我有一个运行 4 的 Silverstripe 的全新安装。
我正在尝试安装此模块：https://github.com/dnadesign/silverstripe-elemental/tree/2.1
命令：
作曲家需要 DNAdesign/Silverstripe-elemental 2.x-dev
我在作曲家中收到此错误：
Loading composer repositories with package information
Updating dependencies
Your requirements could not be resolved to an installable set of packages.
Problem 1
- Conclusion: don't install dnadesign/silverstripe-elemental 2.1.2
- Conclusion: don't install dnadesign/silverstripe-elemental 2.1.1
- Conclusion: don't install dnadesign/silverstripe-elemental 2.1.0
- Conclusion: don't install dnadesign/silverstripe-elemental 2.0.1
- Conclusion: don't install dnadesign/silverstripe-elemental 2.0.0
- Conclusion: don't install dnadesign/silverstripe-elemental 2.0.0-beta1
- Installation request for dnadesign/silverstripe-elemental-list dev-master -> satisfiable by dnadesign/silverstripe-elemental-list[dev-master].
- don't install dnadesign/silverstripe-elemental 2.2.x-dev|install dnadesign/silverstripe-elemental 2.x-dev
- Conclusion: don't install dnadesign/silverstripe-elemental 2.x-dev
- Conclusion: don't install dnadesign/silverstripe-elemental 2.1.x-dev
- dnadesign/silverstripe-elemental-list dev-master requires dnadesign/silverstripe-elemental >=3.0 -> satisfiable by dnadesign/silverstripe-elemental[3.0.x-dev, 3.1.x-dev, 3.x-dev, 3.2.x-dev, 4.0.x-dev, dev-master, 4.x-dev].
- Can only install one of: dnadesign/silverstripe-elemental[3.0.x-dev, 2.0.x-dev].
- Can only install one of: dnadesign/silverstripe-elemental[3.1.x-dev, 2.0.x-dev].
- Can only install one of: dnadesign/silverstripe-elemental[3.x-dev, 2.0.x-dev].
- Can only install one of: dnadesign/silverstripe-elemental[3.2.x-dev, 2.0.x-dev].
- Can only install one of: dnadesign/silverstripe-elemental[4.0.x-dev, 2.0.x-dev].
- Can only install one of: dnadesign/silverstripe-elemental[dev-master, 2.0.x-dev].
- Can only install one of: dnadesign/silverstripe-elemental[4.x-dev, 2.0.x-dev].
- Installation request for dnadesign/silverstripe-elemental 2.* -> satisfiable by dnadesign/silverstripe-elemental[2.0.0, 2.0.0-beta1, 2.0.1, 2.0.x-dev, 2.1.0, 2.1.1, 2.1.2, 2.1.x-dev, 2.x-dev, 2.2.x-dev].
为什么不尝试安装 composer require dnadesign/silverstripe-elemental dev-master 而不是2.x-dev，因为您已经完全安装了 ss4。
https://addons.silverstripe.org/add-ons/dnadesign/silverstripe-elemental