TYPO3 CMS Installers

1.3.1 2016-07-05 09:38 UTC


This package acts as composer plugin in order to download and install TYPO3 core and extensions and put them into a directory structure which is suitable for TYPO3 to work correctly.

The behavior of the installer can be influenced by configuration in the extra section of the root composer.json

  "extra": {
      "typo3/cms": {
          "web-dir": "web",
          "prepare-web-dir": true,
          "cms-package-dir": "{$vendor-dir}/typo3/cms"

You can specify a relative path from the base directory, where the public document root should be located. Links to the typo3 folder and the index.php will be established in this folder by the installer.

The default value is "", which means next to your root composer.json. This default value is kept for compatiblity reasons, but is recommended to have the document root in a separate folder so that the vendor folder and the composer.lock file are not accessible.


Whether or not links to the typo3 folder and the index.php will be established in the web directory. At a later point, this option might affect other actions like publishing assets.

The default value is true.


You can specify a relative path from the base directory, where the typo3/cms package should be installed into.

The default value is "typo3_src". This default value is kept for compatibility reasons, but is recommended to let typo3/cms being installed in the vendor directory, which is possible with the example configuration outlined above.


If this value is true, extensions will be installed into the vendor directory, like any other composer package.

If the value is false, extensions will be installed in typo3conf/ext folder of the TYPO3 installation and the name of the extension directory is implied by the first replace entry. If a replaces section is not present in the extensions composer.json, the second part of the vendor name is used, but all dashes (-) are converted to underscores (_).


    "name": "vendor/my-fancy-extension",

In this case an extension directory with the name my_fancy_extension is implied. However, it is highly recommended to add a replace section in the composer.json.


    "name": "vendor/my-fancy-extension",
    "replace": {
        "my_extension": "self.version"

In this case, the install directory my_extension would be used, because the replace section takes precedence.

TYPO3 assumes extensions to be present in a directory below typo3conf/ext. If this value is set to true, the extensions need to be copied or linked to this directory manually! When doing so, the extension name must be properly derived from the composer package name or the replaces section in the extension.

The default value is false.

Feedback/ Bugreports/ Contribution

Bug reports, feature requests and pull requests are welcome in the Github repository: https://github.com/TYPO3/CmsComposerInstallers/