[Gradle] Fix cocoapods' cinterops UTD

^KT-60112 Verification Pending

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/native/CocoaPodsIT.kt

@@ -250,6 +250,30 @@ class CocoaPodsIT : KGPBaseTest() {
         }
     }
 
+    @DisplayName("cinterops UTD after pod change")
+    @GradleTest
+    fun testCinteropsUTDAfterPodChange(gradleVersion: GradleVersion) {
+        nativeProjectWithCocoapodsAndIosAppPodFile(gradleVersion = gradleVersion) {
+
+            val podDeclaration = """pod("Base64", version = "1.0.1")"""
+            buildGradleKts.addCocoapodsBlock(podDeclaration)
+
+            buildWithCocoapodsWrapper(podImportTaskName) {
+                assertTasksExecuted(":cinteropBase64IOS")
+            }
+
+            buildWithCocoapodsWrapper(podImportTaskName) {
+                assertTasksUpToDate(":cinteropBase64IOS")
+            }
+
+            buildGradleKts.replaceText(podDeclaration, """pod("Base64", version = "1.1.2")""")
+
+            buildWithCocoapodsWrapper(podImportTaskName) {
+                assertTasksExecuted(":cinteropBase64IOS")
+            }
+        }
+    }
+
     @DisplayName("Installing pod without pod file")
     @GradleTest
     fun testPodInstallWithoutPodFile(gradleVersion: GradleVersion) {

libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/targets/native/cocoapods/KotlinCocoapodsPlugin.kt

@@ -338,6 +338,10 @@ open class KotlinCocoapodsPlugin : Plugin<Project> {
                     val podBuildTaskProvider = project.getPodBuildTaskProvider(target, pod)
                     val buildSettingsFileProvider = project.buildSettingsFileProvider(pod, target)
                     interopTask.inputs.file(buildSettingsFileProvider)
+
+                    // Since we can't properly declare frameworks as inputs (see below) it's the best approximation
+                    interopTask.inputs.files(podBuildTaskProvider.flatMap { it.srcDir })
+
                     interopTask.dependsOn(podBuildTaskProvider)
 
                     interopTask.doFirst { _ ->