DirPath | Multiple:
The core_dir variable points out the directory used for all development platform packages (toolchains, frameworks, SDKs, upload and debug tools), global libraries for Library Dependency Finder (LDF), and other PlatformIO Core service data. The size of this folder will depend on the number of installed development platforms.
The default value is the user’s home directory:
This option can also be configured by the global environment variable
[platformio] core_dir = /path/to/custom/pio-core/storage