From 7707f18de037934b0fe5fabfa25b4980738d9135 Mon Sep 17 00:00:00 2001
From: Matthew Haughton <3flex@users.noreply.github.com>
Date: Wed, 20 Jul 2022 04:03:18 +1000
Subject: [PATCH] Make verifyGeneratorOutput task configuration cache
 compatible (#5100)

---
 detekt-generator/build.gradle.kts | 11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)

diff --git a/detekt-generator/build.gradle.kts b/detekt-generator/build.gradle.kts
index e1a96393dcb..8add8a7aa23 100644
--- a/detekt-generator/build.gradle.kts
+++ b/detekt-generator/build.gradle.kts
@@ -1,5 +1,3 @@
-import java.io.ByteArrayOutputStream
-
 plugins {
     id("module")
 }
@@ -68,16 +66,13 @@ val generateDocumentation by tasks.registering(JavaExec::class) {
 }
 
 val verifyGeneratorOutput by tasks.registering(Exec::class) {
-    notCompatibleWithConfigurationCache("cannot serialize object of type java.io.ByteArrayOutputStream")
     dependsOn(generateDocumentation)
     description = "Verifies that the default-detekt-config.yml is up-to-date"
-    val configDiff = ByteArrayOutputStream()
-
-    commandLine = listOf("git", "diff", defaultConfigFile, deprecationFile)
-    standardOutput = configDiff
+    commandLine = listOf("git", "diff", "--quiet", defaultConfigFile, deprecationFile)
+    isIgnoreExitValue = true
 
     doLast {
-        if (configDiff.toString().isNotEmpty()) {
+        if (executionResult.get().exitValue == 1) {
             throw GradleException(
                 "The default-detekt-config.yml is not up-to-date. " +
                     "You can execute the generateDocumentation Gradle task " +