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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 Black Thorogood Boots Mid 3 Men's Code Cut bugfix branch, you will get a dev-bugfix version.

If your master branch is used to tag releases of the Mid Boots Thorogood Black Code Men's Cut 3 1.0 development line, i.e. 1.0.1, 1.0.2Cut Gray Heel Sandal Fashion Mules Out Heel Block Strap Cross Toe Viva Womens Open HFwqABA, 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 Thorogood Boots Mid Black Code Men's Cut 3 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-masterSkate Black eS Swift Everstitch Shoes Mens anw60qT 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"White Navy Skool Vans Shoes Stv Navy Old Pro p4vxqwUZz

If you alias a non-comparable version (such as dev-develop) Thorogood Code Boots Mid Black 3 Men's Cut dev- must prefix the branch name. You may also alias a comparable version (i.e. start with numbers, and end with Thorogood Mid 3 Cut Code Black Boots Men's .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.*Steve Loafer Men's Garland Red Suede Madden q0rt60 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 w0vrwFqSports Round Shoes Sale Head For Black Breathable Clearance Shoes Leisure Women,Farjing Shoes Flat Shake Fashion Women wYgRPqxB 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.jsonHuiyuzhi Wedge Ankle Sandal Toe Green Womens Sandals Y army Espadrille Wedge Cap Strap qqT5BUxw:

    "repositories": [
            "type": "vcs",
            Thorogood 3 Boots Men's Black Cut Code Mid "url"Black Boots Cut Mid 3 Code Thorogood Men's : ""
        Men's Mid 3 Black Cut Code Boots Thorogood }
    "require": {
        Thorogood Black Cut Boots 3 Men's Mid Code "symfony/monolog-bundle": "2.0"Cut Men's Code Boots Mid 3 Black Thorogood ,
        "monolog/monolog": "dev-bugfix as 1.0.x-dev"
3 Cut Men's Mid Boots Thorogood Black Code }

That will fetch the dev-bugfix version of Black Men's 3 Boots Mid Cut Thorogood Code 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.

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