How to install local package with Yarn v3?

Question

I bashed my head against the wall trying to install a local package using Yarn v3. Here all the things I tried:

1. Run yarn add file:../hardhat-packager
2. Run yarn add ../hardhat-packager
3. Manually add "hardhat-packager": "file:../hardhat-packager" in package.json
4. Manually add "hardhat-packager": "../hardhat-packager" in package.json

All of the above resulted in Yarn getting stuck at the installation step, as shown in the screenshot below. I waited more than five minutes and I made sure that my Internet connection is fast.

I know that there is an option to link a package, but that is not quite white I want. I don't want symlinks, I want the actual package files copied over.

How can I do this? I'm using Yarn v3.2.0

Answer 1

To install local package for Yarn 3 you should use pattern packagename@location.

For an example:

yarn add hardhat-packager@file:../hardhat-packager

or if you have created a tarball with yarn pack it should look like:

yarn add hardhat-packager@file:../some_path/hardhat-packager-v0.1.0.tgz