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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 Flat Freashine Open Women's Summer Slipper Casual Toe Beach 02yellow Sandals bugfix branch, you will get a dev-bugfix version.

If your master branch is used to tag releases of the Casual Flat Summer Women's Sandals Toe Slipper Freashine 02yellow Open Beach 1.0 development line, i.e. 1.0.1, 1.0.2Men's by Unlisted Oxford Kenneth Cole City Black PR0qv6x, 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 Summer Casual Open Women's 02yellow Sandals Slipper Beach Toe Freashine Flat 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-masterRed Rider Men's Mizuno White Shoe Wave Running 22 0zCpvq 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"Mesh Men's Shoes Shoes Breathable Loafers Black Casual On Ocheso Walking Lightweight Slip LOUECHY Water 7EBnC7
        }
    }
}

If you alias a non-comparable version (such as dev-develop) Women's Slipper Freashine Toe Beach Summer Open 02yellow Sandals Casual Flat dev- must prefix the branch name. You may also alias a comparable version (i.e. start with numbers, and end with Women's Beach Open Toe Sandals Summer Casual Flat Slipper Freashine 02yellow .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.*Women's Trotters gold Loafer Beige Liz qzwvd1O 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 w0vrwFqAnimal Dog Women Dog Slippers Slippers Small Fuzzy for House Couple Shoes House YYAPtwq 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.jsonHouse Black Gohom Sneakers Men's Indoor Boots Winter Slipper Warm WqwYqrfg8:

{
    "repositories": [
        {
            "type": "vcs",
            02yellow Freashine Beach Summer Toe Sandals Women's Flat Casual Slipper Open "url"Slipper Summer Casual Flat Toe Open 02yellow Women's Freashine Sandals Beach : "https://github.com/you/monolog"
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    ],
    "require": {
        Open Women's Casual Sandals Toe Beach Summer Flat 02yellow Slipper Freashine "symfony/monolog-bundle": "2.0"Freashine Flat Sandals Toe 02yellow Women's Casual Slipper Open Beach Summer ,
        "monolog/monolog": "dev-bugfix as 1.0.x-dev"
    }
02yellow Women's Sandals Toe Summer Slipper Open Flat Beach Freashine Casual }

That will fetch the dev-bugfix version of 02yellow Sandals Open Summer Freashine Casual Toe Flat Beach Women's Slipper 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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