Resolve Gradle configurations cache issues

compiler/generate_build_properties.gradle

@@ -4,12 +4,17 @@ sourceSets {
   test.java.srcDirs += "$buildDir/$generatedDirPath"
 }
 
+def warningsAsErrors = rootProject.ext.warningsAsErrors
+
 def generateBuildProperties = project.tasks.register('generateBuildProperties') {
-  File buildPropertiesFile = new File(new File(project.buildDir, generatedDirPath), 'BuildProperties.kt')
+  File buildPropertiesFile = layout.buildDirectory.file(generatedDirPath + '/BuildProperties.kt')
+      .get().asFile
+
+  def fullTestRun = libs.versions.config.fullTestRun.get()
 
-  inputs.property 'fullTestRun', libs.versions.config.fullTestRun.get()
+  inputs.property 'fullTestRun', fullTestRun
   inputs.property 'kotlinVersion', libs.versions.kotlin.get()
-  inputs.property 'warningsAsErrors', rootProject.ext.warningsAsErrors
+  inputs.property 'warningsAsErrors', warningsAsErrors
 
   outputs.file buildPropertiesFile
 
@@ -18,9 +23,9 @@ def generateBuildProperties = project.tasks.register('generateBuildProperties')
     buildPropertiesFile.write """\
       package com.squareup.anvil.compiler
 
-      internal const val WARNINGS_AS_ERRORS = ${rootProject.ext.warningsAsErrors}
+      internal const val WARNINGS_AS_ERRORS = $warningsAsErrors
 
-      internal const val FULL_TEST_RUN = ${rootProject.ext.fullTestRun}
+      internal const val FULL_TEST_RUN = $fullTestRun
     """.stripIndent()
   }
 }

gradle-plugin/generate_build_properties.gradle

@@ -9,11 +9,11 @@ sourceSets {
 }
 
 def generateBuildProperties = project.tasks.register('generateBuildProperties') {
-  def version = project.findProperty('VERSION_NAME')
-  def group = project.findProperty('GROUP')
+  def version = getProperty('VERSION_NAME').toString()
+  def group = getProperty('GROUP').toString()
 
-  File buildPropertiesFile =
-      new File(new File(project.buildDir, generatedDirPath), 'BuildProperties.kt')
+  File buildPropertiesFile = layout.buildDirectory.file(generatedDirPath + '/BuildProperties.kt')
+      .get().asFile
 
   inputs.property 'version', version
   inputs.property 'group', group
@@ -51,7 +51,8 @@ afterEvaluate {
       tasks.named(taskName).configure {
         it.dependsOn(generateBuildProperties)
       }
-    } catch (UnknownTaskException ignored) { }
+    } catch (UnknownTaskException ignored) {
+    }
   }
 
   // javaSourcesJar is registered even later. Gradle is love.

integration-tests/tests/build.gradle

@@ -23,23 +23,3 @@ dependencies {
 
   kaptTest libs.dagger2.compiler
 }
-
-// Okay, this check is sketchy here. But this module serves as integration test so it's not too
-// terrible. What would be worse is setting up integration tests in the Gradle plugin itself,
-// because it requires so much code and might not represent the real world usage.
-gradle.taskGraph.afterTask { Task task ->
-  if (task.project != project) return
-
-  task.inputs.properties.each { key, value ->
-    if (key.contains('com.squareup.anvil.compiler.src-gen-dir')) {
-      boolean isAbsolute = new File(value.toString()).isAbsolute()
-      if (isAbsolute) {
-        throw new GradleException(
-            "The workaround for absolute paths in the Anvil Gradle plugin is broken. Key: $key, " +
-                "value: $value, task: $task. For more context see " +
-                "https://github.com/square/anvil/issues/65"
-        )
-      }
-    }
-  }
-}