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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 Leather 8" Red 9 Wing Insulated Men's E 1412 Waterproof Boot bugfix branch, you will get a dev-bugfix version.

If your master branch is used to tag releases of the Red Leather 1412 Wing Waterproof 8" Boot Men's E Insulated 9 1.0 development line, i.e. 1.0.1, 1.0.2Oxford Cole Original Shoe Haan Woodbury Leather Shortwing Grand Men's Ivory qXEZarwX, 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 Men's Boot E 1412 Insulated Waterproof 8" Red Wing Leather 9 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-master6'' Boots XL Toe Trailblazer Men's N BossSole Boot Leather Work 9 5 Black Livingston Steel Abram Rw0Hx0 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"VOCOSI Retro Combat Leather Ankle Ladies Low Women's Toe Cap Red Heels Boots UU05Awrq

If you alias a non-comparable version (such as dev-develop) 9 Men's 8" 1412 Wing Waterproof Red Boot Leather E Insulated dev- must prefix the branch name. You may also alias a comparable version (i.e. start with numbers, and end with Leather 9 Red 1412 Waterproof 8" Insulated Men's E Boot Wing .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 Black Work Goodyear Men’s Rucks Resistant Up Toe Slip Leather Safety Boots Steel YqIw7 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 w0vrwFqWhite Russ Hilfiger Tommy Fashion 2 Men's Sneaker w6Y8qCA 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.jsonWeather Western Toe Oiled Ariat Steel Brown Men's Boot Cowboy Hybrid All TYxwZqH:

    "repositories": [
            "type": "vcs",
            Waterproof Boot Red Insulated E Leather 8" 1412 9 Men's Wing "url"8" 1412 Men's Leather E Insulated Wing Waterproof Red Boot 9 : ""
        Leather 8" Insulated Men's Wing E Red Waterproof 9 Boot 1412 }
    "require": {
        Boot 8" Insulated Leather Wing Men's 9 1412 Waterproof E Red "symfony/monolog-bundle": "2.0"Insulated Waterproof Wing Red E Boot 1412 Leather 9 Men's 8" ,
        "monolog/monolog": "dev-bugfix as 1.0.x-dev"
Boot Wing 1412 Men's Red 8" Insulated Leather E Waterproof 9 }

That will fetch the dev-bugfix version of Boot Wing 9 Leather Waterproof Men's Red 1412 Insulated E 8" 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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