diff --git a/pkg/.gitignore b/pkg/.gitignore
index 46ccecf2cff..e741cd35ab8 100644
--- a/pkg/.gitignore
+++ b/pkg/.gitignore
@@ -9,4 +9,3 @@
 /*.xcodeproj
 .dart_tool
 .idea/
-.packages
diff --git a/pkg/analyzer/.gitignore b/pkg/analyzer/.gitignore
index 186d37df055..1179ce2ec65 100644
--- a/pkg/analyzer/.gitignore
+++ b/pkg/analyzer/.gitignore
@@ -1,5 +1,4 @@
 # Files and directories created by pub
-.packages
 .dart_tool/
 build/
 # Remove the following pattern if you wish to check in your lock file
diff --git a/pkg/analyzer_plugin/.gitignore b/pkg/analyzer_plugin/.gitignore
index 79f51c3d50b..6c0f47fd788 100644
--- a/pkg/analyzer_plugin/.gitignore
+++ b/pkg/analyzer_plugin/.gitignore
@@ -1,3 +1,2 @@
 .dart_tool
-.packages
 pubspec.lock
diff --git a/pkg/compiler/.gitignore b/pkg/compiler/.gitignore
index 52a27d1f9ca..cb3e7cf51b0 100644
--- a/pkg/compiler/.gitignore
+++ b/pkg/compiler/.gitignore
@@ -1,2 +1 @@
 .dart_tool/
-.packages
diff --git a/pkg/dart2js_info/.gitignore b/pkg/dart2js_info/.gitignore
index 2bc83b81c8c..4432904188f 100644
--- a/pkg/dart2js_info/.gitignore
+++ b/pkg/dart2js_info/.gitignore
@@ -8,7 +8,6 @@
 .settings/
 build/
 packages
-.packages
 pubspec.lock
 bin/inference/client.dart.js*
 .dart_tool/
diff --git a/pkg/dds/.gitignore b/pkg/dds/.gitignore
index 4918c4e0889..4c48bff7e47 100644
--- a/pkg/dds/.gitignore
+++ b/pkg/dds/.gitignore
@@ -1,6 +1,5 @@
 # See https://dart.dev/guides/libraries/private-files
 .dart_tool/
-.packages
 build/
 pubspec.lock
 *.code-workspace
diff --git a/pkg/dds_service_extensions/.gitignore b/pkg/dds_service_extensions/.gitignore
index 65c34dc86e3..fa8e3e7b49f 100644
--- a/pkg/dds_service_extensions/.gitignore
+++ b/pkg/dds_service_extensions/.gitignore
@@ -1,6 +1,5 @@
 # Files and directories created by pub.
 .dart_tool/
-.packages
 
 # Conventional directory for build outputs.
 build/
diff --git a/pkg/dev_compiler/.gitignore b/pkg/dev_compiler/.gitignore
index ee819336de6..bd7fcb557c2 100644
--- a/pkg/dev_compiler/.gitignore
+++ b/pkg/dev_compiler/.gitignore
@@ -2,7 +2,6 @@
 .pub
 build/
 packages
-.packages
 
 # Ignore files created by tools.
 *.dart.precompiled.js
diff --git a/pkg/kernel/.gitignore b/pkg/kernel/.gitignore
index a151f3dd190..a1aaf0e099d 100644
--- a/pkg/kernel/.gitignore
+++ b/pkg/kernel/.gitignore
@@ -1,4 +1,3 @@
-.packages
 .pub
 packages
 pubspec.lock
diff --git a/pkg/native_stack_traces/.gitignore b/pkg/native_stack_traces/.gitignore
index 49ce72d76a2..05d0295023c 100644
--- a/pkg/native_stack_traces/.gitignore
+++ b/pkg/native_stack_traces/.gitignore
@@ -1,3 +1,2 @@
 .dart_tool/
-.packages
 pubspec.lock
diff --git a/pkg/scrape/.gitignore b/pkg/scrape/.gitignore
index 37c2b4481ab..a6c46189ed1 100644
--- a/pkg/scrape/.gitignore
+++ b/pkg/scrape/.gitignore
@@ -1,5 +1,4 @@
 # Files and directories created by pub
-.packages
 .dart_tool/
 
 # Remove the following pattern if you wish to check in your lock file
diff --git a/pkg/test_runner/.gitignore b/pkg/test_runner/.gitignore
index b26da7f84b9..f8a8da6bbf6 100644
--- a/pkg/test_runner/.gitignore
+++ b/pkg/test_runner/.gitignore
@@ -1,3 +1,2 @@
 # Don’t commit the following files and directories created by pub.
-.packages
 pubspec.lock
diff --git a/pkg/vm_service/.gitignore b/pkg/vm_service/.gitignore
index 2316a7c43a0..aec67b3d21c 100644
--- a/pkg/vm_service/.gitignore
+++ b/pkg/vm_service/.gitignore
@@ -1,6 +1,5 @@
 *.iml
 .dart_tool
-.packages
 pubspec.lock
 
 java/build/
diff --git a/pkg/vm_snapshot_analysis/.gitignore b/pkg/vm_snapshot_analysis/.gitignore
index 49ce72d76a2..05d0295023c 100644
--- a/pkg/vm_snapshot_analysis/.gitignore
+++ b/pkg/vm_snapshot_analysis/.gitignore
@@ -1,3 +1,2 @@
 .dart_tool/
-.packages
 pubspec.lock
diff --git a/samples/ffi/http/.gitignore b/samples/ffi/http/.gitignore
index a18c42e5cee..8b1b413d85d 100644
--- a/samples/ffi/http/.gitignore
+++ b/samples/ffi/http/.gitignore
@@ -1,5 +1,4 @@
 .dart_tool
-.packages
 pubspec.lock
 lib/libfake_http.so
 lib/libfake_http.dylib
diff --git a/samples/ffi/sqlite/.gitignore b/samples/ffi/sqlite/.gitignore
index 7a6bc2eeab3..025e11cecf1 100644
--- a/samples/ffi/sqlite/.gitignore
+++ b/samples/ffi/sqlite/.gitignore
@@ -1,6 +1,5 @@
 .dart_tool
 .gdb_history
-.packages
 .vscode
 pubspec.lock
 test.db
diff --git a/tools/experimental_features.yaml b/tools/experimental_features.yaml
index d0429ec5e17..34d85a4ad96 100644
--- a/tools/experimental_features.yaml
+++ b/tools/experimental_features.yaml
@@ -46,8 +46,8 @@
 #    experiment is disabled by default, but may be enabled by specifying the
 #    flag on the command line. (e.g. --enable-experiment=non-nullable)
 #
-#    A version less than this version may be specified in a .packages file
-#    or in a library language version override (e.g. // @dart = 2.1)
+#    A version less than this version may be specified in a package config file
+#    or in a library language version override (e.g. // @dart = 2.12)
 #    to disable this feature. For more on library language version override, see
 #    https://dart.dev/to/language-version-override
 #
diff --git a/tools/package_deps/.gitignore b/tools/package_deps/.gitignore
index 3d64647b504..67173097c2f 100644
--- a/tools/package_deps/.gitignore
+++ b/tools/package_deps/.gitignore
@@ -1,6 +1,5 @@
 # Files and directories created by pub
 .dart_tool/
-.packages
 
 # Conventional directory for build outputs
 build/