Composer/Future work

This page contains some ideas on improving Composer support in MediaWiki.

Preparing MediaWiki

Reuse your MediaWiki installation, in the root directory fill in a composer.json file:

{
    "name": "mediawiki/core",
    "description": "My personal MediaWiki installation",
    "license" : "GPL-2.0+",

    "repositories": [
        {
            "type": "composer",
            "url": "http://integration-composer.instance-proxy.wmflabs.org/"
        }
    ],

    "require": {
        "mediawiki/translation-notifications": "dev-master"
    },


    "minimum-stability": "dev"
}

The "require" statement will instruct composer that you want to install the TranslationNotifications extensions. It will take care of resolving the Translate dependency.

Validate your composer.json file:

$ composer validate
./composer.json is valid

resolve dependencies

In your MediaWiki directory, run the composer installer, instructing it to honor any unstable dependencies (aka development packages):

$ composer install --verbose
Loading composer repositories with package information
Installing dependencies
  - Installing composer/installers (dev-master v1.0.1)
    Cloning v1.0.1
Cloning into '/srv/trunk/vendor/composer/installers'...

  - Installing mediawiki/translate (dev-master 3fadb6b)
    Cloning 3fadb6bf19fe86226e4e6d35fddd5ebe597be035
Cloning into 'extensions/Translate'...
/srv/trunk/extensions/Translate

  - Installing mediawiki/translation-notifications (dev-master 440c597)
    Cloning 440c597a8b01ff2137850b1ef0d28b8ffa365fd9
Cloning into 'extensions/TranslationNotifications'...
/srv/trunk/extensions/TranslationNotifications

Writing lock file
Generating autoload files
$

Extensions have been installed:

$ ls -l ./extensions/
Translate
TranslationNotifications
$ 

To have extensions installed in the proper directory, we have crafted https://github.com/composer/installers/pull/37 which makes Composer support MediaWiki extensions (and have them installed in extensions directory).

Our own repository

Create a json representing your repository:

{
	"name": "Wikimedia Composer repository",
	"homepage": "http://integration-composer.instance-proxy.wmflabs.org/",
	"repositories": [
		{ "type": "git", "url": "https://gerrit.wikimedia.org/r/mediawiki/extensions/Translate" },
		{ "type": "git", "url": "https://gerrit.wikimedia.org/r/mediawiki/extensions/TranslationNotifications" }
	],
	"require-all": true
}

Install satis and create a repo:

create-project composer/satis --stability=dev
php bin/satis build <composer.json> <build-dir>

Scanning packages
Reading composer.json of mediawiki/translate (2012.11)
<warning>Skipped tag 2012.11, no composer file</warning>
Reading composer.json of mediawiki/translate (2012.12)
<warning>Skipped tag 2012.12, no composer file</warning>
Reading composer.json of mediawiki/translate ()
<warning>Skipped tag , invalid tag name</warning>
Reading composer.json of mediawiki/translate (REL1_19)
<warning>Skipped branch REL1_19, no composer file</warning>
Reading composer.json of mediawiki/translate (REL1_20)
<warning>Skipped branch REL1_20, no composer file</warning>
Reading composer.json of mediawiki/translate (composer)
<warning>Skipped branch composer, no composer file</warning>
Reading composer.json of mediawiki/translate (master)
Importing branch master (dev-master)
Reading composer.json of mediawiki/translate (translatesvg)
<warning>Skipped branch translatesvg, no composer file</warning>
Reading composer.json of mediawiki/translate (wmf/1.20wmf10)
<warning>Skipped branch wmf/1.20wmf10, no composer file</warning>
Reading composer.json of mediawiki/translate (wmf/1.20wmf8)
<warning>Skipped branch wmf/1.20wmf8, no composer file</warning>
Reading composer.json of mediawiki/translate (wmf/1.21wmf1)
<warning>Skipped branch wmf/1.21wmf1, no composer file</warning>
Reading composer.json of mediawiki/translate (wmf/1.21wmf7)
<warning>Skipped branch wmf/1.21wmf7, no composer file</warning>
Selected mediawiki/translate (dev-master)
Reading composer.json of mediawiki/translation-notifications (REL1_20)
<warning>Skipped branch REL1_20, no composer file</warning>
Reading composer.json of mediawiki/translation-notifications (composer)
<warning>Skipped branch composer, no composer file</warning>
Reading composer.json of mediawiki/translation-notifications (master)
Importing branch master (dev-master)
Selected mediawiki/translation-notifications (dev-master)
Writing packages.json
Writing web view

Result is under <build-dir>

$ ls <build-dir>
total 16
-rw-rw-r-- 1 root root 9836 Jan 29 14:50 index.html
-rw-rw-r-- 1 root root 2094 Jan 29 14:50 packages.json
$

The index.html is for human consumption. Composer itself will fetch the packagages.json file. Browsing the site gives out:

Screenshot of Wikimedia experimental Composer repository.