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Remove requirement for experiment flag for Widget Preview gated on Flutter version with important fixes #5717
Description
Currently we only show the widget preview if dart.experimentalFlutterWidgetPreview is set and flutterCapabilities.supportsWidgetPreview (Flutter SDK is >= 3.36.0-1).
We should remove the requirement for the experiment flag for a version of the SDK that has all the fixes we think are necessary before showing this by default (by implementing a new capability flutterCapabilities.supportsWidgetPreviewByDefault).
I think flutter/flutter#175783 is the most significant fix, so we could gate it on the version that lands in, which would mean any subsequent beta branch would have it enabled by default (@bkonyi - does this seem good to you, or are there any other changes/fixes you think we should require?).
(fyi @jwren @anderdobo)
Activity
DanTup commentedon Sep 29, 2025
Related PRs:
.dart_tool/widget_preview_scaffoldduringflutter cleanflutter/flutter#175664 - Don't crash onflutter cleanThe first one (which is probably the only critical one) has landed in flutter/flutter@b9ffd90 but there has been no version tag since it landed so we don't have a version we can use for that yet.
Once we have a version we can add it to the change on the enable-widget-preview-by-default branch and merge it in.
DanTup commentedon Oct 21, 2025
This was done in dc30f6c for vNext and cherry-picked into stable v3.120.1 in 0559777.