Thread:Help talk:Installation/Obsolete composer.json in MW 1.22 RC0 and earlier

Probably not worth to be mentioned on the installation page but MW 1.22 RC0 and earlier versions were shipped (respecticely 1.21.x is still shipped) with a composer.json file in the wiki directory. In case this file still exists when trying to install SMW and other extensions with composer it can cause issues that make using composer impossible.