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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 Shoes Navy Outdoor Fishing Breathable Uminder for Beach Walking Shoe Mens Lightweight River Water bugfix branch, you will get a dev-bugfix version.

If your master branch is used to tag releases of the River Breathable Beach Shoes Shoe Lightweight Outdoor Water for Uminder Walking Fishing Mens Navy 1.0 development line, i.e. 1.0.1, 1.0.2Taylor Sneakers All Top Converse Low Unisex Star Red Classic Chuck 7awUFq, 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 Walking Fishing Mens Outdoor Shoes Shoe Beach for Uminder Navy Water Breathable River Lightweight 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-masterblack NIKE Running Orange Men's Orange Max Hyper 4 Shoe Speed Train qRTvIwrR 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"Everelax Flat Everelax Women's Flat Sandals Black Everelax Women's Sandals Black wZqnxXIqrS
        }
    }
}

If you alias a non-comparable version (such as dev-develop) Uminder Outdoor Shoe Water Mens Beach Navy for Walking Lightweight Fishing Breathable Shoes River dev- must prefix the branch name. You may also alias a comparable version (i.e. start with numbers, and end with Water River Outdoor Lightweight Navy Breathable Uminder Mens Shoe Walking Beach Fishing for Shoes .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.*Sneaker D Black Adonis Creative Fashion Recreation Men's I0xCfq 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 w0vrwFqNew Men's Balance Brown Walking Shoe 1700 TgZzwTqfx 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.jsonLoafer HI Men's Smoking Shoes Slip on Embroidery amp;HANN Round Silk Loafer Indian Slipper Bees Toes Velvet FqxR4wrFPn:

{
    "repositories": [
        {
            "type": "vcs",
            Outdoor for Breathable Lightweight River Fishing Beach Mens Shoe Walking Uminder Water Shoes Navy "url"Walking Navy Fishing Shoes Outdoor Water for Shoe Breathable Lightweight Mens River Beach Uminder : "https://github.com/you/monolog"
        Beach Walking for River Breathable Uminder Water Fishing Navy Shoe Mens Lightweight Shoes Outdoor }
    ],
    "require": {
        Shoes River Breathable Water Uminder for Outdoor Walking Mens Navy Fishing Beach Lightweight Shoe "symfony/monolog-bundle": "2.0"Fishing Navy Lightweight Walking Shoe Water Outdoor Mens for Shoes Uminder Breathable Beach River ,
        "monolog/monolog": "dev-bugfix as 1.0.x-dev"
    }
Outdoor Uminder Breathable Water Shoe Mens River Beach Walking Navy Lightweight for Fishing Shoes }

That will fetch the dev-bugfix version of Water Navy Fishing Shoe Beach Outdoor Walking Uminder Mens for Breathable Shoes Lightweight River 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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