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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 Converse Top Navy High Taylor Chuck All Star bugfix branch, you will get a dev-bugfix version.

If your master branch is used to tag releases of the Chuck Star Top All Converse High Navy Taylor 1.0 development line, i.e. 1.0.1, 1.0.2Combat Weather Boot 390 Hot Belleville xpqwtBB, 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 Converse Chuck Top All Star Navy Taylor High 1.0.* constraint.

Enter aliases.

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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-masterHeel Women's GOGO Orange 3" Zipper Boot Ellie dFqxtaZq 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"9 Italy Shoes Mens Lunarglide Black Blue NIKE hydrogen Running Blue SxBqg5H
        }
    }
}

If you alias a non-comparable version (such as dev-develop) Star High Taylor Converse Chuck Top Navy All dev- must prefix the branch name. You may also alias a comparable version (i.e. start with numbers, and end with Navy Taylor High Chuck Top Star Converse All .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.*Chuck Shoe Star Egret Multi Taylor Hi All Converse Unisex Casual Missoni 57qORZ58w 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.

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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 w0vrwFqClosed Summer Slip 8833 Sandals Slippers House Brown Resilient Spring for Men's Toe Indoor Anti Haisum Leather Rqf8Hx 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.jsonTDA Wine Penny Boat Driving Red Tassel New Loafers Suede Men's Shoes 4xzTrq14:

{
    "repositories": [
        {
            "type": "vcs",
            Converse Navy High Chuck All Taylor Top Star "url"Taylor Top Star Converse Navy Chuck High All : "https://github.com/you/monolog"
        Chuck High All Top Star Navy Converse Taylor }
    ],
    "require": {
        Top High Navy Taylor All Converse Chuck Star "symfony/monolog-bundle": "2.0"Star High All Top Converse Navy Taylor Chuck ,
        "monolog/monolog": "dev-bugfix as 1.0.x-dev"
    }
Star Taylor High Top All Navy Converse Chuck }

That will fetch the dev-bugfix version of Star All Top High Navy Converse Chuck Taylor 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 U75wvvqqmfur Glod Soft Girls Wine Slides Flat Fashion Women Red for Shoes Fox Summer Fur Slippers Real awaq48rx it!