Sets the default compression to 0 #5526
Merged
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
What's the problem this PR addresses?
Cache compression doesn't seem the best option nowadays:
Its main advantage is for some amazingly large packages, where storing them inside a Git repository would be impossible (GitHub has a 600MB file limit). But since we changed the cache default to
enableGlobalCache: true
, this isn't relevant by default, so the cache compression should be set to zero.One potential issue is how it may give the impression that Yarn became worse for global cache users. We don't believe it's the case (Git can delta uncompressed archives in some measure, making it less expensive to upgrade from one package version to another), but to the average eye it may not look as such.
How did you fix it?
This diff sets the new default compression setting to 0.
To avoid breaking projects' (or at least not making the migration more difficult), I added a rule to automatically set
compressionLevel
(andenableGlobalCache
) to their 3.x default values when runningyarn install
in a 3.x project. When users are ready they can remove these settings and re-run the install.I kept the current compression level on our repository to avoid changing all archives again. I think we'll have to think of purging the repository in some form to migrate it to
compressionLevel: 0
.Checklist