fix(core): create different dummy tasks for different targets (#28837)

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## Current Behavior
<!-- This is the behavior we have today -->

Task dependencies were getting conflated between different targets. If
nx runs lint tasks which depend on TaskA and test tasks which depend on
TaskB... the task graph was reporting that both lint and test tasks
depended on TaskA.. which is incorrect.

## Expected Behavior
<!-- This is the behavior we should expect with the changes in this PR
-->

Task dependencies are not conflated between different targets. If lint
tasks depend on TaskA and test tasks depend on TaskB.. then... lint
tasks will truly depend on TaskA and test tasks will truly depend on
TaskB properly.

## Related Issue(s)
<!-- Please link the issue being fixed so it gets closed when this is
merged. -->

Fixes #

Author: FrozenPandaz

packages/nx/src/tasks-runner/create-task-graph.spec.ts

@@ -1966,6 +1966,132 @@ describe('createTaskGraph', () => {
     });
   });
 
+  it('should not conflate dependencies of dummy tasks', () => {
+    projectGraph = {
+      nodes: {
+        app1: {
+          name: 'app1',
+          type: 'app',
+          data: {
+            root: 'app1-root',
+            targets: {
+              test: {
+                executor: 'nx:run-commands',
+                dependsOn: ['^dep2'],
+              },
+              lint: {
+                executor: 'nx:run-commands',
+                dependsOn: ['^dep'],
+              },
+            },
+          },
+        },
+        lib1: {
+          name: 'lib1',
+          type: 'app',
+          data: {
+            root: 'lib1-root',
+            targets: {},
+          },
+        },
+        lib2: {
+          name: 'lib2',
+          type: 'app',
+          data: {
+            root: 'lib2-root',
+            targets: {
+              dep: {
+                executor: 'nx:run-commands',
+              },
+              dep2: {
+                executor: 'nx:run-commands',
+              },
+            },
+          },
+        },
+      },
+      dependencies: {
+        app1: [{ source: 'app1', target: 'lib1', type: 'static' }],
+        lib1: [{ source: 'lib1', target: 'lib2', type: 'static' }],
+        lib2: [],
+      },
+    };
+
+    const taskGraph = createTaskGraph(
+      projectGraph,
+      {},
+      ['app1'],
+      ['lint', 'test'],
+      undefined,
+      {
+        __overrides_unparsed__: [],
+      }
+    );
+    expect(taskGraph).toEqual({
+      roots: ['lib2:dep', 'lib2:dep2'],
+      tasks: {
+        'app1:lint': {
+          id: 'app1:lint',
+          target: {
+            project: 'app1',
+            target: 'lint',
+          },
+          outputs: [],
+          overrides: {
+            __overrides_unparsed__: [],
+          },
+          projectRoot: 'app1-root',
+          parallelism: true,
+        },
+        'app1:test': {
+          id: 'app1:test',
+          target: {
+            project: 'app1',
+            target: 'test',
+          },
+          outputs: [],
+          overrides: {
+            __overrides_unparsed__: [],
+          },
+          projectRoot: 'app1-root',
+          parallelism: true,
+        },
+        'lib2:dep': {
+          id: 'lib2:dep',
+          target: {
+            project: 'lib2',
+            target: 'dep',
+          },
+          outputs: [],
+          overrides: {
+            __overrides_unparsed__: [],
+          },
+          projectRoot: 'lib2-root',
+          parallelism: true,
+        },
+        'lib2:dep2': {
+          id: 'lib2:dep2',
+          target: {
+            project: 'lib2',
+            target: 'dep2',
+          },
+          outputs: [],
+          overrides: {
+            __overrides_unparsed__: [],
+          },
+          projectRoot: 'lib2-root',
+          parallelism: true,
+        },
+      },
+      dependencies: {
+        'app1:lint': ['lib2:dep'],
+        'app1:test': ['lib2:dep2'],
+        'lib2:dep': [],
+        'lib2:dep2': [],
+      },
+    });
+  });
+
   it('should exclude task dependencies', () => {
     projectGraph = {
       nodes: {

packages/nx/src/tasks-runner/create-task-graph.ts

@@ -289,7 +289,7 @@ export class ProcessTasks {
       } else {
         const dummyId = this.getId(
           depProject.name,
-          DUMMY_TASK_TARGET,
+          task.target.target + DUMMY_TASK_TARGET,
           undefined
         );
         this.dependencies[task.id].push(dummyId);