Prebuild step fails because it updates the yarn.lock file (managed)

[wkozyra]

yarn 2 enables immutable option by default when running on CI (e.g. if CI env is set) you can override it by specifying env in your eas.json build profile "YARN_ENABLE_IMMUTABLE_INSTALLS": "false"

EAS Prebuild Steps Fails with Yarn Berry

The build fails at the prebuild step. Yarn berry is well configured and integrated such that a local build succeeds. My understanding of the failing looks rather easy to fix on your end: your build service seems to tamper with the package.json file and inject new dependencies. After which the service runs a new yarn install but it looks like the immutable flag is set. Because of those changes in the package.json, the install aborts with the below message: The lockfile would have been modified …