Renjin 無法安裝（默認）包

Question

我是 Renjin 的新手，無法使用 AetherPackageLoader 安裝軟件包。 我遇到了與Renjin can't load pckages一樣的錯誤，但有一個看似正確的 Gradle 文件（請注意 a4Base 依賴項）：

testCompile group: 'junit', name: 'junit', version: '4.12'
compile "org.renjin:renjin-script-engine:3.5-beta43";
//    compile group: 'org.renjin.cran', name: 'e1071', version: '1.7-2-b1'
compile group: 'org.renjin', name: 'renjin-aether-package-loader', version: '0.8.1938'
compile "org.renjin.bioconductor:a4Base:1.27.0-b3"

完整的錯誤是：

18:08:35: Executing task 'PackageTest.main()'...

Starting Gradle Daemon...
Gradle Daemon started in 1 s 867 ms
> Task :compileJava
> Task :processResources NO-SOURCE
> Task :classes

> Task :PackageTest.main() FAILED
Using local repository: /Users/miguel/.m2/repository
Exception in thread "main" java.lang.RuntimeException: org.renjin.eval.EvalException: org.renjin.aether.AetherPackageLoader.load(Lorg/renjin/primitives/packaging/FqPackageName;)Ljava/util/Optional;
    at org.renjin.eval.SessionBuilder.build(SessionBuilder.java:192)
    at PackageTest.main(PackageTest.java:26)
Caused by: org.renjin.eval.EvalException: org.renjin.aether.AetherPackageLoader.load(Lorg/renjin/primitives/packaging/FqPackageName;)Ljava/util/Optional;
    at org.renjin.sexp.Closure.applyPromised(Closure.java:212)
    at org.renjin.sexp.Closure.apply(Closure.java:133)
    at org.renjin.sexp.FunctionCall.eval(FunctionCall.java:80)
    at org.renjin.eval.Context.evaluate(Context.java:282)
    at org.renjin.eval.Context.evaluate(Context.java:209)
    at org.renjin.eval.SessionBuilder.build(SessionBuilder.java:187)
    ... 1 more
Caused by: java.lang.AbstractMethodError: org.renjin.aether.AetherPackageLoader.load(Lorg/renjin/primitives/packaging/FqPackageName;)Ljava/util/Optional;
    at org.renjin.primitives.packaging.NamespaceRegistry.getNamespace(NamespaceRegistry.java:152)
    at org.renjin.primitives.packaging.NamespaceRegistry.getNamespace(NamespaceRegistry.java:130)
    at org.renjin.primitives.packaging.NamespaceRegistry.getNamespace(NamespaceRegistry.java:114)
    at org.renjin.primitives.packaging.Packages.library(Packages.java:39)
    at org.renjin.primitives.R$primitive$library.doApply(R$primitive$library.java:68)
    at org.renjin.primitives.R$primitive$library.applyPromised(R$primitive$library.java:33)
    at org.renjin.sexp.BuiltinFunction.apply(BuiltinFunction.java:100)
    at org.renjin.primitives.special.InternalFunction.apply(InternalFunction.java:46)
    at org.renjin.sexp.FunctionCall.eval(FunctionCall.java:80)
    at org.renjin.eval.Context.evaluate(Context.java:282)
    at org.renjin.primitives.special.BeginFunction.apply(BeginFunction.java:39)
    at org.renjin.sexp.FunctionCall.eval(FunctionCall.java:80)
    at org.renjin.sexp.Closure.applyPromised(Closure.java:200)
    ... 6 more

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':PackageTest.main()'.
> Process 'command '/Library/Java/JavaVirtualMachines/jdk1.8.0_231.jdk/Contents/Home/bin/java'' finished with non-zero exit value 1

* 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 48s
2 actionable tasks: 2 executed
18:09:24: Task execution finished 'PackageTest.main()'.

示例代碼僅使用 AetherPackageLoader 實例配置會話，並嘗試執行加載需要安裝的庫的 R 命令。 當會話構建器創建會話並加載默認包時，代碼會更快失敗。

AetherPackageLoader loader = new AetherPackageLoader();
loader.setRepositoryListener(new ConsoleRepositoryListener(System.out));
loader.setTransferListener(new ConsoleTransferListener(System.out));

Session session = new SessionBuilder()
        .withDefaultPackages()
        .setPackageLoader(loader)
        .build();

RenjinScriptEngineFactory factory = new RenjinScriptEngineFactory();
RenjinScriptEngine engine = factory.getScriptEngine(session);

String code = "library('digest')";

SEXP sexp = (SEXP)engine.eval(code);
System.out.println(sexp);

我很感激 AetherPackageLoader 的任何幫助。 我閱讀了文檔，但無法判斷缺少什么。 非常感謝，米格爾

編輯：我無法在 Windows PC 上重現此錯誤。 我相信這與我在更新到 MacOS Catalina 后在 RStudio 中遇到的其他錯誤有關。 我認為更新后權限有問題。

Answer 1

如果您將依賴項包含在 gradle 文件中，那么這些庫將在類路徑中可用，並且無需使用 AetherPackageLoader。