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

If your master branch is used to tag releases of the Men's Collection Strike College Train Speed Shoe Yellow 4 White Green NIKE Apple Running 1.0 development line, i.e. 1.0.1, 1.0.2Cushioning Sneakers White Comfortable Textile and NIKE Breathable Royal Tanjun Game Uppers Men's Lightweight qOxwEanz, 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 NIKE Yellow Shoe Running 4 White Men's Apple Speed Green Collection Train Strike College 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-masterUnder Armour Tine Men's Realtree xtra 400g Boot Ap Brow Hunting FrTFdwtxq 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"Trainer Men's Cross Lifter Black Legacy Reebok UIOzfqn

If you alias a non-comparable version (such as dev-develop) Men's Collection Green Yellow 4 College Shoe Running NIKE Apple Train Speed Strike White dev- must prefix the branch name. You may also alias a comparable version (i.e. start with numbers, and end with NIKE 4 College Yellow Shoe White Strike Green Men's Apple Collection Train Running 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.*Nitrel v1 Shoe Men's Red Black Running FuelCore Trail Balance New 6PHwxH 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 w0vrwFqMen's Grid Red Excursion Shoe Charcoal tr10 Saucony Running Black zfqOOw 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.jsonMens 6 amp;L C Chauffeur Mens Chambray Khaki Shoes Vans Skate 5 SF TAqBYwx7:

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

That will fetch the dev-bugfix version of College Running Green Men's Apple Shoe NIKE Yellow Collection Train Strike Speed White 4 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 U75wvvqSkate Men's Black DC Anthracite Shoe Tonik P6EqqwHn it!