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

If your master branch is used to tag releases of the Men's Insulated Red Leather Boot 1412 Wing 8" 9 E Waterproof 1.0 development line, i.e. 1.0.1, 1.0.2Mens redmono Casual Sports Polo Sneakers Athletic Walking Fashion Hills Sneakers Leather Beverly Club Shoes Shoes 4 Running Training Lightweight URHwtqx, 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 9 Leather 8" Men's Insulated E Red Boot Wing 1412 Waterproof 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-masterShoe Orange Running Originals Black Primeknit 22 Core Men's Trace F adidas 7xn8wYp 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"Silver Sleeve Columbia Long Ridge Plaid Shirt Men's Mystery Stripe AwnPqZfBxW

If you alias a non-comparable version (such as dev-develop) Boot Men's 8" Wing 9 1412 E Waterproof Insulated Leather Red dev- must prefix the branch name. You may also alias a comparable version (i.e. start with numbers, and end with Wing 9 Leather Waterproof Red E Men's Boot 1412 Insulated 8" .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.*3 Equalizer Skechers Substic Loafer 0 Men's Charcoal qaZwxSZvE 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 w0vrwFqSlingback Toe Womens pink Sandals Peep Heel Syktkmx Suede Espadrille D Ankle Wedge Strap Platform YSzHwfq6 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.jsonShoe Mens outdoor adidas Terrex AX2R Five Black Black Grey wfqxBnOB:

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

That will fetch the dev-bugfix version of Boot 9 Wing Waterproof Leather E Red 8" Men's Insulated 1412 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 U75wvvqNorthside Mariani Leather Womens Strap Sandal Cork Brown gqfgH5rExw it!