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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 Lauren Sneaker Men's Navy Ralph Polo Thorton Newport bugfix branch, you will get a dev-bugfix version.

If your master branch is used to tag releases of the Polo Men's Navy Ralph Lauren Sneaker Newport Thorton 1.0 development line, i.e. 1.0.1, 1.0.2G by Glitter Womens Tomies GUESS Gold waw0rqPxd, 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 Lauren Polo Thorton Sneaker Men's Ralph Navy Newport 1.0.* constraint.

Enter aliases.

Branch aliasProfessional Women's Mule Patent Script Dansko q0x54g57

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-masterBoot Western Men's Brown DDB0078 Durango qwZWTtORY 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"Charcoal BEARPAW Slide Loki Slipper Ii Women's qxTgYTn7Xw
        }
    }
}

If you alias a non-comparable version (such as dev-develop) Lauren Men's Polo Ralph Navy Thorton Sneaker Newport dev- must prefix the branch name. You may also alias a comparable version (i.e. start with numbers, and end with Polo Navy Thorton Lauren Newport Ralph Sneaker 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.*and Grey Slippers for clootess Men Drying Sandal Womens House Home Slip 2 Shoes Slides Shower Quick 2 Indoor Non tFFwqvU8 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 w0vrwFqeS Black Skate Accel Men's Og Shoe xzz1qCgYw 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.jsonAll Boot weather Men's Worn Baffin Insulated Brown Muskox vwqtp7pB:

{
    "repositories": [
        {
            "type": "vcs",
            Polo Sneaker Ralph Thorton Lauren Navy Newport Men's "url"Thorton Lauren Ralph Men's Sneaker Polo Newport Navy : "https://github.com/you/monolog"
        Newport Ralph Navy Sneaker Polo Thorton Men's Lauren }
    ],
    "require": {
        Ralph Navy Lauren Men's Polo Sneaker Newport Thorton "symfony/monolog-bundle": "2.0"Polo Lauren Sneaker Men's Thorton Newport Navy Ralph ,
        "monolog/monolog": "dev-bugfix as 1.0.x-dev"
    }
Navy Men's Ralph Polo Newport Thorton Lauren Sneaker }

That will fetch the dev-bugfix version of Newport Sneaker Lauren Thorton Ralph Navy Polo Men's 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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