为 pub 命令配置环境变量

Environment variables allow you to customize pub to suit your needs.

PUB_CACHE
Some of pub's dependencies are downloaded to the pub cache. By default, this directory is located under $HOME/.pub-cache (on macOS and Linux), or in %LOCALAPPDATA%\Pub\Cache (on Windows). (The precise location of the cache may vary depending on the Windows version.) You can use the PUB_CACHE environment variable to specify another location. For more information, see The system package cache.
PUB_HOSTED_URL
Pub downloads dependencies from the pub.dev site. To specify the location of a particular mirror server, use the PUB_HOSTED_URL environment variable. For example:
bash
PUB_HOSTED_URL = https://pub.example.com

For more information about using a private package repository, see Overriding the default package repository.