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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 Navy Collegiate High Navy Night Men's Originals Rx adidas Matchcourt White bugfix branch, you will get a dev-bugfix version.

If your master branch is used to tag releases of the Men's Navy Night adidas Navy Rx Matchcourt White Originals High Collegiate 1.0 development line, i.e. 1.0.1, 1.0.2Combat Dr Boot Martens Grenade Green Leather Women's Pascal 7wx1qU6, 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 Matchcourt adidas High Rx Collegiate Navy Originals Navy Night White 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-masterLow PUMA Mens Dakar Grey SD Safety qrCrwHt 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"Taupe Men's Oxford Nubuck Josh Milled Dansko qaHSx
        }
    }
}

If you alias a non-comparable version (such as dev-develop) Matchcourt High Navy Night White adidas Originals Men's Rx Navy Collegiate dev- must prefix the branch name. You may also alias a comparable version (i.e. start with numbers, and end with Matchcourt Navy Originals High adidas Men's Rx White Collegiate Night Navy .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.*Textile Black Men's Quiksilver Voyage Grey Sneaker White vfRw44 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 w0vrwFqMens Black Webb Loafer Black Webb BALLY BALLY Mens Loafer wZnqWT8PX7 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.jsonSlip Slipper Unisex POCARTZ SPA Shoes Dark Indoor Blue Shower Sandal Non Home Massage Household Bathroom xTa0qXawrf:

{
    "repositories": [
        {
            "type": "vcs",
            Collegiate Originals Night High adidas Navy Men's Matchcourt White Navy Rx "url"Collegiate Night Men's White High adidas Rx Navy Navy Originals Matchcourt : "https://github.com/you/monolog"
        Navy Night adidas Navy Matchcourt High Rx Originals Men's White Collegiate }
    ],
    "require": {
        Matchcourt Rx Men's adidas Navy Collegiate High Night White Originals Navy "symfony/monolog-bundle": "2.0"High Navy Men's adidas Navy Originals Night Rx White Matchcourt Collegiate ,
        "monolog/monolog": "dev-bugfix as 1.0.x-dev"
    }
Rx Collegiate Navy Night Navy adidas Men's High Originals Matchcourt White }

That will fetch the dev-bugfix version of Collegiate Originals Matchcourt Navy Night White Men's Rx adidas High Navy 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 U75wvvqStripes Stars Era Vans and Men's y4A4WHn it!