

The locale selection behaviour should be identical for all
installers/updaters/language option changes, because of orthogonality.
The chain for an individual package would ideally be:

Preliminary: The user is not allowed to select plain "en" as a locale,
but it has to be "en_CA", "en_US", or "en_GB" etc)

1. Try to get the locale selected by user for the particular package,
e.g. Firefox  (unless it's plain "en", so the user will be able to get
new language packages as they become available).

2. Try to get the system locale or any of its fallback locales (e.g. for
Breton, try French before you try English).

3. All else failing, get "en".

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https://bugs.launchpad.net/bugs/1294858

Title:
  Installer does not install all language support packages

Status in “ubiquity” package in Ubuntu:
  Confirmed

Bug description:
  My very first own package, mythes-sv, has just been sponsored into
  Debian and Ubuntu. :)

  It's a Swedish thesaurus for LibreOffice, and if I install Swedish via
  language-selector, it's pulled as expected through /usr/share
  /language-selector/data/pkg_depends.

  However, when I did a fresh install with Swedish as the selected
  language, and connected to Internet, mythes-sv was not installed at
  first login. My first theory was that it might be due to the fact that
  it's in universe, but when I opened language-selector, there were
  several other language support packages missing, most of them in main.

  I would think that the desired behavior is that as long as you are
  connected to the net while installing, the installer should pull all
  the applicable language support packages, not only some of them. So
  the only situation when language-selector should need to prompt you
  about not installed language support packages when you open it should
  be if one or more packages were added to the archive.

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