
This rolls the engine from: 965fbbed1776545ee681cb57f3fb1d0c2000bbcb to b5f5e6332cb4987e9e38ffaa267733ec0a8705ba. A Dart SDK roll in this range changed the format of the compileExpression RPC VMService endpoint, necessitating a tool patch.
Dart SDK dependency
The bin/internal/engine.version
file controls which version of the Flutter engine to use.
The file contains the commit hash of a commit in the https://github.com/flutter/engine repository.
That hash must have successfully been compiled on https://build.chromium.org/p/client.flutter/ and had its artifacts (the binaries that run on Android and iOS, the compiler, etc) successfully uploaded to Google Cloud Storage.
The /bin/internal/engine.merge_method
file controls how we merge a pull
request created by the engine auto-roller. If it's squash
, there's only one
commit for a pull request no matter how many engine commits there are inside
that pull request. If it's rebase
, the number of commits in the framework is
equal to the number of engine commits in the pull request. The latter method
makes it easier to detect regressions but costs more test resources.