diff --git a/.github/workflows/dart.yml b/.github/workflows/dart.yml
index 0e3b4708..037c7941 100644
--- a/.github/workflows/dart.yml
+++ b/.github/workflows/dart.yml
@@ -16,9 +16,35 @@ env:
 permissions: read-all
 
 jobs:
+  changedPackages:
+    name: Calculating affected packages
+    runs-on: ubuntu-latest
+    steps:
+      - id: filter
+        name: Produce variables based on which packages are affected
+        uses: dorny/paths-filter@v2
+        with:
+          filters: |
+            mono_repo:
+              - mono_repo/**
+            test_flutter_pkg:
+              - test_flutter_pkg/**
+            test_flutter_pkg_example:
+              - test_flutter_pkg/example/**
+              - test_flutter_pkg/**
+            test_pkg:
+              - test_pkg/**
+    outputs:
+      mono_repo: "${{ steps.filter.outputs.mono_repo }}"
+      test_flutter_pkg: "${{ steps.filter.outputs.test_flutter_pkg }}"
+      test_flutter_pkg_example: "${{ steps.filter.outputs.test_flutter_pkg_example }}"
+      test_pkg: "${{ steps.filter.outputs.test_pkg }}"
+    permissions:
+      pull-requests: read
   job_001:
     name: "smoke_test; linux; Dart 2.16.0; PKG: test_pkg; `dart format --output=none --set-exit-if-changed .`, `dart analyze --fatal-infos .`"
     runs-on: ubuntu-latest
+    if: "(contains(fromJSON('[\"push\", \"schedule\"]'), github.event_name) || needs.changedPackages.outputs.test_pkg == 'true')"
     steps:
       - name: Cache Pub hosted dependencies
         uses: actions/cache@88522ab9f39a2ea568f7027eddc7d8d8bc9d59c8
@@ -50,9 +76,12 @@ jobs:
         run: dart analyze --fatal-infos .
         if: "always() && steps.test_pkg_pub_upgrade.conclusion == 'success'"
         working-directory: test_pkg
+    needs:
+      - changedPackages
   job_002:
     name: "smoke_test; linux; Dart 2.17.0-69.1.beta; PKG: test_pkg; `dart format --output=none --set-exit-if-changed .`, `dart analyze --fatal-infos .`"
     runs-on: ubuntu-latest
+    if: "(contains(fromJSON('[\"push\", \"schedule\"]'), github.event_name) || needs.changedPackages.outputs.test_pkg == 'true')"
     steps:
       - name: Cache Pub hosted dependencies
         uses: actions/cache@88522ab9f39a2ea568f7027eddc7d8d8bc9d59c8
@@ -84,9 +113,12 @@ jobs:
         run: dart analyze --fatal-infos .
         if: "always() && steps.test_pkg_pub_upgrade.conclusion == 'success'"
         working-directory: test_pkg
+    needs:
+      - changedPackages
   job_003:
     name: "smoke_test; linux; Dart 2.18.0-106.0.dev; PKG: test_pkg; `dart format --output=none --set-exit-if-changed .`, `dart analyze --fatal-infos .`"
     runs-on: ubuntu-latest
+    if: "(contains(fromJSON('[\"push\", \"schedule\"]'), github.event_name) || needs.changedPackages.outputs.test_pkg == 'true')"
     steps:
       - name: Cache Pub hosted dependencies
         uses: actions/cache@88522ab9f39a2ea568f7027eddc7d8d8bc9d59c8
@@ -118,9 +150,12 @@ jobs:
         run: dart analyze --fatal-infos .
         if: "always() && steps.test_pkg_pub_upgrade.conclusion == 'success'"
         working-directory: test_pkg
+    needs:
+      - changedPackages
   job_004:
     name: "smoke_test; linux; Dart 2.18.0; PKG: mono_repo; `dart analyze`"
     runs-on: ubuntu-latest
+    if: "(contains(fromJSON('[\"push\", \"schedule\"]'), github.event_name) || needs.changedPackages.outputs.mono_repo == 'true')"
     steps:
       - name: Cache Pub hosted dependencies
         uses: actions/cache@88522ab9f39a2ea568f7027eddc7d8d8bc9d59c8
@@ -148,9 +183,12 @@ jobs:
         run: dart analyze
         if: "always() && steps.mono_repo_pub_upgrade.conclusion == 'success'"
         working-directory: mono_repo
+    needs:
+      - changedPackages
   job_005:
     name: "smoke_test; linux; Flutter beta; PKG: test_flutter_pkg; `dart format --output=none --set-exit-if-changed .`, `flutter analyze --fatal-infos .`"
     runs-on: ubuntu-latest
+    if: "(contains(fromJSON('[\"push\", \"schedule\"]'), github.event_name) || needs.changedPackages.outputs.test_flutter_pkg == 'true')"
     steps:
       - name: Cache Pub hosted dependencies
         uses: actions/cache@88522ab9f39a2ea568f7027eddc7d8d8bc9d59c8
@@ -182,9 +220,12 @@ jobs:
         run: flutter analyze --fatal-infos .
         if: "always() && steps.test_flutter_pkg_pub_upgrade.conclusion == 'success'"
         working-directory: test_flutter_pkg
+    needs:
+      - changedPackages
   job_006:
     name: "smoke_test; linux; Dart beta; PKG: test_pkg; `dart format --output=none --set-exit-if-changed .`, `dart analyze --fatal-infos .`"
     runs-on: ubuntu-latest
+    if: "(contains(fromJSON('[\"push\", \"schedule\"]'), github.event_name) || needs.changedPackages.outputs.test_pkg == 'true')"
     steps:
       - name: Cache Pub hosted dependencies
         uses: actions/cache@88522ab9f39a2ea568f7027eddc7d8d8bc9d59c8
@@ -216,9 +257,12 @@ jobs:
         run: dart analyze --fatal-infos .
         if: "always() && steps.test_pkg_pub_upgrade.conclusion == 'success'"
         working-directory: test_pkg
+    needs:
+      - changedPackages
   job_007:
     name: "smoke_test; linux; Dart dev; PKG: mono_repo; `cd ../ && dart mono_repo/bin/mono_repo.dart generate --validate`"
     runs-on: ubuntu-latest
+    if: "(contains(fromJSON('[\"push\", \"schedule\"]'), github.event_name) || needs.changedPackages.outputs.mono_repo == 'true')"
     steps:
       - name: Cache Pub hosted dependencies
         uses: actions/cache@88522ab9f39a2ea568f7027eddc7d8d8bc9d59c8
@@ -246,9 +290,12 @@ jobs:
         run: "cd ../ && dart mono_repo/bin/mono_repo.dart generate --validate"
         if: "always() && steps.mono_repo_pub_upgrade.conclusion == 'success'"
         working-directory: mono_repo
+    needs:
+      - changedPackages
   job_008:
     name: "smoke_test; linux; Dart dev; PKGS: mono_repo, test_pkg; `dart format --output=none --set-exit-if-changed .`, `dart analyze --fatal-infos .`"
     runs-on: ubuntu-latest
+    if: "(contains(fromJSON('[\"push\", \"schedule\"]'), github.event_name) || needs.changedPackages.outputs.mono_repo == 'true' || needs.changedPackages.outputs.test_pkg == 'true')"
     steps:
       - name: Cache Pub hosted dependencies
         uses: actions/cache@88522ab9f39a2ea568f7027eddc7d8d8bc9d59c8
@@ -293,9 +340,12 @@ jobs:
         run: dart analyze --fatal-infos .
         if: "always() && steps.test_pkg_pub_upgrade.conclusion == 'success'"
         working-directory: test_pkg
+    needs:
+      - changedPackages
   job_009:
     name: "smoke_test; linux; Dart main; PKG: test_pkg; `dart format --output=none --set-exit-if-changed .`, `dart analyze --fatal-infos .`"
     runs-on: ubuntu-latest
+    if: "(contains(fromJSON('[\"push\", \"schedule\"]'), github.event_name) || needs.changedPackages.outputs.test_pkg == 'true')"
     steps:
       - name: Cache Pub hosted dependencies
         uses: actions/cache@88522ab9f39a2ea568f7027eddc7d8d8bc9d59c8
@@ -327,9 +377,12 @@ jobs:
         run: dart analyze --fatal-infos .
         if: "always() && steps.test_pkg_pub_upgrade.conclusion == 'success'"
         working-directory: test_pkg
+    needs:
+      - changedPackages
   job_010:
     name: "smoke_test; linux; Flutter master; PKG: test_flutter_pkg; `dart format --output=none --set-exit-if-changed .`, `flutter analyze --fatal-infos .`"
     runs-on: ubuntu-latest
+    if: "(contains(fromJSON('[\"push\", \"schedule\"]'), github.event_name) || needs.changedPackages.outputs.test_flutter_pkg == 'true')"
     steps:
       - name: Cache Pub hosted dependencies
         uses: actions/cache@88522ab9f39a2ea568f7027eddc7d8d8bc9d59c8
@@ -361,9 +414,12 @@ jobs:
         run: flutter analyze --fatal-infos .
         if: "always() && steps.test_flutter_pkg_pub_upgrade.conclusion == 'success'"
         working-directory: test_flutter_pkg
+    needs:
+      - changedPackages
   job_011:
     name: "smoke_test; linux; Flutter stable; PKG: test_flutter_pkg; `dart format --output=none --set-exit-if-changed .`, `flutter analyze --fatal-infos .`"
     runs-on: ubuntu-latest
+    if: "(contains(fromJSON('[\"push\", \"schedule\"]'), github.event_name) || needs.changedPackages.outputs.test_flutter_pkg == 'true')"
     steps:
       - name: Cache Pub hosted dependencies
         uses: actions/cache@88522ab9f39a2ea568f7027eddc7d8d8bc9d59c8
@@ -395,9 +451,12 @@ jobs:
         run: flutter analyze --fatal-infos .
         if: "always() && steps.test_flutter_pkg_pub_upgrade.conclusion == 'success'"
         working-directory: test_flutter_pkg
+    needs:
+      - changedPackages
   job_012:
     name: "smoke_test; linux; Dart stable; PKG: test_pkg; `dart format --output=none --set-exit-if-changed .`, `dart analyze --fatal-infos .`"
     runs-on: ubuntu-latest
+    if: "(contains(fromJSON('[\"push\", \"schedule\"]'), github.event_name) || needs.changedPackages.outputs.test_pkg == 'true')"
     steps:
       - name: Cache Pub hosted dependencies
         uses: actions/cache@88522ab9f39a2ea568f7027eddc7d8d8bc9d59c8
@@ -429,9 +488,12 @@ jobs:
         run: dart analyze --fatal-infos .
         if: "always() && steps.test_pkg_pub_upgrade.conclusion == 'success'"
         working-directory: test_pkg
+    needs:
+      - changedPackages
   job_013:
     name: "test; linux; Dart 2.18.0; PKG: mono_repo; `dart test -x yaml -P presubmit --test-randomize-ordering-seed=random`"
     runs-on: ubuntu-latest
+    if: "(contains(fromJSON('[\"push\", \"schedule\"]'), github.event_name) || needs.changedPackages.outputs.mono_repo == 'true')"
     steps:
       - name: Cache Pub hosted dependencies
         uses: actions/cache@88522ab9f39a2ea568f7027eddc7d8d8bc9d59c8
@@ -460,6 +522,7 @@ jobs:
         if: "always() && steps.mono_repo_pub_upgrade.conclusion == 'success'"
         working-directory: mono_repo
     needs:
+      - changedPackages
       - job_001
       - job_002
       - job_003
@@ -475,6 +538,7 @@ jobs:
   job_014:
     name: "test; linux; Flutter beta; PKG: test_flutter_pkg; `flutter test --test-randomize-ordering-seed=random`"
     runs-on: ubuntu-latest
+    if: "(contains(fromJSON('[\"push\", \"schedule\"]'), github.event_name) || needs.changedPackages.outputs.test_flutter_pkg == 'true')"
     steps:
       - name: Cache Pub hosted dependencies
         uses: actions/cache@88522ab9f39a2ea568f7027eddc7d8d8bc9d59c8
@@ -503,6 +567,7 @@ jobs:
         if: "always() && steps.test_flutter_pkg_pub_upgrade.conclusion == 'success'"
         working-directory: test_flutter_pkg
     needs:
+      - changedPackages
       - job_001
       - job_002
       - job_003
@@ -518,6 +583,7 @@ jobs:
   job_015:
     name: "test; linux; Dart dev; PKG: mono_repo; `dart pub global run coverage:test_with_coverage -- -t yaml --test-randomize-ordering-seed=random`"
     runs-on: ubuntu-latest
+    if: "(contains(fromJSON('[\"push\", \"schedule\"]'), github.event_name) || needs.changedPackages.outputs.mono_repo == 'true')"
     steps:
       - name: Cache Pub hosted dependencies
         uses: actions/cache@88522ab9f39a2ea568f7027eddc7d8d8bc9d59c8
@@ -561,6 +627,7 @@ jobs:
           fail_ci_if_error: true
           name: coverage_00
     needs:
+      - changedPackages
       - job_001
       - job_002
       - job_003
@@ -576,6 +643,7 @@ jobs:
   job_016:
     name: "test; linux; Dart dev; PKG: mono_repo; `dart pub global run coverage:test_with_coverage -- -x yaml -P presubmit --test-randomize-ordering-seed=random`"
     runs-on: ubuntu-latest
+    if: "(contains(fromJSON('[\"push\", \"schedule\"]'), github.event_name) || needs.changedPackages.outputs.mono_repo == 'true')"
     steps:
       - name: Cache Pub hosted dependencies
         uses: actions/cache@88522ab9f39a2ea568f7027eddc7d8d8bc9d59c8
@@ -619,6 +687,7 @@ jobs:
           fail_ci_if_error: true
           name: coverage_01
     needs:
+      - changedPackages
       - job_001
       - job_002
       - job_003
@@ -634,6 +703,7 @@ jobs:
   job_017:
     name: "test; linux; Dart dev; PKG: mono_repo; `dart test -t yaml --test-randomize-ordering-seed=random`"
     runs-on: ubuntu-latest
+    if: "(contains(fromJSON('[\"push\", \"schedule\"]'), github.event_name) || needs.changedPackages.outputs.mono_repo == 'true')"
     steps:
       - name: Cache Pub hosted dependencies
         uses: actions/cache@88522ab9f39a2ea568f7027eddc7d8d8bc9d59c8
@@ -662,6 +732,7 @@ jobs:
         if: "always() && steps.mono_repo_pub_upgrade.conclusion == 'success'"
         working-directory: mono_repo
     needs:
+      - changedPackages
       - job_001
       - job_002
       - job_003
@@ -677,6 +748,7 @@ jobs:
   job_018:
     name: "test; linux; Dart dev; PKG: test_pkg; `dart pub global run coverage:test_with_coverage -- --test-randomize-ordering-seed=random`"
     runs-on: ubuntu-latest
+    if: "(contains(fromJSON('[\"push\", \"schedule\"]'), github.event_name) || needs.changedPackages.outputs.test_pkg == 'true')"
     steps:
       - name: Cache Pub hosted dependencies
         uses: actions/cache@88522ab9f39a2ea568f7027eddc7d8d8bc9d59c8
@@ -720,6 +792,7 @@ jobs:
           fail_ci_if_error: true
           name: coverage_02
     needs:
+      - changedPackages
       - job_001
       - job_002
       - job_003
@@ -735,6 +808,7 @@ jobs:
   job_019:
     name: "test; linux; Flutter stable; PKG: test_flutter_pkg/example; `flutter test --test-randomize-ordering-seed=random`"
     runs-on: ubuntu-latest
+    if: "(contains(fromJSON('[\"push\", \"schedule\"]'), github.event_name) || needs.changedPackages.outputs.test_flutter_pkg_example == 'true')"
     steps:
       - name: Cache Pub hosted dependencies
         uses: actions/cache@88522ab9f39a2ea568f7027eddc7d8d8bc9d59c8
@@ -763,6 +837,7 @@ jobs:
         if: "always() && steps.test_flutter_pkg_example_pub_upgrade.conclusion == 'success'"
         working-directory: test_flutter_pkg/example
     needs:
+      - changedPackages
       - job_001
       - job_002
       - job_003
@@ -778,6 +853,7 @@ jobs:
   job_020:
     name: "test; windows; Dart 2.18.0; PKG: mono_repo; `dart test -x yaml -P presubmit --test-randomize-ordering-seed=random`"
     runs-on: windows-latest
+    if: "(contains(fromJSON('[\"push\", \"schedule\"]'), github.event_name) || needs.changedPackages.outputs.mono_repo == 'true')"
     steps:
       - name: Setup Dart SDK
         uses: dart-lang/setup-dart@d6a63dab3335f427404425de0fbfed4686d93c4f
@@ -796,6 +872,7 @@ jobs:
         if: "always() && steps.mono_repo_pub_upgrade.conclusion == 'success'"
         working-directory: mono_repo
     needs:
+      - changedPackages
       - job_001
       - job_002
       - job_003
@@ -811,6 +888,7 @@ jobs:
   job_021:
     name: "test; windows; Dart dev; PKG: mono_repo; `dart test -x yaml -P presubmit --test-randomize-ordering-seed=random`"
     runs-on: windows-latest
+    if: "(contains(fromJSON('[\"push\", \"schedule\"]'), github.event_name) || needs.changedPackages.outputs.mono_repo == 'true')"
     steps:
       - name: Setup Dart SDK
         uses: dart-lang/setup-dart@d6a63dab3335f427404425de0fbfed4686d93c4f
@@ -829,6 +907,7 @@ jobs:
         if: "always() && steps.mono_repo_pub_upgrade.conclusion == 'success'"
         working-directory: mono_repo
     needs:
+      - changedPackages
       - job_001
       - job_002
       - job_003
@@ -853,6 +932,7 @@ jobs:
         env:
           CHAT_WEBHOOK_URL: "${{ secrets.CHAT_WEBHOOK_URL }}"
     needs:
+      - changedPackages
       - job_001
       - job_002
       - job_003
@@ -874,7 +954,7 @@ jobs:
       - job_019
       - job_020
       - job_021
-  job_23:
+  job_24:
     name: Mark Coveralls job finished
     runs-on: ubuntu-latest
     steps:
diff --git a/mono_repo.yaml b/mono_repo.yaml
index b116e0d3..242b6687 100644
--- a/mono_repo.yaml
+++ b/mono_repo.yaml
@@ -6,6 +6,8 @@ coverage_service:
 - coveralls
 - codecov
 
+smart_jobs: true
+
 github:
   # Setting just `cron` keeps the defaults for `push` and `pull_request`
   cron: '0 0 * * 0' # “At 00:00 (UTC) on Sunday.”
diff --git a/mono_repo/lib/src/ci_shared.dart b/mono_repo/lib/src/ci_shared.dart
index 968d70c6..34b68e91 100644
--- a/mono_repo/lib/src/ci_shared.dart
+++ b/mono_repo/lib/src/ci_shared.dart
@@ -32,6 +32,7 @@ String get createdWith => '# Created with package:mono_repo v$_pkgVersion';
 
 String get _pkgVersion => _isTesting ? '1.2.3' : packageVersion;
 
+const calculateChangesJobName = 'Calculating affected packages';
 const selfValidateJobName = 'mono_repo self validate';
 
 final selfValidateCommands = [
diff --git a/mono_repo/lib/src/commands/github/action_info.dart b/mono_repo/lib/src/commands/github/action_info.dart
index 663eba00..acf5fd05 100644
--- a/mono_repo/lib/src/commands/github/action_info.dart
+++ b/mono_repo/lib/src/commands/github/action_info.dart
@@ -38,6 +38,13 @@ enum ActionInfo implements Comparable<ActionInfo> {
     name: 'Upload coverage to codecov.io',
     repo: 'codecov/codecov-action',
     version: codecovCodecovActionVersion,
+  ),
+
+  /// See https://github.com/marketplace/actions/paths-changes-filter
+  pathsFilter(
+    name: 'Produce variables based on which packages are affected',
+    repo: 'dorny/paths-filter',
+    version: dornyPathsFilterVersion,
   );
 
   const ActionInfo({
diff --git a/mono_repo/lib/src/commands/github/action_versions.dart b/mono_repo/lib/src/commands/github/action_versions.dart
index a0fdde49..4bce7a01 100644
--- a/mono_repo/lib/src/commands/github/action_versions.dart
+++ b/mono_repo/lib/src/commands/github/action_versions.dart
@@ -12,3 +12,4 @@ const actionsCheckoutVersion = '8e5e7e5ab8b370d6c329ec480221332ada57f0ab';
 const subositoFlutterActionVersion = '48cafc24713cca54bbe03cdc3a423187d413aafa';
 const coverallsappGithubActionVersion = 'master';
 const codecovCodecovActionVersion = 'main';
+const dornyPathsFilterVersion = 'v2';
diff --git a/mono_repo/lib/src/commands/github/github_yaml.dart b/mono_repo/lib/src/commands/github/github_yaml.dart
index bd75b458..8f7bd090 100644
--- a/mono_repo/lib/src/commands/github/github_yaml.dart
+++ b/mono_repo/lib/src/commands/github/github_yaml.dart
@@ -18,6 +18,7 @@ import 'action_info.dart';
 import 'job.dart';
 import 'step.dart';
 
+const _calculateChangesJobId = 'changedPackages';
 const _onCompletionStage = '_on_completion';
 
 const githubWorkflowDirectory = '.github/workflows';
@@ -38,6 +39,10 @@ Map<String, String> generateGitHubYml(RootConfig rootConfig) {
     jobs.add(_SelfValidateJob(selfValidateStage));
   }
 
+  if (rootConfig.monoConfig.smartJobs == true) {
+    jobs.add(const _CalculateChangesJob());
+  }
+
   final allJobStages = {for (var job in jobs) job.stageName};
   final orderedStages = calculateOrderedStages(
     rootConfig,
@@ -64,10 +69,13 @@ Map<String, String> generateGitHubYml(RootConfig rootConfig) {
             .compareTo(orderedStages.indexOf(b.stageName));
 
         if (value == 0) {
-          if (a is _SelfValidateJob) {
+          if (a is _CalculateChangesJob) {
             value = -1;
-          }
-          if (b is _SelfValidateJob) {
+          } else if (b is _CalculateChangesJob) {
+            value = 1;
+          } else if (a is _SelfValidateJob) {
+            value = -1;
+          } else if (b is _SelfValidateJob) {
             value = 1;
           }
         }
@@ -105,7 +113,7 @@ Map<String, String> generateGitHubYml(RootConfig rootConfig) {
       }
       currStageJobs.add(job.id);
       if (allPrevStageJobs.isNotEmpty) {
-        job.value.needs = allPrevStageJobs.toList();
+        (job.value.needs ??= []).addAll(allPrevStageJobs);
       }
 
       // process post-run logic
@@ -122,8 +130,8 @@ Map<String, String> generateGitHubYml(RootConfig rootConfig) {
         Map.fromEntries(allJobs.map((e) => MapEntry(e.id, e.value)));
 
     for (var completion in completionMap.entries) {
-      final job = completion.key.completionJobFactory!(rootConfig)
-        ..needs = completion.value.toList();
+      final job = completion.key.completionJobFactory!(rootConfig);
+      (job.needs ??= []).addAll(completion.value);
 
       jobList['job_${jobList.length + 1}'] = job;
     }
@@ -190,13 +198,15 @@ Iterable<_MapEntryWithStage> _listJobs(
 
   String jobName(int jobNum) => 'job_${jobNum.toString().padLeft(3, '0')}';
 
-  _MapEntryWithStage jobEntry(Job content, String stage) {
+  _MapEntryWithStage jobEntry(Job content, String stage, {String? id}) {
     final conditional = conditionalStages[stage];
-    if (conditional != null) {
-      content.ifContent = conditional.ifCondition;
+    if (conditional != null && conditional.ifCondition != null) {
+      content.ifContent =
+          (content.ifContent == null ? '' : '${content.ifContent} && ') +
+              conditional.ifCondition!;
     }
     return _MapEntryWithStage(
-      jobName(++count),
+      id ?? jobName(++count),
       content,
       stage,
     );
@@ -205,11 +215,19 @@ Iterable<_MapEntryWithStage> _listJobs(
   for (var job in jobs) {
     if (job is _SelfValidateJob) {
       yield jobEntry(
-        _selfValidateJob(rootConfig.monoConfig, rootConfig),
+        job.job(rootConfig.monoConfig, rootConfig),
         job.stageName,
       );
       continue;
     }
+    if (job is _CalculateChangesJob) {
+      yield jobEntry(
+        job.job(rootConfig.monoConfig, rootConfig),
+        job.stageName,
+        id: _calculateChangesJobId,
+      );
+      continue;
+    }
 
     final ciJob = job as CIJob;
 
@@ -349,6 +367,14 @@ extension on CIJobEntry {
         'packages': packages.join('-'),
         'commands': commands.join('-'),
       },
+      packages: packages
+          .map(
+            (path) => rootConfig
+                .singleWhere((pkg) => pkg.relativePath == path)
+                .pubspec
+                .name,
+          )
+          .toList(),
     );
   }
 
@@ -390,30 +416,48 @@ Job _githubJob(
   RootConfig rootConfig, {
   required BasicConfiguration config,
   Map<String, String>? additionalCacheKeys,
-}) =>
-    Job(
-      name: jobName,
-      runsOn: runsOn,
-      steps: [
-        if (!runsOn.startsWith('windows'))
-          _cacheEntries(
-            runsOn,
-            rootConfig: rootConfig,
-            additionalCacheKeys: {
-              'sdk': sdkVersion,
-              if (additionalCacheKeys != null) ...additionalCacheKeys,
-            },
-          ),
-        packageFlavor.setupStep(sdkVersion, rootConfig),
-        ..._beforeSteps(runCommands.whereType<_CommandEntry>()),
-        ActionInfo.checkout.usage(
-          id: 'checkout',
-          versionOverrides: rootConfig.existingActionVersions,
-        ),
-        for (var command in runCommands)
-          ...command.runContent(config, rootConfig),
-      ],
+  // Used for "smart jobs" configuration, only applies for packages.
+  List<String>? packages,
+}) {
+  StringBuffer? ifContent;
+  if (rootConfig.monoConfig.smartJobs &&
+      packages != null &&
+      packages.isNotEmpty) {
+    ifContent = StringBuffer(
+      '(contains(fromJSON(\'["push", "schedule"]\'), github.event_name)',
     );
+    for (var package in packages) {
+      ifContent.write(
+        ' || needs.$_calculateChangesJobId.outputs.$package == \'true\'',
+      );
+    }
+    ifContent.write(')');
+  }
+  return Job(
+    name: jobName,
+    runsOn: runsOn,
+    ifContent: ifContent?.toString(),
+    steps: [
+      if (!runsOn.startsWith('windows'))
+        _cacheEntries(
+          runsOn,
+          rootConfig: rootConfig,
+          additionalCacheKeys: {
+            'sdk': sdkVersion,
+            if (additionalCacheKeys != null) ...additionalCacheKeys,
+          },
+        ),
+      packageFlavor.setupStep(sdkVersion, rootConfig),
+      ..._beforeSteps(runCommands.whereType<_CommandEntry>()),
+      ActionInfo.checkout.usage(
+        id: 'checkout',
+        versionOverrides: rootConfig.existingActionVersions,
+      ),
+      for (var command in runCommands)
+        ...command.runContent(config, rootConfig),
+    ],
+  );
+}
 
 Set<TaskType> _orderedTypes(Iterable<_CommandEntry> commands) =>
     SplayTreeSet.of(commands.map((e) => e.type).whereType<TaskType>());
@@ -511,20 +555,6 @@ String _maxLength(String input) {
   return input.substring(0, 512 - hash.length) + hash;
 }
 
-Job _selfValidateJob(BasicConfiguration config, RootConfig rootConfig) =>
-    _githubJob(
-      selfValidateJobName,
-      _ubuntuLatest,
-      PackageFlavor.dart,
-      'stable',
-      [
-        for (var command in selfValidateCommands)
-          _CommandEntryBase(selfValidateJobName, command),
-      ],
-      rootConfig,
-      config: config,
-    );
-
 const _ubuntuLatest = 'ubuntu-latest';
 
 /// Used as a place-holder so we can treat all jobs the same in certain
@@ -534,6 +564,58 @@ class _SelfValidateJob implements HasStageName {
   final String stageName;
 
   _SelfValidateJob(this.stageName);
+
+  Job job(BasicConfiguration config, RootConfig rootConfig) => _githubJob(
+        selfValidateJobName,
+        _ubuntuLatest,
+        PackageFlavor.dart,
+        'stable',
+        [
+          for (var command in selfValidateCommands)
+            _CommandEntryBase(selfValidateJobName, command),
+        ],
+        rootConfig,
+        config: config,
+      );
+}
+
+/// Used a place-holder, actual job is created later.
+class _CalculateChangesJob implements HasStageName {
+  const _CalculateChangesJob();
+
+  @override
+  // This should always go before any other stages.
+  String get stageName => '';
+
+  Job job(BasicConfiguration config, RootConfig rootConfig) {
+    final outputs = {
+      for (var package in rootConfig)
+        package.pubspec.name:
+            '\${{ steps.filter.outputs.${package.pubspec.name} }}',
+    };
+    return Job(
+      name: calculateChangesJobName,
+      runsOn: _ubuntuLatest,
+      outputs: outputs,
+      permissions: {'pull-requests': 'read'},
+      steps: [
+        ActionInfo.pathsFilter.usage(
+          id: 'filter',
+          versionOverrides: rootConfig.existingActionVersions,
+          withContent: {
+            'filters': [
+              for (var package in rootConfig) ...[
+                '${package.pubspec.name}:',
+                '  - ${package.relativePath}/**',
+                for (var dependencyPath in package.pathDependencies)
+                  '  - $dependencyPath/**',
+              ]
+            ].join('\n'),
+          },
+        ),
+      ],
+    );
+  }
 }
 
 class _MapEntryWithStage {
diff --git a/mono_repo/lib/src/commands/github/job.dart b/mono_repo/lib/src/commands/github/job.dart
index 911b9e56..49b811ec 100644
--- a/mono_repo/lib/src/commands/github/job.dart
+++ b/mono_repo/lib/src/commands/github/job.dart
@@ -18,16 +18,27 @@ class Job implements YamlLike {
 
   @JsonKey(name: 'runs-on')
   final String? runsOn;
+
   @JsonKey(name: 'if')
   String? ifContent;
+
   @JsonKey(required: true)
   final List<Step> steps;
+
   List<String>? needs;
 
+  Map<String, String>? outputs;
+
+  Map<String, String>? permissions;
+
   Job({
     this.name,
     this.runsOn,
     required this.steps,
+    this.ifContent,
+    this.needs,
+    this.outputs,
+    this.permissions,
   });
 
   factory Job.fromJson(Map json) => _$JobFromJson(json);
diff --git a/mono_repo/lib/src/commands/github/job.g.dart b/mono_repo/lib/src/commands/github/job.g.dart
index 5998e982..2fd71130 100644
--- a/mono_repo/lib/src/commands/github/job.g.dart
+++ b/mono_repo/lib/src/commands/github/job.g.dart
@@ -24,12 +24,20 @@ Job _$JobFromJson(Map json) => $checkedCreate(
               (v) => (v as List<dynamic>)
                   .map((e) => Step.fromJson(e as Map))
                   .toList()),
+          ifContent: $checkedConvert('if', (v) => v as String?),
+          needs: $checkedConvert('needs',
+              (v) => (v as List<dynamic>?)?.map((e) => e as String).toList()),
+          outputs: $checkedConvert(
+              'outputs',
+              (v) => (v as Map?)?.map(
+                    (k, e) => MapEntry(k as String, e as String),
+                  )),
+          permissions: $checkedConvert(
+              'permissions',
+              (v) => (v as Map?)?.map(
+                    (k, e) => MapEntry(k as String, e as String),
+                  )),
         );
-        $checkedConvert('if', (v) => val.ifContent = v as String?);
-        $checkedConvert(
-            'needs',
-            (v) => val.needs =
-                (v as List<dynamic>?)?.map((e) => e as String).toList());
         return val;
       },
       fieldKeyMap: const {'runsOn': 'runs-on', 'ifContent': 'if'},
@@ -49,5 +57,7 @@ Map<String, dynamic> _$JobToJson(Job instance) {
   writeNotNull('if', instance.ifContent);
   val['steps'] = instance.steps.map((e) => e.toJson()).toList();
   writeNotNull('needs', instance.needs);
+  writeNotNull('outputs', instance.outputs);
+  writeNotNull('permissions', instance.permissions);
   return val;
 }
diff --git a/mono_repo/lib/src/mono_config.dart b/mono_repo/lib/src/mono_config.dart
index 8067465c..2d3f3f3d 100644
--- a/mono_repo/lib/src/mono_config.dart
+++ b/mono_repo/lib/src/mono_config.dart
@@ -21,6 +21,7 @@ const _allowedMonoConfigKeys = {
   'pub_action',
   'self_validate',
   'coverage_service',
+  'smart_jobs',
 };
 
 const _defaultPubAction = 'upgrade';
@@ -37,6 +38,7 @@ class MonoConfig implements BasicConfiguration {
   final String pubAction;
   final String? selfValidateStage;
   final GitHubConfig github;
+  final bool smartJobs;
   @override
   final Set<CoverageProcessor> coverageProcessors;
 
@@ -47,6 +49,7 @@ class MonoConfig implements BasicConfiguration {
     required this.selfValidateStage,
     required Map github,
     required this.coverageProcessors,
+    required this.smartJobs,
   })  : githubConditionalStages = _readConditionalStages(github),
         github = GitHubConfig.fromJson(github);
 
@@ -126,6 +129,16 @@ class MonoConfig implements BasicConfiguration {
 
     final coverageServices = _asList(json, 'coverage_service');
 
+    final smartJobs = json['smart_jobs'] ?? false;
+    if (smartJobs is! bool) {
+      throw CheckedFromJsonException(
+        json,
+        'smart_jobs',
+        'MonoConfig',
+        'Value must be `true` or `false`.',
+      );
+    }
+
     return MonoConfig._(
       mergeStages: Set.from(mergeStages),
       prettyAnsi: prettyAnsi,
@@ -135,6 +148,7 @@ class MonoConfig implements BasicConfiguration {
       coverageProcessors: coverageServices
           .map((e) => CoverageProcessor.values.byName(e))
           .toSet(),
+      smartJobs: smartJobs,
     );
   }
 
@@ -150,6 +164,7 @@ class MonoConfig implements BasicConfiguration {
         selfValidateStage: null,
         github: {},
         coverageProcessors: {CoverageProcessor.coveralls},
+        smartJobs: false,
       );
     }
 
diff --git a/mono_repo/lib/src/package_config.dart b/mono_repo/lib/src/package_config.dart
index 867e611d..9c078243 100644
--- a/mono_repo/lib/src/package_config.dart
+++ b/mono_repo/lib/src/package_config.dart
@@ -5,6 +5,7 @@
 import 'package:checked_yaml/checked_yaml.dart';
 import 'package:io/ansi.dart';
 import 'package:json_annotation/json_annotation.dart';
+import 'package:path/path.dart' as p;
 import 'package:pub_semver/pub_semver.dart';
 import 'package:pubspec_parse/pubspec_parse.dart';
 import 'package:yaml/yaml.dart';
@@ -22,23 +23,27 @@ const monoPkgFileName = 'mono_pkg.yaml';
 class PackageConfig {
   final String relativePath;
   final Pubspec pubspec;
+  final Pubspec? pubspecOverrides;
 
   final List<String> oses;
   final List<String>? sdks;
   final List<String> stageNames;
   final List<CIJob> jobs;
   final List<String> cacheDirectories;
+  final List<String> pathDependencies;
   final bool dartSdkConfigUsed;
   final bool osConfigUsed;
 
   PackageConfig(
     this.relativePath,
     this.pubspec,
+    this.pubspecOverrides,
     this.oses,
     this.sdks,
     this.stageNames,
     this.jobs,
     this.cacheDirectories,
+    this.pathDependencies,
     this.dartSdkConfigUsed,
     this.osConfigUsed,
   ) : assert(() {
@@ -54,15 +59,22 @@ class PackageConfig {
   factory PackageConfig.parse(
     String relativePath,
     Pubspec pubspec,
+    Pubspec? pubspecOverrides,
     Map monoPkgYaml,
   ) =>
       createWithCheck(
-        () => PackageConfig._parse(relativePath, pubspec, monoPkgYaml),
+        () => PackageConfig._parse(
+          relativePath,
+          pubspec,
+          pubspecOverrides,
+          monoPkgYaml,
+        ),
       );
 
   factory PackageConfig._parse(
     String relativePath,
     Pubspec pubspec,
+    Pubspec? pubspecOverrides,
     Map monoPkgYaml,
   ) {
     if (monoPkgYaml.isEmpty) {
@@ -71,6 +83,8 @@ class PackageConfig {
       return PackageConfig(
         relativePath,
         pubspec,
+        pubspecOverrides,
+        [],
         [],
         [],
         [],
@@ -178,14 +192,27 @@ class PackageConfig {
       return stage.name;
     }).toList();
 
+    final deps = {
+      ...pubspec.dependencies,
+      if (pubspecOverrides != null) ...pubspecOverrides.dependencies,
+      ...pubspec.dependencyOverrides,
+      if (pubspecOverrides != null) ...pubspecOverrides.dependencyOverrides,
+    };
+    final pathDependencies = [
+      for (final dep in deps.values)
+        if (dep is PathDependency) p.normalize(p.join(relativePath, dep.path)),
+    ];
+
     return PackageConfig(
       relativePath,
       pubspec,
+      pubspecOverrides,
       rawConfig.oses,
       rawConfig.sdks,
       stageNames,
       jobs,
       rawConfig.cache?.directories ?? const [],
+      pathDependencies,
       sdkConfigUsed,
       osConfigUsed,
     );
diff --git a/mono_repo/lib/src/root_config.dart b/mono_repo/lib/src/root_config.dart
index e35d3629..bd50872d 100644
--- a/mono_repo/lib/src/root_config.dart
+++ b/mono_repo/lib/src/root_config.dart
@@ -18,6 +18,7 @@ import 'yaml.dart';
 
 const _legacyPkgConfigFileName = '.mono_repo.yml';
 const _pubspecFileName = 'pubspec.yaml';
+const _pubspecOverridesFileName = 'pubspec_overrides.yaml';
 
 PackageConfig? _packageConfigFromDir(
   String rootDirectory,
@@ -56,7 +57,22 @@ PackageConfig? _packageConfigFromDir(
     sourceUrl: Uri.parse(pubspecFile.path),
   );
 
-  return PackageConfig.parse(pkgRelativePath, pubspec, pkgConfigYaml);
+  Pubspec? pubspecOverrides;
+  final pubspecOverridesFile =
+      File(p.join(rootDirectory, pkgRelativePath, _pubspecOverridesFileName));
+  if (pubspecOverridesFile.existsSync()) {
+    pubspecOverrides = Pubspec.parse(
+      pubspecOverridesFile.readAsStringSync(),
+      sourceUrl: Uri.parse(pubspecOverridesFile.path),
+    );
+  }
+
+  return PackageConfig.parse(
+    pkgRelativePath,
+    pubspec,
+    pubspecOverrides,
+    pkgConfigYaml,
+  );
 }
 
 class RootConfig extends ListBase<PackageConfig> {
diff --git a/mono_repo/test/mono_config_test.dart b/mono_repo/test/mono_config_test.dart
index 9953f3e1..28557ab0 100644
--- a/mono_repo/test/mono_config_test.dart
+++ b/mono_repo/test/mono_config_test.dart
@@ -21,6 +21,7 @@ String _encodeJson(Object? input) =>
 PackageConfig _parse(map) => PackageConfig.parse(
       'a',
       _dummyPubspec,
+      null,
       map is YamlMap
           ? map
           : loadYamlChecked(
diff --git a/test_flutter_pkg/pubspec.yaml b/test_flutter_pkg/pubspec.yaml
index 442e5d75..a2a2409d 100644
--- a/test_flutter_pkg/pubspec.yaml
+++ b/test_flutter_pkg/pubspec.yaml
@@ -1,5 +1,5 @@
 name: test_flutter_pkg
-description: A new Flutter project.
+description: A new Flutter project!!.
 
 # The following line prevents the package from being accidentally published to
 # pub.dev using `flutter pub publish`. This is preferred for private packages.