Fix #632: drop Kotlin 1.4 support

.github/workflows/main.yml

@@ -23,7 +23,8 @@ jobs:
  fail-fast: false
  matrix:
  java_version: ['8', '11', '17']
- kotlin_version: ['1.4.32', '1.5.32', '1.6.21', '1.7.20']
+ # Jackson 2.15 drops support for Kotlin 1.4, adds 1.8
+ kotlin_version: ['1.5.32', '1.6.21', '1.7.20', '1.8.10']
  os: ['ubuntu-20.04']
  env:
  JAVA_OPTS: "-XX:+TieredCompilation -XX:TieredStopAtLevel=1"

README.md

@@ -130,6 +130,7 @@ println(arrayNode.toString()) // ["foo",true,1,1.0,"YmFy"]
 Different `kotlin-core` versions are supported by different Jackson Kotlin module minor versions.
 Here is an incomplete list of supported versions:
 
+* Jackson 2.15.x: Kotlin-core 1.5 - 1.8
 * Jackson 2.14.x: Kotlin-core 1.4 - 1.7
 * Jackson 2.13.x: Kotlin-core 1.4 - 1.7
 

pom.xml

@@ -59,12 +59,16 @@
  <properties>
  <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 
- <!-- 16-Oct-2019, tatu: No point trying to target Java 7, Java 8 needed for build anyway -->
  <javac.src.version>1.8</javac.src.version>
  <javac.target.version>1.8</javac.target.version>
 
- <version.kotlin>1.5.32</version.kotlin>
-
+ <!-- 11-Mar-2023, tatu: [kotlin#632] drops Kotlin 1.4 so target 1.5, but
+ build with 1.6.x for now
+ -->
+ <version.kotlin>1.6.21</version.kotlin>
+ <kotlin.compiler.languageVersion>1.5</kotlin.compiler.languageVersion>
+ <kotlin.compiler.apiVersion>1.5</kotlin.compiler.apiVersion>
+
  <!-- Generate PackageVersion.java into this directory. -->
  <packageVersion.dir>com/fasterxml/jackson/module/kotlin</packageVersion.dir>
  <packageVersion.package>${project.groupId}.kotlin</packageVersion.package>