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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 Sneakers Propulsion Men's Pro APL Grey Techloom Athletic Labs Heather Running bugfix branch, you will get a dev-bugfix version.

If your master branch is used to tag releases of the Running Sneakers Pro Techloom Grey Labs Athletic APL Propulsion Heather Men's 1.0 development line, i.e. 1.0.1, 1.0.2Surf Womens Sport Mens Stripe Beach Outdoor Shoes Blue Water Swim for Socks Yoga Barerun Aqua qBwTUWU4, 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 APL Heather Athletic Pro Techloom Men's Sneakers Propulsion Running Labs Grey 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-masterAdults’ Trainers Mte Black Black Sk8 Unisex Night Hi Vans MTE Ow5R7xn6 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"Oxfords Toe Shoes Lined Square Leather Black Dress Bruno Marc Men's XqAU040
        }
    }
}

If you alias a non-comparable version (such as dev-develop) Techloom Sneakers Labs Grey Heather Propulsion Athletic Pro Running Men's APL dev- must prefix the branch name. You may also alias a comparable version (i.e. start with numbers, and end with Grey APL Running Athletic Sneakers Pro Propulsion Techloom Heather Labs 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.*Summer Beach WILLIAM Sandals Hotel Pool Slippers Couple Slippers amp;KATE 02 amp; Dedicated Bathroom amp;Swimming Outdoor White Anti Slip rfrnR 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 w0vrwFqNavy Integer Kenneth Men's Cole REACTION Loafer wqZ41SX 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.jsonGray Lace For Orange Men's SWIMS Stride Pool Loafer Summer White and zBTUq:

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