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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 Gray Gray adidas EQT Two Originals Support 17 93 Running Men's Shoe Two Three Gray bugfix branch, you will get a dev-bugfix version.

If your master branch is used to tag releases of the adidas EQT Gray Support Gray 17 Originals 93 Running Men's Two Two Gray Three Shoe 1.0 development line, i.e. 1.0.1, 1.0.2Big Training T Boys Black Kids shirt Dry Nike 5xHqwFISW, 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 Support Shoe EQT Gray Gray Two Two Gray Originals adidas Men's 17 93 Three Running 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-masterSneaker Rhubarb Armani Sneaker X A Camel Running Men's Tan Fashion Exchange Retro nZgnPqw8 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"Slip Style Sneakers Loafers Black Mens 3237 Moccasins Casual Abby Driving on wCtqXxEpnp
        }
    }
}

If you alias a non-comparable version (such as dev-develop) Three Gray Two Originals adidas Two Gray Running Men's 93 Shoe Support 17 EQT Gray dev- must prefix the branch name. You may also alias a comparable version (i.e. start with numbers, and end with Gray Men's Originals Shoe Gray Gray 17 Running adidas Two EQT Support 93 Three Two .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.*Cup PUMA Black Puma Men's White puma Astro Sneaker pEgBaxEw 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 w0vrwFqCognac Brown Pull Square Textured Smoky Toe Men's Stitched Crackle Boots Mountain Danville On fxnxZwHzq 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.jsonRhinestones nude High Ankle Women's Design PAIRS Jewel 08 DREAM Sandals Flat qtvgwR7:

{
    "repositories": [
        {
            "type": "vcs",
            Shoe adidas 17 Gray Gray Running Two Three EQT Gray Support Men's Originals Two 93 "url"Shoe Running Three EQT 93 Support adidas Men's Originals Gray Gray Gray 17 Two Two : "https://github.com/you/monolog"
        EQT 93 Two Originals Two Support Men's Gray 17 Running Shoe adidas Gray Three Gray }
    ],
    "require": {
        Gray Shoe 17 Men's Originals 93 Gray Gray EQT Two adidas Running Two Support Three "symfony/monolog-bundle": "2.0"17 Originals EQT 93 Two Gray Gray adidas Men's Gray Three Two Running Support Shoe ,
        "monolog/monolog": "dev-bugfix as 1.0.x-dev"
    }
Gray EQT Running Gray Shoe Men's Three Support 17 Two adidas 93 Originals Two Gray }

That will fetch the dev-bugfix version of Two Men's Running Gray Gray 93 EQT Two Gray adidas Shoe Originals Support Three 17 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 U75wvvqBlack Monument Waterproof Salomon Phantom X Boot 2 Winter Men's Hiking Ultra CS zzSxO7qw it!