yarn add 安装多个版本，【如何】保证只安装一个？答案

【问题标题】：yarn add installs multiple versions, [how to] ensure that there is only one installed?yarn add 安装多个版本，【如何】保证只安装一个？
【发布时间】：2022-09-23 04:36:24
【问题描述】：

我正在尝试运行this tutorial，并且收到大量有关冲突包的警告（请参见下文）。当我运行yarn dedupe 时，我收到一条令人沮丧的消息error The dedupe command isn\'t necessary. yarn install will already dedupe. 首先yard install 已被yarn add 替换，其次，如果纱线自动重复数据删除，我怎么会有这么多重复的包？有人可以告诉这个新手如何修复这些重复的包吗？我是否必须手动逐个文件夹并删除它们？

@polkadot/util has multiple versions, ensure that there is only one installed.
Either remove and explicitly install matching versions or dedupe using your package manager.
The following conflicting packages were found:
        cjs 8.7.1       D:\\acala_hardhat\\hello-world\\node_modules\\@acala-network\\eth-providers\\node_modules\\@polkadot\\api-augment\\node_modules\\@polkadot\\util
        cjs 8.7.1       D:\\acala_hardhat\\hello-world\\node_modules\\@acala-network\\eth-providers\\node_modules\\@polkadot\\rpc-augment\\node_modules\\@polkadot\\util
@polkadot/util has multiple versions, ensure that there is only one installed.
Either remove and explicitly install matching versions or dedupe using your package manager.
The following conflicting packages were found:
        cjs 8.7.1       D:\\acala_hardhat\\hello-world\\node_modules\\@acala-network\\eth-providers\\node_modules\\@polkadot\\api-augment\\node_modules\\@polkadot\\util
        cjs 8.7.1       D:\\acala_hardhat\\hello-world\\node_modules\\@acala-network\\eth-providers\\node_modules\\@polkadot\\rpc-augment\\node_modules\\@polkadot\\util
        cjs 8.7.1       D:\\acala_hardhat\\hello-world\\node_modules\\@acala-network\\eth-providers\\node_modules\\@polkadot\\types-augment\\node_modules\\@polkadot\\util
@polkadot/util has multiple versions, ensure that there is only one installed.
Either remove and explicitly install matching versions or dedupe using your package manager.
The following conflicting packages were found:
        cjs 8.7.1       D:\\acala_hardhat\\hello-world\\node_modules\\@acala-network\\eth-providers\\node_modules\\@polkadot\\api-augment\\node_modules\\@polkadot\\util
        cjs 8.7.1       D:\\acala_hardhat\\hello-world\\node_modules\\@acala-network\\eth-providers\\node_modules\\@polkadot\\rpc-augment\\node_modules\\@polkadot\\util
        cjs 8.7.1       D:\\acala_hardhat\\hello-world\\node_modules\\@acala-network\\eth-providers\\node_modules\\@polkadot\\types-augment\\node_modules\\@polkadot\\util
        cjs 8.4.1       D:\\acala_hardhat\\hello-world\\node_modules\\@acala-network\\eth-transactions\\node_modules\\@polkadot\\util
@polkadot/util has multiple versions, ensure that there is only one installed.
Either remove and explicitly install matching versions or dedupe using your package manager.
The following conflicting packages were found:
        cjs 8.7.1       D:\\acala_hardhat\\hello-world\\node_modules\\@acala-network\\eth-providers\\node_modules\\@polkadot\\api-augment\\node_modules\\@polkadot\\util
        cjs 8.7.1       D:\\acala_hardhat\\hello-world\\node_modules\\@acala-network\\eth-providers\\node_modules\\@polkadot\\rpc-augment\\node_modules\\@polkadot\\util
        cjs 8.7.1       D:\\acala_hardhat\\hello-world\\node_modules\\@acala-network\\eth-providers\\node_modules\\@polkadot\\types-augment\\node_modules\\@polkadot\\util
        cjs 8.4.1       D:\\acala_hardhat\\hello-world\\node_modules\\@acala-network\\eth-transactions\\node_modules\\@polkadot\\util
        cjs 8.7.1       D:\\acala_hardhat\\hello-world\\node_modules\\@polkadot\\util
@polkadot/util-crypto has multiple versions, ensure that there is only one installed.
Either remove and explicitly install matching versions or dedupe using your package manager.
The following conflicting packages were found:
        cjs 8.4.1       D:\\acala_hardhat\\hello-world\\node_modules\\@acala-network\\eth-transactions\\node_modules\\@polkadot\\util-crypto
        cjs 8.7.1       D:\\acala_hardhat\\hello-world\\node_modules\\@polkadot\\util-crypto
@polkadot/wasm-crypto has multiple versions, ensure that there is only one installed.
Either remove and explicitly install matching versions or dedupe using your package manager.
The following conflicting packages were found:
        cjs 4.6.1       D:\\acala_hardhat\\hello-world\\node_modules\\@acala-network\\eth-transactions\\node_modules\\@polkadot\\wasm-crypto
        cjs 5.1.1       D:\\acala_hardhat\\hello-world\\node_modules\\@polkadot\\util-crypto\\node_modules\\@polkadot\\wasm-crypto
@polkadot/util has multiple versions, ensure that there is only one installed.
Either remove and explicitly install matching versions or dedupe using your package manager.
The following conflicting packages were found:
        cjs 8.7.1       D:\\acala_hardhat\\hello-world\\node_modules\\@acala-network\\eth-providers\\node_modules\\@polkadot\\api-augment\\node_modules\\@polkadot\\util
        cjs 8.7.1       D:\\acala_hardhat\\hello-world\\node_modules\\@acala-network\\eth-providers\\node_modules\\@polkadot\\rpc-augment\\node_modules\\@polkadot\\util
        cjs 8.7.1       D:\\acala_hardhat\\hello-world\\node_modules\\@acala-network\\eth-providers\\node_modules\\@polkadot\\types-augment\\node_modules\\@polkadot\\util
        cjs 8.4.1       D:\\acala_hardhat\\hello-world\\node_modules\\@acala-network\\eth-transactions\\node_modules\\@polkadot\\util
        cjs 8.7.1       D:\\acala_hardhat\\hello-world\\node_modules\\@polkadot\\util
        cjs 8.4.1       D:\\acala_hardhat\\hello-world\\node_modules\\@acala-network\\eth-providers\\node_modules\\@polkadot\\util
@polkadot/util-crypto has multiple versions, ensure that there is only one installed.
Either remove and explicitly install matching versions or dedupe using your package manager.
The following conflicting packages were found:
        cjs 8.4.1       D:\\acala_hardhat\\hello-world\\node_modules\\@acala-network\\eth-transactions\\node_modules\\@polkadot\\util-crypto
        cjs 8.7.1       D:\\acala_hardhat\\hello-world\\node_modules\\@polkadot\\util-crypto
        cjs 8.4.1       D:\\acala_hardhat\\hello-world\\node_modules\\@acala-network\\eth-providers\\node_modules\\@polkadot\\util-crypto
@polkadot/wasm-crypto has multiple versions, ensure that there is only one installed.
Either remove and explicitly install matching versions or dedupe using your package manager.
The following conflicting packages were found:
        cjs 4.6.1       D:\\acala_hardhat\\hello-world\\node_modules\\@acala-network\\eth-transactions\\node_modules\\@polkadot\\wasm-crypto
        cjs 5.1.1       D:\\acala_hardhat\\hello-world\\node_modules\\@polkadot\\util-crypto\\node_modules\\@polkadot\\wasm-crypto
        cjs 4.6.1       D:\\acala_hardhat\\hello-world\\node_modules\\@acala-network\\eth-providers\\node_modules\\@polkadot\\wasm-crypto
@polkadot/util has multiple versions, ensure that there is only one installed.
Either remove and explicitly install matching versions or dedupe using your package manager.
The following conflicting packages were found:
        cjs 8.7.1       D:\\acala_hardhat\\hello-world\\node_modules\\@acala-network\\eth-providers\\node_modules\\@polkadot\\api-augment\\node_modules\\@polkadot\\util
        cjs 8.7.1       D:\\acala_hardhat\\hello-world\\node_modules\\@acala-network\\eth-providers\\node_modules\\@polkadot\\rpc-augment\\node_modules\\@polkadot\\util
        cjs 8.7.1       D:\\acala_hardhat\\hello-world\\node_modules\\@acala-network\\eth-providers\\node_modules\\@polkadot\\types-augment\\node_modules\\@polkadot\\util
        cjs 8.4.1       D:\\acala_hardhat\\hello-world\\node_modules\\@acala-network\\eth-transactions\\node_modules\\@polkadot\\util
        cjs 8.7.1       D:\\acala_hardhat\\hello-world\\node_modules\\@polkadot\\util
        cjs 8.4.1       D:\\acala_hardhat\\hello-world\\node_modules\\@acala-network\\eth-providers\\node_modules\\@polkadot\\util
        cjs 8.7.1       D:\\acala_hardhat\\hello-world\\node_modules\\@acala-network\\eth-providers\\node_modules\\@open-web3\\orml-api-derive\\node_modules\\@polkadot\\util
@polkadot/rpc-core has multiple versions, ensure that there is only one installed.
Either remove and explicitly install matching versions or dedupe using your package manager.
The following conflicting packages were found:
        cjs 7.11.1      D:\\acala_hardhat\\hello-world\\node_modules\\@polkadot\\api-derive\\node_modules\\@polkadot\\rpc-core
        cjs 7.15.1      D:\\acala_hardhat\\hello-world\\node_modules\\@acala-network\\eth-providers\\node_modules\\@open-web3\\orml-api-derive\\node_modules\\@polkadot\\rpc-core
@polkadot/types has multiple versions, ensure that there is only one installed.
Either remove and explicitly install matching versions or dedupe using your package manager.
The following conflicting packages were found:
        cjs 7.11.1      D:\\acala_hardhat\\hello-world\\node_modules\\@polkadot\\api-derive\\node_modules\\@polkadot\\types
        cjs 7.15.1      D:\\acala_hardhat\\hello-world\\node_modules\\@acala-network\\eth-providers\\node_modules\\@open-web3\\orml-api-derive\\node_modules\\@polkadot\\types

标签： yarnpkg polkadot

【解决方案1】：

见这里：https://substrate.stackexchange.com/questions/2399/how-to-prevent-remove-duplicate-modules-and-mismatched-version-numbers-i-e

将您的 polkadot 分辨率设置为与 polkadot apps 相同的值，您应该一切顺利。这是他们目前设置的：

注意：我还必须更改我的依赖项以匹配这些版本，但控制台现在更干净了。

【讨论】：