GitSplit Component

The GitSplit component provides commands to split a monorepo using the splitsh-lite script and other tools.

Usage

The first implementation of GitSplit is DevShop itself. Look to OpenDevShop's code for a usage example:

Add the package to your project's composer.json:
```
composer require devshop/git-split --dev  
```
See https://github.com/opendevshop/devshop/blob/1.x/composer.json#L72
Import a legacy repo into a subfolder:

If a component repo already exists, you can merge it in with the git subtree command:
```
git subtree add --prefix=$PATH_IN_REPO $GIT_URL $BRANCH
```
For example, when we merged in the "devmaster" install profile from Drupal.org:
```
git subtree add --prefix=devmaster https://git.drupalcode.org/project/devmaster.git 7.x-1.x
```
See https://github.com/opendevshop/devshop/tree/1.x/devmaster

Add extra.git-splits

Add the Secondary Repository information to the config.git-split.repos section of the main devshop/composer.json file.

"extra": {
    "git-split": {
        "repos": {
            "devmaster": "git@github.com:opendevshop/devmaster.git"
        }
    }
}

Run the command composer git:split every time there is new code.

See the DevShop GitHub Action "git.yml" file for an example on running composer git:split to push code to multiple remotes, including different github organizations and drupal.org using SSH keys:

https://github.com/opendevshop/devshop/blob/1.x/.github/workflows/git.yml#L64

splitsh-lite is a third party shell script installed when this component is used.