diff --git a/sdk/bin/dart2js b/sdk/bin/dart2js
index 17559bf13b9..d2e983343f4 100755
--- a/sdk/bin/dart2js
+++ b/sdk/bin/dart2js
@@ -52,4 +52,4 @@ DART_ROOT="$(cd "${SDK_DIR}/.." ; pwd -P)"
 
 DART2JS="$DART_ROOT/pkg/compiler/lib/src/dart2js.dart"
 
-exec "$DART" "${EXTRA_VM_OPTIONS[@]}" "$DART2JS" "${EXTRA_OPTIONS[@]}" "$@"
+exec "$DART" "--packages=$DART_ROOT/.packages" "${EXTRA_VM_OPTIONS[@]}" "$DART2JS" "${EXTRA_OPTIONS[@]}" "$@"
diff --git a/sdk/bin/dart2js.bat b/sdk/bin/dart2js.bat
index 4c6669a36bf..76601828b70 100644
--- a/sdk/bin/dart2js.bat
+++ b/sdk/bin/dart2js.bat
@@ -39,7 +39,7 @@ if %DART_ROOT:~-1%==\ set DART_ROOT=%DART_ROOT:~0,-1%
 
 set DART2JS=%DART_ROOT%\pkg\compiler\lib\src\dart2js.dart
 
-"%DART%" %EXTRA_VM_OPTIONS% "%DART2JS%" %EXTRA_OPTIONS% %*
+"%DART%" "--packages=%DART_ROOT%\.packages" %EXTRA_VM_OPTIONS% "%DART2JS%" %EXTRA_OPTIONS% %*
 
 endlocal
 
diff --git a/sdk/bin/dartanalyzer b/sdk/bin/dartanalyzer
index c508c625503..34ce8956351 100755
--- a/sdk/bin/dartanalyzer
+++ b/sdk/bin/dartanalyzer
@@ -45,4 +45,4 @@ DART_ROOT="$(cd "${SDK_DIR}/.." ; pwd -P)"
 
 ANALYZER="$DART_ROOT/pkg/analyzer_cli/bin/analyzer.dart"
 
-exec "$DART" "${EXTRA_VM_OPTIONS[@]}" "$ANALYZER" "$SDK_ARG" "$@"
+exec "$DART" "--packages=$DART_ROOT/.packages" "${EXTRA_VM_OPTIONS[@]}" "$ANALYZER" "$SDK_ARG" "$@"
diff --git a/sdk/bin/dartanalyzer.bat b/sdk/bin/dartanalyzer.bat
index f03dfbd8c7d..4e8ba547df8 100644
--- a/sdk/bin/dartanalyzer.bat
+++ b/sdk/bin/dartanalyzer.bat
@@ -40,7 +40,7 @@ if %DART_ROOT:~-1%==\ set DART_ROOT=%DART_ROOT:~0,-1%
 
 set ANALYZER=%DART_ROOT%\pkg\analyzer_cli\bin\analyzer.dart
 
-"%DART%" %EXTRA_VM_OPTIONS% "%ANALYZER%" "%SDK_ARG%" %*
+"%DART%" "--packages=%DART_ROOT%\.packages" %EXTRA_VM_OPTIONS% "%ANALYZER%" "%SDK_ARG%" %*
 
 endlocal
 
diff --git a/sdk/bin/dartdevc b/sdk/bin/dartdevc
index 246f6b75c7b..5b75ad2fdec 100755
--- a/sdk/bin/dartdevc
+++ b/sdk/bin/dartdevc
@@ -45,4 +45,4 @@ DART_ROOT="$(cd "${SDK_DIR}/.." ; pwd -P)"
 
 DEV_COMPILER="$DART_ROOT/pkg/dev_compiler/bin/dartdevc.dart"
 
-exec "$DART" "${EXTRA_VM_OPTIONS[@]}" "$DEV_COMPILER" "$SDK_ARG" "$@"
+exec "$DART" "--packages=$DART_ROOT/.packages" "${EXTRA_VM_OPTIONS[@]}" "$DEV_COMPILER" "$SDK_ARG" "$@"
diff --git a/sdk/bin/dartdevc.bat b/sdk/bin/dartdevc.bat
index 5c714ca7923..dd49b4337fe 100644
--- a/sdk/bin/dartdevc.bat
+++ b/sdk/bin/dartdevc.bat
@@ -36,7 +36,7 @@ if %DART_ROOT:~-1%==\ set DART_ROOT=%DART_ROOT:~0,-1%
 
 set DEV_COMPILER=%DART_ROOT%\third_party\pkg\dev_compiler\bin\dartdevc.dart
 
-"%DART%" %EXTRA_VM_OPTIONS% "DEV_COMPILER%" "%SDK_ARG%" %*
+"%DART%" "--packages=%DART_ROOT%\.packages" %EXTRA_VM_OPTIONS% "DEV_COMPILER%" "%SDK_ARG%" %*
 
 endlocal
 
diff --git a/sdk/bin/dartfmt b/sdk/bin/dartfmt
index a671c502f86..ad541407ae5 100755
--- a/sdk/bin/dartfmt
+++ b/sdk/bin/dartfmt
@@ -28,4 +28,4 @@ DART_ROOT="$(cd "${SDK_DIR}/.." ; pwd -P)"
 
 DARTFMT="$DART_ROOT/third_party/pkg_tested/dart_style/bin/format.dart"
 
-exec "$DART" "$DARTFMT" "$@"
+exec "$DART" "--packages=$DART_ROOT/.packages" "$DARTFMT" "$@"
diff --git a/sdk/bin/dartfmt.bat b/sdk/bin/dartfmt.bat
index edab2ddefe0..cd5930214bc 100644
--- a/sdk/bin/dartfmt.bat
+++ b/sdk/bin/dartfmt.bat
@@ -27,7 +27,7 @@ if %DART_ROOT:~-1%==\ set DART_ROOT=%DART_ROOT:~0,-1%
 
 set DARTFMT=%DART_ROOT%\third_party\pkg_tested\dart_style\bin\format.dart
 
-"%DART%" "%DARTFMT%" %*
+"%DART%" "--packages=%DART_ROOT%\.packages" "%DARTFMT%" %*
 
 endlocal
 
diff --git a/sdk/bin/pub b/sdk/bin/pub
index 403635f7491..20e9d3d8970 100755
--- a/sdk/bin/pub
+++ b/sdk/bin/pub
@@ -82,4 +82,4 @@ DART="$BUILD_DIR/dart-sdk/bin/dart"
 
 # Run pub.
 PUB="$SDK_DIR/../third_party/pkg/pub/bin/pub.dart"
-exec "$DART" "${VM_OPTIONS[@]}" "$PUB" "$@"
+exec "$DART" "--packages=$SDK_DIR/../.packages" "${VM_OPTIONS[@]}" "$PUB" "$@"
diff --git a/sdk/bin/pub.bat b/sdk/bin/pub.bat
index 03c7bf0899f..2ad2baacbe3 100644
--- a/sdk/bin/pub.bat
+++ b/sdk/bin/pub.bat
@@ -35,7 +35,7 @@ set DART=%BUILD_DIR%\dart-sdk\bin\dart
 
 rem Run pub.
 set PUB="%SDK_DIR%\..\third_party\pkg\pub\bin\pub.dart"
-"%DART%" %VM_OPTIONS% "%PUB%" %*
+"%DART%" "--packages=%SDK_DIR%\..\.packages" %VM_OPTIONS% "%PUB%" %*
 
 endlocal