Latest revision as of 13:24, 26 February 2016

Langpacks Installation With RPM Weak Dependencies

Summary

Langpacks installations is re-designed using language meta-packages langpacks-<langcode> and RPM weak dependencies (Supplements tag).

Owner

Name: Parag Nemade

Email: pnemade at fedoraproject dot org

Name: Jan Silhan

Email: jsilhan at fedoraproject dot org

Release notes owner:

Current status

Targeted release: Fedora 24
Last updated: 26-Feb-2016
Tracker bug: #1308555

Detailed Description

This change will remove the need of having the dnf langpacks plugin in Fedora

This is similar to what we have dnf langpacks plugin which is already in Fedora but there is one missing thing that this plugin currently does not provide automatic installation of langpacks. E.g. if you enable or install Fedora in Japanese language then installation of any base package like libreoffice-core or man-pages are not installing automatically libreoffice-langpack-ja or man-pages-ja. This is because dnf is not providing required hook to re-resolve the transaction unlike yum. But now with using RPM tags or weak dependencies like Supplements, we just need to ensure we have langpacks-xx meta-package is already installed on the system and when a base package is getting installed, it will pull its langpack for that xx language automatically in the transaction set.

This will help in anaconda installation also. When particular set of languages are selected in anaconda then anaconda should pull all the required langpacks in the same initial installation.

There are no plans to remove/retire dnf-langpacks package in Fedora yet.

Benefit to Fedora

Users will get langpacks for the given language installed. This Change provides language meta-packages which user need to just install and they will get all available langpacks for which base package is already installed on the system.

Scope

Proposal owners: Check all langpacks providing packages add Supplements tag in their each langpack subpackage. We have now added langpacks meta-package in F24+ which provides around 79 language meta-packages. We are tracking the progress here

Other developers: To all other developers of packages who provides langpacks, they need to add the Supplements tag as given in this Langpacks guideline to each langpack subpackage.

Release engineering: N/A

Policies and guidelines: Worked with FPC on this new Langpacks guideline

Upgrade/compatibility impact

None.

How To Test

QA:Langpacks

User Experience

Users will get langpacks installed when they do initial installation of Fedora using anaconda. Users can enable languages by installing meta-package langpacks-<langcode>. Users can find which languages are providing langpacks by executing following command.

dnf list "langpacks-*"

Dependencies

No Other Change depend on this.

Contingency Plan

Contingency mechanism: If this change is not completed by final development freeze then we need to target this for F25. We are just proposing to add additional information in langpacks packages that is Supplements tag. This should not affect individual langpacks packages installation by dnf or we have langpacks plugin which can be used to fully install langpacks for any language where base packages are already installed on the system.
Contingency deadline: I don't think we will need anything to revert or apply any contingency plan here if this is not completed by beta freeze.
Blocks release? No
Blocks product? N/A

Documentation

Need to add about this in the Documentation_I18n_Beat

Release Notes

@@ Line 23: / Line 23: @@
 == Summary ==
-Langpacks installations is re-designed using language metapackages langpacks-<langcode> and RPM weak dependencies (Supplements tag).
+Langpacks installations is re-designed using language meta-packages langpacks-<langcode> and RPM weak dependencies (Supplements tag).
 == Owner ==
@@ Line 33: / Line 33: @@
 * Email: jsilhan at fedoraproject dot org
 * Release notes owner: <!--- To be assigned by docs team [[User:FASAccountName| Release notes owner name]] <email address> -->
@@ Line 42: / Line 41: @@
 == Current status ==
 * Targeted release: [[Releases/24 | Fedora 24 ]]
-* Last updated: 25-Feb-2016
+* Last updated: 26-Feb-2016
 <!-- After the change proposal is accepted by FESCo, tracking bug is created in Bugzilla and linked to this page
 Bugzilla states meaning as usual:
@@ Line 54: / Line 53: @@
 == Detailed Description ==
+{{admon/note|This change will remove the need of having the dnf langpacks plugin in Fedora}}
 This is similar to what we have dnf langpacks plugin which is already in Fedora but there is one missing thing that this plugin currently does not provide automatic installation of langpacks. E.g. if you enable or install Fedora in Japanese language then installation of any base package like libreoffice-core or man-pages are not installing automatically libreoffice-langpack-ja or man-pages-ja. This is because dnf is not providing required hook to re-resolve the transaction unlike yum.
-But now with using RPM tags or weak dependencies like Supplements, we just need to ensure we have langpacks-xx metapackage is already installed on the system and when a base package is getting installed, it will pull its langpack for that xx language automatically in the transaction set.
+But now with using RPM tags or weak dependencies like Supplements, we just need to ensure we have langpacks-xx meta-package is already installed on the system and when a base package is getting installed, it will pull its langpack for that xx language automatically in the transaction set.
 This will help in anaconda installation also. When particular set of languages are selected in anaconda then anaconda should pull all the required langpacks in the same initial installation.
+There are no plans to remove/retire dnf-langpacks package in Fedora yet.
 == Benefit to Fedora ==
-Users will get langpacks for the given language installed. This Change provides language metapackages which user need to just install and they will get all available langpacks for which base package is already installed on the system.
+Users will get langpacks for the given language installed. This Change provides language meta-packages which user need to just install and they will get all available langpacks for which base package is already installed on the system.
 == Scope ==
@@ Line 72: / Line 74: @@
 <!-- Does this feature require coordination with release engineering (e.g. changes to installer image generation or update package delivery)?  Is a mass rebuid required?  If a rel-eng ticket exists, add a link here.  -->
-* Policies and guidelines: Working with FPC on this new [https://fedoraproject.org/wiki/PackagingDrafts/Langpack langpacks guideline] <!-- REQUIRED FOR SYSTEM WIDE CHANGES -->
+* Policies and guidelines: Worked with FPC on this new [https://fedoraproject.org/wiki/Packaging:Langpacks Langpacks guideline] <!-- REQUIRED FOR SYSTEM WIDE CHANGES -->
-<!-- Do the packaging guidelines or other documents need to be updated for this feature?  If so, does it need to happen before or after the implementation is done?  If a FPC ticket exists, add a link here. -->]
+<!-- Do the packaging guidelines or other documents need to be updated for this feature?  If so, does it need to happen before or after the implementation is done?  If a FPC ticket exists, add a link here. -->
 == Upgrade/compatibility impact ==
@@ Line 83: / Line 85: @@
 == User Experience ==
-Users will get langpacks installed when they do initial installation of Fedora using anaconda. Users can enable languages by installing metapackage langpacks-<langcode>. Users can find which languages are providing langpacks by executing following command.
+Users will get langpacks installed when they do initial installation of Fedora using anaconda. Users can enable languages by installing meta-package langpacks-<langcode>. Users can find which languages are providing langpacks by executing following command.
 <pre>dnf list "langpacks-*"</pre>

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