lsp4j-build-gradle launch configuration failing with provided jre in Eclipse 2020-12 (jre 15)

[apupier]

Using:
Eclipse IDE for Eclipse Committers (includes Incubating components)

Version: 2020-12 (4.18.0)
Build id: 20201210-1552

with extra software:

• Xtend Xtend IDE 2.24.0.v20201130-1016 org.eclipse.xtend.sdk.feature.group Eclipse Xtend
• Buildship: Eclipse Plug-ins for Gradle 3.1.4.v20200326-1743 org.eclipse.buildship.feature.group Eclipse Buildship

Working Directory: /home/apupier/git/lsp4j
Gradle user home: /home/apupier/.gradle
Gradle Distribution: Gradle wrapper from target build
Gradle Version: 5.5
Java Home: /home/apupier/install/eclipse-committers-2019-06-R-linux-gtk-x86_64/eclipse/plugins/org.eclipse.justj.openjdk.hotspot.jre.full.linux.x86_64_15.0.1.v20201027-0507/jre
JVM Arguments: None
Program Arguments: None
Build Scans Enabled: false
Offline Mode Enabled: false
Gradle Tasks: eclipse assemble


FAILURE: Build failed with an exception.

* What went wrong:
Could not open cp_init remapped class cache for 6a5krabdzij62jglcll542e66 (/home/apupier/.gradle/caches/5.5/scripts-remapped/eclipsePlugin_4akdj3taovy3jm28f2d550zlb/6a5krabdzij62jglcll542e66/cp_init74e694b976d6abaa826c8abac43e9de8).
> Could not open cp_init generic class cache for initialization script '/home/apupier/ws/lsp4j/.metadata/.plugins/org.eclipse.buildship.core/init.d/eclipsePlugin.gradle' (/home/apupier/.gradle/caches/5.5/scripts/6a5krabdzij62jglcll542e66/cp_init/cp_init74e694b976d6abaa826c8abac43e9de8).
   > Could not initialize class org.codehaus.groovy.classgen.Verifier

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

I think, the gradle wrapper needs to be updated to latest version of gradle (6.7.1) but then I have another error;

Working Directory: /home/apupier/git/lsp4j
Gradle user home: /home/apupier/.gradle
Gradle Distribution: Gradle wrapper from target build
Gradle Version: 6.7.1
Java Home: /home/apupier/install/eclipse-committers-2019-06-R-linux-gtk-x86_64/eclipse/plugins/org.eclipse.justj.openjdk.hotspot.jre.full.linux.x86_64_15.0.1.v20201027-0507/jre
JVM Arguments: None
Program Arguments: None
Build Scans Enabled: false
Offline Mode Enabled: false
Gradle Tasks: eclipse assemble


FAILURE: Build failed with an exception.

* Where:
Script '/home/apupier/git/lsp4j/gradle/manifest-gen.gradle' line: 13

* What went wrong:
A problem occurred evaluating script.
> Plugin with id 'osgi' not found.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

Deprecated Gradle features were used in this build, making it incompatible with Gradle 7.0.
Use '--warning-mode all' to show the individual deprecation warnings.
See https://docs.gradle.org/6.7.1/userguide/command_line_interface.html#sec:command_line_warnings

BUILD FAILED in 9s

workaround:

• specify JAVA_HOME pointing to JDK 8 in Run configuration -> Gradle Task -> lsp4j-build-gradle -> Project Settings -> Override project Settings -> Advanced Options -> Java home

[apupier]

ok, seems that the upgrade requires soem change for osgi bundle: https://github.com/bndtools/bnd/blob/master/biz.aQute.bnd.gradle/README.md#replacing-use-of-gradles-deprecated-osgi-plugin looking

[apupier]

here is a failed attempt to use the new osgi plugin for gradle: https://github.com/apupier/lsp4j/tree/486-useNewerGradleVersion

current problem is:

2020-12-29T16:20:16.302+0100 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] 
2020-12-29T16:20:16.302+0100 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] FAILURE: Build failed with an exception.
2020-12-29T16:20:16.302+0100 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] 
2020-12-29T16:20:16.302+0100 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] * Where:
2020-12-29T16:20:16.302+0100 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] Script '/home/apupier/git/lsp4j/gradle/manifest-gen.gradle' line: 14
2020-12-29T16:20:16.302+0100 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] 
2020-12-29T16:20:16.302+0100 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] * What went wrong:
2020-12-29T16:20:16.303+0100 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] A problem occurred evaluating script.
2020-12-29T16:20:16.303+0100 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] > Plugin with id 'biz.aQute.bnd.builder' not found.
2020-12-29T16:20:16.303+0100 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] 
2020-12-29T16:20:16.303+0100 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] * Try:
2020-12-29T16:20:16.303+0100 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] Run with --stacktrace option to get the stack trace.  Run with --scan to get full insights.
2020-12-29T16:20:16.303+0100 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] 
2020-12-29T16:20:16.303+0100 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] * Get more help at https://help.gradle.org

[jonahgraham]

workaround:

• specify JAVA_HOME pointing to JDK 8 in Run configuration -> Gradle Task -> lsp4j-build-gradle -> Project Settings -> Override project Settings -> Advanced Options -> Java home

Thank you for providing a workaround.

I think the upgrade to newer Gradle (6.x vs 5.x) is a bigger job. I appreciate you having a look at it.