Getting Started

First make sure you have composer installed on your machine. On the Composer website you will find a Getting Started guide.

The simplest way to get started is by defining your extension in your Composer manifest directly. Setup a fresh Joomla installation and create a composer.json file in its root directory.

Let’s say you want to install the extension com_xyz and you’ve downloaded the installation package to /Users/YourName/Downloads/com_xyz.tar.gz.

Your composer.json contents should then look as follows:

    "repositories": [
            "type": "package",
            "package": {
                "name": "vendor/xyz",
                "type": "joomlatools-composer",
                "version": "1.0.0",
                "dist": {
                    "url": "file:////Users/YourName/Downloads/com_xyz.tar.gz",
                    "type": "tar"
                "require": {
                    "joomlatools/composer": "*"

    "require": {
        "vendor/xyz": "1.0.0"

Using this JSON file, we have now defined our own custom package. Pay attention to the following settings:

  • The type has to be set to joomlatools-composer
  • Make sure the url directive points to the location of the install package.

Save this file and run from your console and within the joomla root directory:

composer install

Executing composer install will now fetch the joomlatools/composer plugin and use it to install the package into your Joomla installation.

You should get output similar to the following:

Console output

Congratulations, your Joomla setup has already been completed! Leaving you plenty of time to start cracking on your new templates and/or extensions!

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