[Bug?]: enableGlobalCache default is not true

[ArloL]

Self-service

• I'd be willing to implement a fix

Describe the bug

Thanks for all you efforts on making yarn a great piece of software :)

I believe I have found a mistake in the documentation or maybe a bug:

https://yarnpkg.com/configuration/yarnrc#enableGlobalCache says that the default is true.

I just installed yarn for the first time following these instructions and for me it is set to false.

$ yarn config get enableGlobalCache
false
$ grep enableGlobalCache ~/.yarnrc.yml
# returns no results
$ grep enableGlobalCache .yarnrc.yml
# returns no results
$ yarn config --why
…
➤ YN0000: enableGlobalCache             <default>                                             false
…

Am I missing something?

To reproduce

Sadly https://yarnpkg.com/advanced/sherlock returns a Page Not Found error. I found https://website--yarn2.netlify.app/advanced/sherlock but the playground does not work for me: Internal Server Error. But it works with any yarn berry setup.

Environment

System:
  OS: macOS 13.5.1
  CPU: (10) arm64 Apple M1 Pro
Binaries:
  Node: 20.5.1 - /private/var/folders/8z/ppyfj7sd3_52p715brzb6pdm0000gn/T/xfs-2036de14/node
  Yarn: 3.6.2 - /private/var/folders/8z/ppyfj7sd3_52p715brzb6pdm0000gn/T/xfs-2036de14/yarn
  npm: 9.8.0 - /opt/homebrew/bin/npm
npmPackages:
  jest: ^29.2.2 => 29.6.3

Additional context

No response

[ArloL]

The documentation I found is for v4. Which it only says on the homepage. Is there any way to add that info to all pages?

[trivikr]

Yarn 4.0.0 is stable, and enableGlobalCache is now true by default.

$ yarn --version
4.0.0

$ yarn config enableGlobalCache
└─ enableGlobalCache
   ├─ Description: If true, the system-wide cache folder will be used regardless of `cache-folder`
   ├─ Source: <default>
   └─ Value: true

It's reflected in the documentation too at https://yarnpkg.com/configuration/yarnrc#enableGlobalCache

This issue can be closed.

[dennisameling]

Any chance this could be added to the changelog for v4? Our CI pipeline was configured as YARN_CACHE_FOLDER=./.yarn/cache yarn install --immutable, but after upgrading to v4, that cache folder is no longer being used because enableGlobalCache now defaults to true. This took a bit of work to figure out, and it'd be great if we can prevent folks who are upgrading from running into the same issue 😊 thanks!

We're now using YARN_ENABLE_GLOBAL_CACHE=false YARN_CACHE_FOLDER=./.yarn/cache yarn install --immutable in CI instead.

[merceyz]

Any chance this could be added to the changelog for v4?

Feel free to make a PR adding it to https://github.com/yarnpkg/berry/blob/0ee621357efda7a6ce292f35a3755537f191de5f/CHANGELOG.md.

[odinho]

Interestingly our upgrade from 3 to 4 did not do this, it explicitly set enableGlobalCache: false in the settings file:

diff --git .yarnrc.yml .yarnrc.yml
index 6daead46b6..4b8bff8940 100644
--- .yarnrc.yml
+++ .yarnrc.yml
@@ -1,9 +1,7 @@
+compressionLevel: mixed
+
+enableGlobalCache: false
+
 nodeLinker: node-modules
 
-plugins:
-  - path: .yarn/plugins/@yarnpkg/plugin-workspace-tools.cjs
-    spec: '@yarnpkg/plugin-workspace-tools'
-  - path: .yarn/plugins/@yarnpkg/plugin-interactive-tools.cjs
-    spec: '@yarnpkg/plugin-interactive-tools'
-
-yarnPath: .yarn/releases/yarn-3.6.4.cjs
+yarnPath: .yarn/releases/yarn-4.0.2.cjs

[Noyabronok]

Interestingly our upgrade from 3 to 4 did not do this, it explicitly set enableGlobalCache: false in the settings file:

+compressionLevel: mixed
+enableGlobalCache: false

Same here for 3.2.3 -> 4.1.1 upgrade, including compressionLevel: mixed. Is this the desired behavior?

[clemyan]

@Noyabronok

Yes. See #5895 (comment)