diff --git a/bricks/hooks/hooks/post_gen.dart b/bricks/hooks/hooks/post_gen.dart
index b80def05a..00df38eb0 100755
--- a/bricks/hooks/hooks/post_gen.dart
+++ b/bricks/hooks/hooks/post_gen.dart
@@ -1 +1 @@
-import 'dart:io';import 'package:mason/mason.dart';void run(HookContext context){final file=File('.post_gen.txt');file.writeAsStringSync('post_gen: {{name}}');}
\ No newline at end of file
+import 'dart:io';import 'package:mason/mason.dart';void run(HookContext context){final file=File('.post_gen.txt');file.writeAsStringSync('post_gen: ${context.vars['name']}');}
\ No newline at end of file
diff --git a/bricks/hooks/hooks/pre_gen.dart b/bricks/hooks/hooks/pre_gen.dart
index b7eee9c46..c00624ac6 100644
--- a/bricks/hooks/hooks/pre_gen.dart
+++ b/bricks/hooks/hooks/pre_gen.dart
@@ -1 +1 @@
-import 'dart:io';import 'package:mason/mason.dart';void run(HookContext context){final file=File('.pre_gen.txt');file.writeAsStringSync('pre_gen: {{name}}');}
\ No newline at end of file
+import 'dart:io';import 'package:mason/mason.dart';void run(HookContext context){final file=File('.pre_gen.txt');file.writeAsStringSync('pre_gen: ${context.vars['name']}');}
\ No newline at end of file
diff --git a/packages/mason/lib/src/hooks.dart b/packages/mason/lib/src/hooks.dart
index 1b37d9988..09fb44af7 100644
--- a/packages/mason/lib/src/hooks.dart
+++ b/packages/mason/lib/src/hooks.dart
@@ -294,7 +294,7 @@ class GeneratorHooks {
 
     Uri? uri;
     try {
-      uri = _getHookUri(hook.runSubstitution(vars).content);
+      uri = _getHookUri(hook.content);
       // ignore: avoid_catching_errors
     } on ArgumentError {
       throw HookInvalidCharactersException(hook.path);
@@ -357,22 +357,6 @@ class HookFile {
 
   /// The template file content.
   final List<int> content;
-
-  /// Performs a substitution on the [path] based on the incoming [parameters].
-  FileContents runSubstitution(Map<String, dynamic> parameters) {
-    return FileContents(path, _createContent(parameters));
-  }
-
-  List<int> _createContent(Map<String, dynamic> vars) {
-    try {
-      final decoded = utf8.decode(content);
-      if (!decoded.contains(_delimeterRegExp)) return content;
-      final rendered = decoded.render(vars);
-      return utf8.encode(rendered);
-    } on Exception {
-      return content;
-    }
-  }
 }
 
 /// A reference to core mason APIs to be used within hooks.
diff --git a/packages/mason/test/bundles/hooks_bundle.dart b/packages/mason/test/bundles/hooks_bundle.dart
index 47695ccab..76221b548 100644
--- a/packages/mason/test/bundles/hooks_bundle.dart
+++ b/packages/mason/test/bundles/hooks_bundle.dart
@@ -1,5 +1,5 @@
 // GENERATED CODE - DO NOT MODIFY BY HAND
-// ignore_for_file: prefer_single_quotes, public_member_api_docs, lines_longer_than_80_chars, implicit_dynamic_list_literal, implicit_dynamic_map_literal
+// ignore_for_file: type=lint, implicit_dynamic_list_literal, implicit_dynamic_map_literal, inference_failure_on_collection_literal
 
 import 'package:mason/mason.dart';
 
@@ -11,13 +11,13 @@ final hooksBundle = MasonBundle.fromJson(<String, dynamic>{
     {
       "path": "post_gen.dart",
       "data":
-          "aW1wb3J0ICdkYXJ0OmlvJztpbXBvcnQgJ3BhY2thZ2U6bWFzb24vbWFzb24uZGFydCc7dm9pZCBydW4oSG9va0NvbnRleHQgY29udGV4dCl7ZmluYWwgZmlsZT1GaWxlKCcucG9zdF9nZW4udHh0Jyk7ZmlsZS53cml0ZUFzU3RyaW5nU3luYygncG9zdF9nZW46IHt7bmFtZX19Jyk7fQ==",
+          "aW1wb3J0ICdkYXJ0OmlvJztpbXBvcnQgJ3BhY2thZ2U6bWFzb24vbWFzb24uZGFydCc7dm9pZCBydW4oSG9va0NvbnRleHQgY29udGV4dCl7ZmluYWwgZmlsZT1GaWxlKCcucG9zdF9nZW4udHh0Jyk7ZmlsZS53cml0ZUFzU3RyaW5nU3luYygncG9zdF9nZW46ICR7Y29udGV4dC52YXJzWyduYW1lJ119Jyk7fQ==",
       "type": "text"
     },
     {
       "path": "pre_gen.dart",
       "data":
-          "aW1wb3J0ICdkYXJ0OmlvJztpbXBvcnQgJ3BhY2thZ2U6bWFzb24vbWFzb24uZGFydCc7dm9pZCBydW4oSG9va0NvbnRleHQgY29udGV4dCl7ZmluYWwgZmlsZT1GaWxlKCcucHJlX2dlbi50eHQnKTtmaWxlLndyaXRlQXNTdHJpbmdTeW5jKCdwcmVfZ2VuOiB7e25hbWV9fScpO30=",
+          "aW1wb3J0ICdkYXJ0OmlvJztpbXBvcnQgJ3BhY2thZ2U6bWFzb24vbWFzb24uZGFydCc7dm9pZCBydW4oSG9va0NvbnRleHQgY29udGV4dCl7ZmluYWwgZmlsZT1GaWxlKCcucHJlX2dlbi50eHQnKTtmaWxlLndyaXRlQXNTdHJpbmdTeW5jKCdwcmVfZ2VuOiAke2NvbnRleHQudmFyc1snbmFtZSddfScpO30=",
       "type": "text"
     },
     {
@@ -30,6 +30,7 @@ final hooksBundle = MasonBundle.fromJson(<String, dynamic>{
   "name": "hooks",
   "description": "A Hooks Example Template",
   "version": "0.1.0+1",
+  "environment": {"mason": "any"},
   "vars": {
     "name": {
       "type": "string",
diff --git a/packages/mason/test/src/bundler_test.dart b/packages/mason/test/src/bundler_test.dart
index 24bb0151c..3b1018423 100644
--- a/packages/mason/test/src/bundler_test.dart
+++ b/packages/mason/test/src/bundler_test.dart
@@ -247,7 +247,7 @@ void main() {
         expect(
           preGenHookFile.readAsStringSync(),
           equals(
-            '''import 'dart:io';import 'package:mason/mason.dart';void run(HookContext context){final file=File('.pre_gen.txt');file.writeAsStringSync('pre_gen: {{name}}');}''',
+            r'''import 'dart:io';import 'package:mason/mason.dart';void run(HookContext context){final file=File('.pre_gen.txt');file.writeAsStringSync('pre_gen: ${context.vars['name']}');}''',
           ),
         );
         final postGenHookFile = File(
@@ -257,7 +257,7 @@ void main() {
         expect(
           postGenHookFile.readAsStringSync(),
           equals(
-            '''import 'dart:io';import 'package:mason/mason.dart';void run(HookContext context){final file=File('.post_gen.txt');file.writeAsStringSync('post_gen: {{name}}');}''',
+            r'''import 'dart:io';import 'package:mason/mason.dart';void run(HookContext context){final file=File('.post_gen.txt');file.writeAsStringSync('post_gen: ${context.vars['name']}');}''',
           ),
         );
         final hookPubspecFile = File(
diff --git a/packages/mason/test/src/generator_test.dart b/packages/mason/test/src/generator_test.dart
index 6342efaa5..b93ed99bd 100644
--- a/packages/mason/test/src/generator_test.dart
+++ b/packages/mason/test/src/generator_test.dart
@@ -2,7 +2,6 @@
 import 'dart:io';
 
 import 'package:mason/mason.dart';
-import 'package:mason/src/generator.dart';
 import 'package:mocktail/mocktail.dart';
 import 'package:path/path.dart' as path;
 import 'package:test/test.dart';
@@ -957,20 +956,5 @@ void main() {
         });
       });
     });
-
-    group('HookFile', () {
-      group('runSubstitution', () {
-        test('handles malformed content', () {
-          final tempDir = Directory.systemTemp.createTempSync();
-          final bytes = [0x80, 0x00];
-          final template = HookFile.fromBytes(
-            path.join(tempDir.path, 'malformed.txt'),
-            bytes,
-          );
-          final file = template.runSubstitution(<String, dynamic>{});
-          expect(file.content, equals(bytes));
-        });
-      });
-    });
   });
 }
diff --git a/packages/mason_cli/test/bundles/hooks_bundle.dart b/packages/mason_cli/test/bundles/hooks_bundle.dart
index 5f7cf27ee..76221b548 100644
--- a/packages/mason_cli/test/bundles/hooks_bundle.dart
+++ b/packages/mason_cli/test/bundles/hooks_bundle.dart
@@ -11,25 +11,26 @@ final hooksBundle = MasonBundle.fromJson(<String, dynamic>{
     {
       "path": "post_gen.dart",
       "data":
-          "aW1wb3J0ICdkYXJ0OmlvJztpbXBvcnQgJ3BhY2thZ2U6bWFzb24vbWFzb24uZGFydCc7dm9pZCBydW4oSG9va0NvbnRleHQgY29udGV4dCl7ZmluYWwgZmlsZT1GaWxlKCcucG9zdF9nZW4udHh0Jyk7ZmlsZS53cml0ZUFzU3RyaW5nU3luYygncG9zdF9nZW46IHt7bmFtZX19Jyk7fQ==",
+          "aW1wb3J0ICdkYXJ0OmlvJztpbXBvcnQgJ3BhY2thZ2U6bWFzb24vbWFzb24uZGFydCc7dm9pZCBydW4oSG9va0NvbnRleHQgY29udGV4dCl7ZmluYWwgZmlsZT1GaWxlKCcucG9zdF9nZW4udHh0Jyk7ZmlsZS53cml0ZUFzU3RyaW5nU3luYygncG9zdF9nZW46ICR7Y29udGV4dC52YXJzWyduYW1lJ119Jyk7fQ==",
       "type": "text"
     },
     {
       "path": "pre_gen.dart",
       "data":
-          "aW1wb3J0ICdkYXJ0OmlvJztpbXBvcnQgJ3BhY2thZ2U6bWFzb24vbWFzb24uZGFydCc7dm9pZCBydW4oSG9va0NvbnRleHQgY29udGV4dCl7ZmluYWwgZmlsZT1GaWxlKCcucHJlX2dlbi50eHQnKTtmaWxlLndyaXRlQXNTdHJpbmdTeW5jKCdwcmVfZ2VuOiB7e25hbWV9fScpO30=",
+          "aW1wb3J0ICdkYXJ0OmlvJztpbXBvcnQgJ3BhY2thZ2U6bWFzb24vbWFzb24uZGFydCc7dm9pZCBydW4oSG9va0NvbnRleHQgY29udGV4dCl7ZmluYWwgZmlsZT1GaWxlKCcucHJlX2dlbi50eHQnKTtmaWxlLndyaXRlQXNTdHJpbmdTeW5jKCdwcmVfZ2VuOiAke2NvbnRleHQudmFyc1snbmFtZSddfScpO30=",
       "type": "text"
     },
     {
       "path": "pubspec.yaml",
       "data":
-          "bmFtZTogaG9va3NfaG9va3MKCmVudmlyb25tZW50OgogIHNkazogIj49Mi4xMi4wIDwzLjAuMCIKCmRlcGVuZGVuY2llczoKICBtYXNvbjogXjAuMS4wLWRldi41Cg==",
+          "bmFtZTogaG9va3NfaG9va3MKCmVudmlyb25tZW50OgogIHNkazogIj49Mi4xMi4wIDwzLjAuMCIKCmRlcGVuZGVuY2llczoKICBtYXNvbjoKICAgIGdpdDoKICAgICAgdXJsOiBodHRwczovL2dpdGh1Yi5jb20vZmVsYW5nZWwvbWFzb24KICAgICAgcGF0aDogcGFja2FnZXMvbWFzb24K",
       "type": "text"
     }
   ],
   "name": "hooks",
   "description": "A Hooks Example Template",
   "version": "0.1.0+1",
+  "environment": {"mason": "any"},
   "vars": {
     "name": {
       "type": "string",
diff --git a/packages/mason_cli/test/commands/bundle_test.dart b/packages/mason_cli/test/commands/bundle_test.dart
index 1af65af8b..1d1975e77 100644
--- a/packages/mason_cli/test/commands/bundle_test.dart
+++ b/packages/mason_cli/test/commands/bundle_test.dart
@@ -123,13 +123,13 @@ void main() {
         expect(
           actual,
           contains(
-            '''{"path":"post_gen.dart","data":"aW1wb3J0ICdkYXJ0OmlvJztpbXBvcnQgJ3BhY2thZ2U6bWFzb24vbWFzb24uZGFydCc7dm9pZCBydW4oSG9va0NvbnRleHQgY29udGV4dCl7ZmluYWwgZmlsZT1GaWxlKCcucG9zdF9nZW4udHh0Jyk7ZmlsZS53cml0ZUFzU3RyaW5nU3luYygncG9zdF9nZW46IHt7bmFtZX19Jyk7fQ==","type":"text"}''',
+            '''{"path":"post_gen.dart","data":"aW1wb3J0ICdkYXJ0OmlvJztpbXBvcnQgJ3BhY2thZ2U6bWFzb24vbWFzb24uZGFydCc7dm9pZCBydW4oSG9va0NvbnRleHQgY29udGV4dCl7ZmluYWwgZmlsZT1GaWxlKCcucG9zdF9nZW4udHh0Jyk7ZmlsZS53cml0ZUFzU3RyaW5nU3luYygncG9zdF9nZW46ICR7Y29udGV4dC52YXJzWyduYW1lJ119Jyk7fQ==","type":"text"}''',
           ),
         );
         expect(
           actual,
           contains(
-            '''{"path":"pre_gen.dart","data":"aW1wb3J0ICdkYXJ0OmlvJztpbXBvcnQgJ3BhY2thZ2U6bWFzb24vbWFzb24uZGFydCc7dm9pZCBydW4oSG9va0NvbnRleHQgY29udGV4dCl7ZmluYWwgZmlsZT1GaWxlKCcucHJlX2dlbi50eHQnKTtmaWxlLndyaXRlQXNTdHJpbmdTeW5jKCdwcmVfZ2VuOiB7e25hbWV9fScpO30=","type":"text"}''',
+            '''{"path":"pre_gen.dart","data":"aW1wb3J0ICdkYXJ0OmlvJztpbXBvcnQgJ3BhY2thZ2U6bWFzb24vbWFzb24uZGFydCc7dm9pZCBydW4oSG9va0NvbnRleHQgY29udGV4dCl7ZmluYWwgZmlsZT1GaWxlKCcucHJlX2dlbi50eHQnKTtmaWxlLndyaXRlQXNTdHJpbmdTeW5jKCdwcmVfZ2VuOiAke2NvbnRleHQudmFyc1snbmFtZSddfScpO30=","type":"text"}''',
           ),
         );
         expect(
@@ -250,13 +250,13 @@ void main() {
         expect(
           actual,
           contains(
-            '''{"path":"post_gen.dart","data":"aW1wb3J0ICdkYXJ0OmlvJztpbXBvcnQgJ3BhY2thZ2U6bWFzb24vbWFzb24uZGFydCc7dm9pZCBydW4oSG9va0NvbnRleHQgY29udGV4dCl7ZmluYWwgZmlsZT1GaWxlKCcucG9zdF9nZW4udHh0Jyk7ZmlsZS53cml0ZUFzU3RyaW5nU3luYygncG9zdF9nZW46IHt7bmFtZX19Jyk7fQ==","type":"text"}''',
+            '''{"path":"post_gen.dart","data":"aW1wb3J0ICdkYXJ0OmlvJztpbXBvcnQgJ3BhY2thZ2U6bWFzb24vbWFzb24uZGFydCc7dm9pZCBydW4oSG9va0NvbnRleHQgY29udGV4dCl7ZmluYWwgZmlsZT1GaWxlKCcucG9zdF9nZW4udHh0Jyk7ZmlsZS53cml0ZUFzU3RyaW5nU3luYygncG9zdF9nZW46ICR7Y29udGV4dC52YXJzWyduYW1lJ119Jyk7fQ==","type":"text"}''',
           ),
         );
         expect(
           actual,
           contains(
-            '''{"path":"pre_gen.dart","data":"aW1wb3J0ICdkYXJ0OmlvJztpbXBvcnQgJ3BhY2thZ2U6bWFzb24vbWFzb24uZGFydCc7dm9pZCBydW4oSG9va0NvbnRleHQgY29udGV4dCl7ZmluYWwgZmlsZT1GaWxlKCcucHJlX2dlbi50eHQnKTtmaWxlLndyaXRlQXNTdHJpbmdTeW5jKCdwcmVfZ2VuOiB7e25hbWV9fScpO30=","type":"text"}''',
+            '''{"path":"pre_gen.dart","data":"aW1wb3J0ICdkYXJ0OmlvJztpbXBvcnQgJ3BhY2thZ2U6bWFzb24vbWFzb24uZGFydCc7dm9pZCBydW4oSG9va0NvbnRleHQgY29udGV4dCl7ZmluYWwgZmlsZT1GaWxlKCcucHJlX2dlbi50eHQnKTtmaWxlLndyaXRlQXNTdHJpbmdTeW5jKCdwcmVfZ2VuOiAke2NvbnRleHQudmFyc1snbmFtZSddfScpO30=","type":"text"}''',
           ),
         );
         expect(