./dtcw previewSite fails with java.lang.NoClassDefFoundError: org/gradle/api/internal/artifacts/dsl/dependencies/DependencyFactory$ClassPathNotation

[nfrohmueller]

Describe the bug
When running ./dtcw previewSite or ./dtcw docker previewSite the build fails in task :jettyRun throwing the exception

Caused by: java.lang.NoClassDefFoundError: org/gradle/api/internal/artifacts/dsl/dependencies/DependencyFactory$ClassPathNotation
        at org.akhikhl.gretty.DefaultLauncher.getCurrentGroovy(DefaultLauncher.groovy:44)
        at org.akhikhl.gretty.DefaultLauncher$getCurrentGroovy$0.callStatic(Unknown Source)
        at org.akhikhl.gretty.DefaultLauncher.getRunnerClassPath(DefaultLauncher.groovy:37)
        at org.akhikhl.gretty.DefaultLauncher$getRunnerClassPath.callStatic(Unknown Source)
        at org.akhikhl.gretty.DefaultLauncher.beforeLaunch(DefaultLauncher.groovy:69)
        at org.akhikhl.gretty.LauncherBase.launch(LauncherBase.groovy:141)

To Reproduce
Steps to reproduce the behavior:

1. In a clean project dir, install the arc42 template following the guidelines https://doctoolchain.org/docToolchain/v2.0.x/010_manual/20_install.html#_installation_overview and run the previewSite-task. (It also fails in a real project, no relation to the chosen template).

curl -Lo dtcw https://doctoolchain.org/dtcw
chmod +x dtcw
./dtcw install doctoolchain
./dtcw docker downloadTemplate
./dtcw docker generateSite
./dtcw docker previewSite

2. Error:

❯ ./dtcw docker previewSite
dtcw 0.50 - ##DTCW_GIT_HASH##
docToolchain 3.1.2
OS/arch: Darwin/x86_64
Available docToolchain environments: local sdk docker
Environments with docToolchain [3.1.2]: local docker
Using environment: docker
To honour the JVM settings for this build a single-use Daemon process will be forked. See https://docs.gradle.org/8.1.1/userguide/gradle_daemon.html#sec:disabling_the_daemon.
Daemon will be stopped at the end of the build
> Task :core:compileJava NO-SOURCE
> Task :core:compileGroovy
> Task :core:processResources NO-SOURCE
> Task :core:classes
> Task :core:jar
> Task :previewSite
> Task :prepareInplaceWebAppFolder NO-SOURCE
> Task :createInplaceWebAppFolder
> Task :compileJava NO-SOURCE
> Task :compileGroovy NO-SOURCE
> Task :processResources NO-SOURCE
> Task :classes UP-TO-DATE
> Task :prepareInplaceWebAppClasses UP-TO-DATE
> Task :prepareInplaceWebApp
> Task :jettyRun FAILED
FAILURE: Build failed with an exception.


* What went wrong:
Execution failed for task ':jettyRun'.
> org/gradle/api/internal/artifacts/dsl/dependencies/DependencyFactory$ClassPathNotation

* 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

BUILD FAILED in 31s
5 actionable tasks: 5 executed

Expected behavior
The `previewSite task should finish without throwing an error

Configuration

• docToolchain 3.1.2
• OS: macOS (docker / java)
• Relevant JDK 17, gradle 8.1.1

[rdmueller]

verified as bug.

but shouldn't be a blocker. call open build/microsite/output/index.html instead. No server needed anymore.

[PacoVK]

Could we get rid of the Webserver dependency then? @rdmueller ? Afaik this dependency is quite old due to lack of Java 8 support in newer versions but since we dropped 8 in v3.x we may now decide to get rid at all

[rdmueller]

yes, good idea. let's replace it with a hint that you can view build/microsite/output/index.html directly in the browse, or, if you want a server, use python -m http.server.
Who wants to create this PR?

[PacoVK]

won't resolve since #1310 deprecated the previewSite task