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Packs.md

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Symfony Packs 集合包

  • Sometimes a single feature requires installing several packages and bundles. Instead of installing them individually, Symfony provides packs, which are Composer metapackages that include several dependencies.

  • For example, to add debugging features in your application, you can run the composer require --dev debug command. This installs the symfony/debug-pack, which in turn installs several packages like symfony/debug-bundle, symfony/monolog-bundle, symfony/var-dumper, etc.

  • You won't see the symfony/debug-pack dependency in your composer.json, as Flex automatically unpacks the pack. This means that it only adds the real packages as dependencies (e.g. you will see a new symfony/var-dumper in require-dev). While it is not recommended, you can use the `composer require --no-unpack ...`` option to disable unpacking.