UnexpectedValueException 无法解析版本约束 mybranch：版本字符串“mybranch”无效

Question

我正在尝试foo/bar在目录中使用 Composer开发一个 PHP 库（称为）/work/a，composer.json内容如下：

{
    "name": "foo/bar",
    "require": {
        "php": ">=7.2"
    }
}

/work/a 是一个 git 项目，我在分支上 mybranch

我正在尝试testing/foobar在 dir 中使用 Composer 在本地的另一个项目（称为）中使用此库，work/b其中包含以下composer.json内容：

{
    "name": "testing/foobar",
    "type": "project",
    "repositories": [
        {
            "type": "vcs",
            "url": "/work/a"
        }
    ],
    "require": {
        "php": "^7.4",
        "foo/bar": "mybranch"
    }
}

运行$ composer install时/work/b出现错误：

[UnexpectedValueException]                                            
  Could not parse version constraint mybranch: Invalid version string "mybranch"  

Answer 1

您必须在分支名称前加上dev-，因此您的分支名称必须是dev-mybranch.

从 VCS 存储库加载包

...
在composer.json，您应该在自定义分支名称前加上"dev-".
...

还要检查这个问答“作曲家需要分支名称”。

将分支名称更改为具有dev-前缀，将其添加到/work/b项目中：

{
    "name": "testing/foobar",
    "type": "project",
    "repositories": [
        {
          "type": "vcs",
          "url": "/work/a"
        }
    ],
    "require": {
        "php": "^7.4",
        "foo/bar": "dev-mybranch"
    }
}

运行composer install：

? composer install
Loading composer repositories with package information
Updating dependencies (including require-dev)
Package operations: 1 install, 0 updates, 0 removals
  - Installing foo/bar (dev-mybranch 85c97b7): Cloning 85c97b7b23 from cache
Writing lock file
Generating autoload files