fix(core): cross-workspace implicitDependencies should be safely ignored (#28845)

e2e/nx/src/misc.test.ts

@@ -767,3 +767,45 @@ describe('global installation', () => {
     });
   });
 });
+
+describe('cross-workspace implicit dependencies', () => {
+  beforeAll(() =>
+    newProject({
+      packages: ['@nx/js'],
+    })
+  );
+
+  afterAll(() => cleanupProject());
+
+  it('should successfully build a project graph when cross-workspace implicit dependencies are present', () => {
+    const npmPackage = uniq('npm-package');
+    runCLI(`generate @nx/workspace:npm-package ${npmPackage}`);
+
+    function setImplicitDependencies(deps: string[]) {
+      updateFile(join(npmPackage, 'package.json'), (content) => {
+        const json = JSON.parse(content);
+        json.nx = {
+          ...json.nx,
+          implicitDependencies: deps,
+        };
+        return JSON.stringify(json, null, 2);
+      });
+    }
+
+    // First set the implicit dependencies to an intentionally invalid value to prove the command fails during project graph construction
+    setImplicitDependencies(['this-project-does-not-exist']);
+    expect(
+      runCLI(`test ${npmPackage}`, {
+        silenceError: true,
+      })
+    ).toContain('Failed to process project graph');
+
+    // Now set the implicit dependencies to a cross-workspace reference to prove that it is valid, despite not being resolvable in the current workspace
+    setImplicitDependencies(['nx-cloud:another-workspace']);
+    expect(
+      runCLI(`test ${npmPackage}`, {
+        silenceError: true,
+      })
+    ).toContain('Successfully ran target test');
+  });
+});

packages/nx/src/utils/assert-workspace-validity.ts

@@ -114,7 +114,10 @@ function detectAndSetInvalidProjectGlobValues(
     const projectName = implicit.startsWith('!')
       ? implicit.substring(1)
       : implicit;
-
+    // Do not error on cross-workspace implicit dependency references
+    if (projectName.startsWith('nx-cloud:')) {
+      return false;
+    }
     return !(
       projectConfigurations[projectName] ||
       findMatchingProjects([implicit], projects).length

packages/nx/src/utils/find-matching-projects.ts

@@ -49,7 +49,8 @@ export function findMatchingProjects(
   }
 
   for (const stringPattern of patterns) {
-    if (!stringPattern.length) {
+    // Do not waste time attempting to look up cross-workspace references which will never match
+    if (!stringPattern.length || stringPattern.startsWith('nx-cloud:')) {
       continue;
     }