我正在尝试克隆一个 github 存储库并在其上发出 composer install.但我得到了这个:

I'm trying to clone a github repository and issue a composer install on it. But I am getting this:

警告:锁定文件不是最新的 composer.json 中的最新更改.您可能会得到过时的依赖项.运行 update 来更新它们.

Warning: The lock file is not up to date with the latest changes in composer.json. You may be getting outdated dependencies. Run update to update them.

Your requirements could not be resolved to an installable set of packages.  
  Problem 1  
    - Conclusion: remove symfony/polyfill-intl-icu v1.9.0  
    - Installation request for symfony/polyfill-intl-icu v1.9.0 -> satisfiable by symfony/polyfill-intl-icu[v1.9.0].  
    - Conclusion: remove symfony/process v3.4.15  
    - symfony/polyfill-intl-icu v1.9.0 requires symfony/intl ~2.3|~3.0|~4.0 -> satisfiable by symfony/symfony[v4.0.0].  
    - don't install symfony/process v3.4.15|remove symfony/symfony v4.0.0  
    - don't install symfony/symfony v4.0.0|don't install symfony/process v3.4.15  
    - Installation request for symfony/process v3.4.15 -> satisfiable by symfony/process[v3.4.15].  

当运行 composer update

Problem 1
- Conclusion: don't install symfony/symfony v4.1.7
- Conclusion: don't install symfony/symfony v4.1.6
- Conclusion: don't install symfony/symfony v4.1.5
- Conclusion: don't install symfony/symfony v4.1.4
- Conclusion: don't install symfony/symfony v4.1.3
- Conclusion: don't install symfony/symfony v4.1.2
- Conclusion: don't install symfony/symfony v4.1.1
- Conclusion: don't install symfony/symfony v4.1.0
- Conclusion: don't install symfony/symfony v4.0.14
- Conclusion: don't install symfony/symfony v4.0.13
- Conclusion: don't install symfony/symfony v4.0.12
- Conclusion: don't install symfony/symfony v4.0.11
- Conclusion: don't install symfony/symfony v4.0.10
- Conclusion: don't install symfony/symfony v4.0.9
- Conclusion: don't install symfony/symfony v4.0.8
- Conclusion: don't install symfony/symfony v4.0.7
- Conclusion: don't install symfony/symfony v4.0.6
- Conclusion: don't install symfony/symfony v4.0.5
- Conclusion: don't install symfony/symfony v4.0.4
- Conclusion: don't install symfony/symfony v4.0.3
- Conclusion: don't install symfony/symfony v4.0.2
- Conclusion: don't install symfony/symfony v4.0.1
- Conclusion: remove symfony/symfony v4.0.0
- don't install symfony/symfony v4.0.0|remove symfony/process v3.4.15
- don't install symfony/process v3.3.0|don't install symfony/symfony v4.0.0

composer.json(需要部分)

"require": {
    "php": ">=7.1",
    "symfony/symfony": "~4.0",
    "symfony/process": "^3.3",
    "doctrine/orm": "dev-fork as 2.5.6",
    "doctrine/doctrine-bundle": "1.*",
    "symfony/swiftmailer-bundle": "~3.1",
    "symfony/monolog-bundle": "~3.1",
    "sensio/framework-extra-bundle": "^5.1",
    "graylog2/gelf-php": "^1.4",
    "doctrine/doctrine-migrations-bundle": "^1.1",
    "awt/webauth-bundle": "3.0.*",
    "awt/canvas-client-bundle": "6.2.*"
}

推荐答案

运行:composer update --lock 让你的锁文件与你的 composer.json 同步.

Run: composer update --lock to get your lock file in sync with your composer.json.