Fix changelog task to use git tag as input

buildSrc/src/main/kotlin/com/wbrawner/releasehelper/ChangelogTask.kt

@@ -2,25 +2,37 @@ package com.wbrawner.releasehelper
 
 import org.gradle.api.DefaultTask
 import org.gradle.api.file.RegularFileProperty
+import org.gradle.api.internal.provider.Providers
 import org.gradle.api.model.ObjectFactory
+import org.gradle.api.provider.Property
+import org.gradle.api.provider.ProviderFactory
+import org.gradle.api.tasks.Input
 import org.gradle.api.tasks.OutputFile
 import org.gradle.api.tasks.TaskAction
 import javax.inject.Inject
 
-private const val CHANGELOG_PATH = "src/play/play/release-notes/en-US/default.txt"
+private const val CHANGELOG_PATH = "src/play/play/release-notes/en-US/production.txt"
 
-abstract class ChangelogTask @Inject constructor(objectFactory: ObjectFactory) : DefaultTask() {
+abstract class ChangelogTask @Inject constructor(
+    objectFactory: ObjectFactory,
+    providers: ProviderFactory,
+) : DefaultTask() {
     @get:OutputFile
     val changelogFile: RegularFileProperty = objectFactory.fileProperty()
 
+    @get:Input
+    @Suppress("UnstableApiUsage")
+    val latestTag: String = providers.exec {
+        commandLine("git" , "describe", "--tags", "--abbrev=0")
+    }.standardOutput.asText.get()
+
     init {
         changelogFile.set(project.layout.projectDirectory.file(CHANGELOG_PATH))
     }
 
     @TaskAction
     fun execute() {
-        val latestTag = "git describe --tags --abbrev=0".execute()
+        val changelog = "git log --format=\"%B\" ${latestTag.trim()}..".execute()
-        val changelog = "git log --format=\"%B\" ${latestTag.first().trim()}..".execute()
         logger.info("Latest tag: $latestTag")
         logger.info("Changelog: ${changelog.joinToString("\n")}")
         changelogFile.get().asFile.writer().use { writer ->
@@ -36,4 +48,4 @@ abstract class ChangelogTask @Inject constructor(objectFactory: ObjectFactory) :
         .start()
         .inputReader()
         .readLines()
-}
+}