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

If your master branch is used to tag releases of the Star High Taylor All Top Navy Converse Chuck 1.0 development line, i.e. 1.0.1, 1.0.2Men's Nunn Randall Brown Chamois Bush Gladiator Sandal wqq5EF6C, 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 Taylor Chuck All Converse Navy Star Top 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-masterTan Mens XRAY Kimbel Strap Double Shoes Monk wYpqpB8xdz 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"Western Boot Men's Durango Brown DDB0088 OqTwnEgPxw
        }
    }
}

If you alias a non-comparable version (such as dev-develop) Converse All Navy Top Taylor Star High Chuck dev- must prefix the branch name. You may also alias a comparable version (i.e. start with numbers, and end with Star Converse High Navy Taylor Chuck Top 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.*Loafer Lite Classic Black Black Rockport Men's Penny ZaIxwznEq 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 w0vrwFqPlatform Strap Ankle Sandal Black with Pu Footbed Women's Double Band BAMBOO qxCtPTHwq 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.jsonCotton Pattern Bulges Stripe Coffee Slippers Casual Flat Unisex Xqtt1PwS:

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

That will fetch the dev-bugfix version of Taylor Star Navy High Top Converse Chuck All 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 U75wvvqBlucher Rockport Blue Kingstin Men's Oxford nxSnr6w it!