Fix GitHub Actions build

Author: emlun

.github/workflows/build.yml

@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        java: [8, 11, 17, 20]
+        java: [8, 11, 17, 18]
         distribution: [temurin]
         include:
           - java: 17
@@ -72,10 +72,10 @@ jobs:
 
     - name: Check binary reproducibility
       run: |
-        ./gradlew clean jar
+        ./gradlew clean primaryPublishJar
         find . -name '*.jar' | xargs sha256sum | tee checksums.sha256sum
-        ./gradlew clean jar && sha256sum -c checksums.sha256sum
-        ./gradlew clean jar && sha256sum -c checksums.sha256sum
+        ./gradlew clean primaryPublishJar && sha256sum -c checksums.sha256sum
+        ./gradlew clean primaryPublishJar && sha256sum -c checksums.sha256sum
 
   publish-test-results:
     name: Publish test results

build.gradle

@@ -27,7 +27,7 @@ project.ext.publishEnabled = !isCiBuild &&
   project.hasProperty('ossrhUsername') && project.hasProperty('ossrhPassword')
 
 wrapper {
-  gradleVersion = '7.5.1'
+  gradleVersion = '8.1.1'
 }
 
 dependencies {

buildSrc/src/main/groovy/project-convention-archives.gradle

@@ -10,6 +10,10 @@ javadoc {
     options.addStringOption("charset", "UTF-8")
 }
 
+project.tasks.create("primaryPublishJar") {
+    dependsOn(project.tasks.jar)
+}
+
 project.tasks.withType(Jar.class) {
     manifest {
         attributes([

buildSrc/src/main/kotlin/project-convention-java.gradle.kts

@@ -5,7 +5,7 @@ plugins {
 java {
     toolchain {
         // Java 8 binaries are not reproducible
-        languageVersion.set(JavaLanguageVersion.of(10))
+        languageVersion.set(JavaLanguageVersion.of(11))
     }
 }
 

buildSrc/src/main/kotlin/project-convention-scala.gradle.kts

@@ -7,5 +7,8 @@ tasks.withType(ScalaCompile::class) {
     // See: https://github.com/gradle/gradle/issues/23193
     // See: https://github.com/gradle/gradle/pull/23198
     // See: https://github.com/gradle/gradle/pull/23751
-    scalaCompileOptions.additionalParameters = mutableListOf("-Wunused", "-release", "8", "-target:8")
+    scalaCompileOptions.additionalParameters = mutableListOf("-Wunused")
+    javaLauncher.set(javaToolchains.launcherFor {
+        languageVersion.set(JavaLanguageVersion.of(8))
+    })
 }

gradle/wrapper/gradle-wrapper.jar

@@ -1,5 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.5.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.1.1-bin.zip
+networkTimeout=10000
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

gradle/wrapper/gradle-wrapper.properties

@@ -55,7 +55,7 @@
 #       Darwin, MinGW, and NonStop.
 #
 #   (3) This script is generated from the Groovy template
-#       https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
 #       within the Gradle project.
 #
 #       You can find Gradle at https://github.com/gradle/gradle/.
@@ -80,13 +80,10 @@ do
     esac
 done
 
-APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
-
-APP_NAME="Gradle"
+# This is normally unused
+# shellcheck disable=SC2034
 APP_BASE_NAME=${0##*/}
-
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
 
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD=maximum
@@ -143,12 +140,16 @@ fi
 if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
     case $MAX_FD in #(
       max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC3045
         MAX_FD=$( ulimit -H -n ) ||
             warn "Could not query maximum file descriptor limit"
     esac
     case $MAX_FD in  #(
       '' | soft) :;; #(
       *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC3045
         ulimit -n "$MAX_FD" ||
             warn "Could not set maximum file descriptor limit to $MAX_FD"
     esac
@@ -193,6 +194,10 @@ if "$cygwin" || "$msys" ; then
     done
 fi
 
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
 # Collect all arguments for the java command;
 #   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
 #     shell script including quotes and variable substitutions, so put them in

gradlew

@@ -26,6 +26,7 @@ if "%OS%"=="Windows_NT" setlocal
 
 set DIRNAME=%~dp0
 if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
 set APP_BASE_NAME=%~n0
 set APP_HOME=%DIRNAME%