fix: Release with JDK 8, #2994 (#2995)

* Missing --release 8 in javacOptions
* Release must be with JDK 8 because --release 8 flag prevents access to
  com.sun.nio.file.SensitivityWatchEventModifier

.github/workflows/check-build-test.yml

@@ -43,6 +43,32 @@ jobs:
  - name: "Code style, compile tests, MiMa. Run locally with: sbt \"verifyCodeStyle; +Test/compile; mimaReportBinaryIssues\""
  run: sbt "verifyCodeStyle; +Test/compile; mimaReportBinaryIssues"
 
+ compile-jdk-8:
+ name: Compile with JDK 8
+ runs-on: ubuntu-22.04
+ env:
+ JAVA_OPTS: -Xms2G -Xmx2G -Xss2M -XX:ReservedCodeCacheSize=256M -Dfile.encoding=UTF-8
+
+ steps:
+ - name: Checkout
+ uses: actions/checkout@v3.1.0
+ with: # https://github.com/olafurpg/setup-scala#faster-checkout-of-big-repos
+ fetch-depth: 100
+
+ - name: Fetch tags
+ run: git fetch --depth=100 origin +refs/tags/*:refs/tags/*
+
+ - name: Set up JDK 8
+ uses: coursier/setup-action@v1.3.0
+ with:
+ jvm: adopt:1.8.0-275
+
+ - name: Cache Coursier cache
+ uses: coursier/cache-action@v6.4.0
+
+ - name: "Compile JDK 8"
+ run: sbt compile
+
  documentation:
  name: ScalaDoc, Documentation with Paradox
  runs-on: ubuntu-22.04

.github/workflows/publish.yml

@@ -29,10 +29,11 @@ jobs:
  - name: Cache Coursier cache
  uses: coursier/cache-action@v6.4.0
 
- - name: Set up JDK 11
+ # Release must be with JDK 8 because --release 8 flag prevents access to com.sun.nio.file.SensitivityWatchEventModifier
+ - name: Set up JDK 8
  uses: coursier/setup-action@v1.3.0
  with:
- jvm: temurin:1.11.0.17
+ jvm: adopt:1.8.0-275
 
  - name: Publish artifacts for all Scala versions
  env:

project/Common.scala

@@ -114,6 +114,9 @@ object Common extends AutoPlugin {
  "-Xlint:try",
  "-Xlint:unchecked",
  "-Xlint:varargs"
+ // Release must be with JDK 8 because this flag prevents access to com.sun.nio.file.SensitivityWatchEventModifier
+ // "--release",
+ // "8"
  ),
  compile / javacOptions ++= (scalaVersion.value match {
  case Dependencies.Scala213 if insideCI.value && fatalWarnings.value && !Dependencies.CronBuild =>