From b45a8f464d67ee3733cd5d485606285fc993afdf Mon Sep 17 00:00:00 2001
From: Greg Spencer <gspencergoog@users.noreply.github.com>
Date: Thu, 21 Feb 2019 08:47:24 -0800
Subject: [PATCH] Revert "Remove unused --packages argument to gen_snapshot.
 (#28101)" (#28265)

This reverts commit 1c021506df23434dd5e881ba0e4d8c5a9f88df8d.

The pre-commit tests never actually ran, so it looked green when it wasn't. This breaks 16 tests that depend on the argument existing, even though it isn't actually used.
---
 packages/flutter_tools/lib/src/base/build.dart | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/packages/flutter_tools/lib/src/base/build.dart b/packages/flutter_tools/lib/src/base/build.dart
index 8e60120428..7be3b8c203 100644
--- a/packages/flutter_tools/lib/src/base/build.dart
+++ b/packages/flutter_tools/lib/src/base/build.dart
@@ -46,11 +46,13 @@ class GenSnapshot {
 
   Future<int> run({
     @required SnapshotType snapshotType,
+    @required String packagesPath,
     IOSArch iosArch,
     Iterable<String> additionalArgs = const <String>[],
   }) {
     final List<String> args = <String>[
       '--causal_async_stacks',
+      '--packages=$packagesPath',
     ]..addAll(additionalArgs);
 
     final String snapshotterPath = getSnapshotterPath(snapshotType);
@@ -191,6 +193,7 @@ class AOTSnapshotter {
     final SnapshotType snapshotType = SnapshotType(platform, buildMode);
     final int genSnapshotExitCode = await genSnapshot.run(
       snapshotType: snapshotType,
+      packagesPath: packageMap.packagesPath,
       additionalArgs: genSnapshotArgs,
       iosArch: iosArch,
     );
@@ -534,6 +537,7 @@ class JITSnapshotter {
     final SnapshotType snapshotType = SnapshotType(platform, buildMode);
     final int genSnapshotExitCode = await genSnapshot.run(
       snapshotType: snapshotType,
+      packagesPath: packagesPath,
       additionalArgs: genSnapshotArgs,
     );
     if (genSnapshotExitCode != 0) {