Skins, such as the default skin Vector, are distributed separately. Drop them
into this directory and enable as per the skin's installation instructions.
You can find a list of available skins at
<https://www.mediawiki.org/wiki/Category:All_skins>,
and more information about installing and configuring skins at
<https://www.mediawiki.org/wiki/Manual:Skin_configuration>.
If you are a developer, you might want to fetch the skin tree in another
directory and make a symbolic link:
mediawiki/skins$ ln -s ../../skins-trunk/FooBar
Most skins are available through Git:
https://gerrit.wikimedia.org/r/#/admin/projects/?filter=mediawiki%252Fskins%252F
https://git.wikimedia.org/project/mediawiki
Please note that under POSIX systems (Linux...), parent of a symbolic path
refers to the link source, NOT to the target! You should check the env
variable MW_INSTALL_PATH in case the extension is not in the default location.
The following code snippet lets you override the default path:
$IP = getenv( 'MW_INSTALL_PATH' );
if( $IP === false ) {
$IP = __DIR__ . '/../..';
}
require_once "$IP/maintenance/Maintenance.php"; // a MediaWiki core file
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