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Why aliases?NIKE White Court Men's University Black Red Shoes Tennis Lite rq4rXw1

When you are using a VCS repository, you will only get comparable versions for branches that look like versions, such as 2.0 or 2.0.x. For your master branch, you will get a dev-master version. For your Propulsion Sneakers Techloom Heather APL Labs Pro Grey Men's Athletic Running bugfix branch, you will get a dev-bugfix version.

If your master branch is used to tag releases of the Athletic Labs Grey Men's APL Running Propulsion Heather Pro Sneakers Techloom 1.0 development line, i.e. 1.0.1, 1.0.2Haan Hamilton Oxford Dark Men's Brown Grand Cole Wing RqdcwEanRC, 1.0.3, etc., any package depending on it will probably require version 1.0.*.

If anyone wants to require the latest dev-master, they have a problem: Other packages may require 1.0.*, so requiring that dev version will lead to conflicts, since dev-master does not match the Running Men's Techloom Sneakers Grey APL Labs Heather Pro Propulsion Athletic 1.0.* constraint.

Enter aliases.

Branch aliasProfessional Women's Mule Patent Script Dansko q0x54g57

The dev-master branch is one in your main VCS repo. It is rather common that someone will want the latest master dev version. Thus, Composer allows you to alias your dev-masterAthletic 3 Men's Shoes Walking Sneaker Running Lightweight Blue Casual Sport Shoes Lauwodun Breathable FnBTz7qxq branch to a 1.0.x-dev version. It is done by specifying a branch-alias field under extra in composer.json:

{
    "extra": {
        "branch-alias": {
            "dev-master": "1.0.x-dev"Sanuk Black Flip Floral Ella Women's Yoga Flop Sling Waikiki rIOrxY
        }
    }
}

If you alias a non-comparable version (such as dev-develop) Sneakers Athletic Grey Heather Men's Propulsion Techloom Pro Labs APL Running dev- must prefix the branch name. You may also alias a comparable version (i.e. start with numbers, and end with Men's Grey Heather Sneakers Propulsion Techloom APL Pro Running Labs Athletic .x-dev), but only as a more specific version. For example, 1.x-dev could be aliased as 1.2.x-dev.

The alias must be a comparable dev version, and the branch-alias must be present on the branch that it references. For dev-master, you need to commit it on the master branch.

As a result, anyone can now require 1.0.*Up 9 Free Womens Slippers Warm Warmies Seconds 90 Size Snowy One Various Of 5 In Ladies US Microwavable Boot Colours Axdqd8aP and it will happily install dev-master.

In order to use branch aliasing, you must own the repository of the package being aliased. If you want to alias a third party package without maintaining a fork of it, use inline aliases as described below.

Require inline aliasBikers Slip On Skechers Womens Loafers Navy Smokin Fit Relaxed 1wWEqZE6F

Branch aliases are great for aliasing main development lines. But in order to use them you need to have control over the source repository, and you need to commit changes to version control.

This is not really fun when you want to try a bugfix of some library that is a dependency of your local project.

For this reason, you can alias packages in your require and require-dev fields. Let's say you found a bug in the monolog/monolog package. You cloned HOKA Blue SS17 ONE Shoes Hoka 5 ONE Charcoal Bondi Grey Running w0vrwFqBoot Men's Rakim Straw Martens Indigo Dr Yellow Black Chukka ROwnInqz on GitHub and fixed the issue in a branch named bugfix. Now you want to install that version of monolog in your local project.

You are using symfony/monolog-bundle which requires monolog/monolog version 1.*. So you need your dev-bugfix to match that constraint.

Add this to your project's root composer.jsonLoafer Navy Wayne Slip Men's On Road Robert by RW qvw400:

{
    "repositories": [
        {
            "type": "vcs",
            Propulsion Men's Pro Athletic Running APL Heather Labs Grey Sneakers Techloom "url"Techloom APL Sneakers Athletic Propulsion Men's Running Pro Labs Grey Heather : "https://github.com/you/monolog"
        Running Athletic Men's Pro Sneakers Labs Techloom Grey Propulsion APL Heather }
    ],
    "require": {
        APL Labs Pro Heather Athletic Men's Grey Techloom Running Sneakers Propulsion "symfony/monolog-bundle": "2.0"Propulsion Men's Techloom APL Pro Heather Sneakers Labs Running Grey Athletic ,
        "monolog/monolog": "dev-bugfix as 1.0.x-dev"
    }
Men's Pro Labs Running Propulsion Sneakers Athletic Techloom Heather APL Grey }

That will fetch the dev-bugfix version of Heather Propulsion Pro Grey Men's Labs Running APL Sneakers Athletic Techloom monolog/monolog from your GitHub and alias it to 1.0.x-dev.

Note: Inline aliasing is a root-only feature. If a package with inline aliases is required, the alias (right of the as) is used as the version constraint. The part left of the as is discarded. As a consequence, if A requires B and B requires monolog/monolog version dev-bugfix as 1.0.x-dev, installing A will make B require 1.0.x-dev, which may exist as a branch alias or an actual 1.0 branch. If it does not, it must be inline-aliased again in A's composer.json.

Note: Inline aliasing should be avoided, especially for published packages/libraries. If you found a bug, try and get your fix merged upstream. This helps to avoid issues for users of your package.

Found a typo? Something is wrong in this documentation? Slippers by Slipper Red Molly Women's International Tamarac Blitz Faux Low U75wvvqSafety Accredited Ottawa Cap Toe and Northwest Pink Black Steel Shoe Territory Ht4Eqqw it!