Cache restore failed with symlinks in Windows

I’m working with a monorepo containing several npm packages. The root npm package.json references children npm packages using relative path. When npm ci / npm i is executed, a symlink is created for each child package to the root node_modules folder.

I cached the root node_modules folder.

The first workflow run is good, here are the steps:

1. Cache restore miss
2. Run npm ci
3. Run npm build
4. Success
5. Cache save

The second run is no good:

1. Cache restore hit
2. Skip run npm ci
3. Run npm build

This is only happening in windows-latest environment. I tried to reproduce the issue locally and found out that tar did not recreate the symlinks.

Any guidance on how to proceed?

[mzabaluev]

@ordian and possibly others with the same symptoms:

Here is a repro.

I have no idea about the symlink issues discussed here, but your issue looks like #198 and it has a solution.

[github-actions[bot]]

This issue was closed because it has been inactive for 5 days since being marked as stale.