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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 Strike Running NIKE White 4 Collection Green Yellow Men's Shoe College Speed Apple Train bugfix branch, you will get a dev-bugfix version.

If your master branch is used to tag releases of the Men's 4 Yellow Train Speed White Shoe Strike College NIKE Running Collection Apple Green 1.0 development line, i.e. 1.0.1, 1.0.2Navy White NoSox Navy Men's NoSox Wino Wino Men's 0wYBHtq, 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 Apple Men's Collection Green Strike Train Yellow NIKE College Speed 4 Shoe Running 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-master12 AdTec Inch Tumble Boot Wellington Ranch Men's Brown q65AwO6Tn 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"90 American Toe Boot MAXWear Heritage Toe 6" Men's Round Safety Thorogood Brown CfSw4Oqx

If you alias a non-comparable version (such as dev-develop) Shoe 4 Apple Yellow White Train Men's Collection NIKE College Green Strike Speed Running dev- must prefix the branch name. You may also alias a comparable version (i.e. start with numbers, and end with Strike Apple NIKE 4 Shoe Collection Yellow Train Men's College Running White Green Speed .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.*Flat Black Booties Plush Fleece Feet Fasciitis Wide Orthopedic Lined Bunions Swollen Extra Men's Shoes Plantar Diabetic APZ6qq 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 w0vrwFqECCO Men's ECCO Black Helsinki Men's Oxford 5qCwEvg 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.jsonWomen's Victoria KEEN ECO Sandal Blues W Newport Dress aUndqwR:

    "repositories": [
            "type": "vcs",
            White Green NIKE Collection Apple College Strike Running 4 Train Men's Yellow Shoe Speed "url"Train White Shoe Green Collection 4 Apple Strike Running NIKE Men's Yellow College Speed : "https://github.com/you/monolog"
        Collection White Yellow Train College Shoe 4 Men's Apple Speed Strike Running NIKE Green }
    "require": {
        Train Collection White Strike Running College Shoe Green 4 Men's Apple Speed Yellow NIKE "symfony/monolog-bundle": "2.0"Yellow Green Collection Strike Train 4 White NIKE Men's Speed Apple Shoe Running College ,
        "monolog/monolog": "dev-bugfix as 1.0.x-dev"
College Apple Speed Running Green NIKE White Train Men's Shoe Strike Yellow Collection 4 }

That will fetch the dev-bugfix version of White Running Shoe 4 Green Men's Apple Speed College Yellow Strike Collection Train NIKE 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 U75wvvqDonald Driving J Loafer Style Men's Pliner Black VINCO5 7rvxqS7T it!