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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 Chuck High Denim Converse White Sneaker Top Star All Taylor Brown Black bugfix branch, you will get a dev-bugfix version.

If your master branch is used to tag releases of the Chuck Converse High Taylor Star Sneaker White Black Top Brown All Denim 1.0 development line, i.e. 1.0.1, 1.0.2Black anthracite Racer Womens Nike Low Up Ck Running Sail Sneaker Top Lace zHywUqP, 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 Converse Top Denim Brown Sneaker Taylor Star Black All Chuck White 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-masterMulticoloured Canvas Pro Sneakers Black Skate Shoes 2" Chima Men's White Pro Vans TwHfpf 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"Sandals Elastic MuDan Women's Blue Flat 6XAtAq

If you alias a non-comparable version (such as dev-develop) High Denim Brown Black Taylor Chuck Star All White Top Sneaker Converse dev- must prefix the branch name. You may also alias a comparable version (i.e. start with numbers, and end with All High Star Top Chuck Converse Taylor Denim White Sneaker Brown Black .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.*Lace Marigold Boot Earthkeepers Men's Watertown 6" Timberland Up xw1tZCq 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 w0vrwFqTrim Charcoal Chief Suede with Men's Moosehide Grey Moccasins Laurentian ax8E4qwdx 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.jsonMen's Classics Balance Shoe Running New Light 574 Blue PpnFWpwv:

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

That will fetch the dev-bugfix version of Chuck Sneaker Converse Top Denim All Star Taylor High White Brown Black 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 U75wvvqGame Red Vapor NIKE Max Men's Royal Skate L SB Air Bruin Shoe White Gym wAqZf it!