Fine tune dependency analysis, add CI workflow

.github/workflows/quality.yml

@@ -117,6 +117,8 @@ jobs:
             ${{ runner.os }}-gradle-
       - name: Lint analysis
         run: ./gradlew clean :vector:lint --stacktrace
+      - name: Dependency analysis
+        run: ./gradlew buildHealth
       - name: Upload reports
         if: always()
         uses: actions/upload-artifact@v3
@@ -124,6 +126,12 @@ jobs:
           name: lint-report
           path: |
             vector/build/reports/*.*
+      - name: Upload dependency analysis
+        if: always()
+        uses: actions/upload-artifact@v3
+        with:
+          name: dependency-analysis
+          path: build/reports/dependency-analysis/build-health-report.txt
 
 # Lint for Gplay and Fdroid release APK
   apk-lint:

build.gradle

@@ -234,7 +234,38 @@ dependencyAnalysis {
     }
     issues {
         all {
-            ignoreKtx(true) // default is false
+            ignoreKtx(true)
+            onUsedTransitiveDependencies {
+                // Transitively used dependencies that should be declared directly
+                severity("ignore")
+            }
+            onUnusedDependencies {
+                severity("fail")
+            }
+            onUnusedAnnotationProcessors {
+                severity("fail")
+                exclude("com.airbnb.android:epoxy-processor", "com.google.dagger:hilt-compiler") // False positives
+            }
+        }
+        project(":library:jsonviewer") {
+            onUnusedDependencies {
+                exclude("org.json:json") // Used in unit tests, overwrites the one bundled into Android
+            }
+        }
+        project(":library:ui-styles") {
+            onUnusedDependencies {
+                exclude("com.github.vector-im:PFLockScreen-Android") // False positive
+            }
+        }
+        project(":matrix-sdk-android") {
+            onUnusedDependencies {
+                exclude("io.reactivex.rxjava2:rxkotlin") // Transitively required for mocking realm as monarchy doesn't expose Rx
+            }
+        }
+        project(":matrix-sdk-android-flow") {
+            onUnusedDependencies {
+                exclude("androidx.paging:paging-runtime-ktx") // False positive
+            }
         }
     }
 }