MSys2 下的 Scala - 无法初始化终端
Scala under MSys2 - failure to initialize terminal
我的环境是Windows10x64/Scala2.11.7/Msys2最新的
当从 MSys2 控制台 运行ning Scala 时，我看到以下内容：
$ scala
[ERROR] Terminal initialization failed; falling back to unsupported
java.lang.NoClassDefFoundError: Could not initialize class org.fusesource.jansi.internal.Kernel32
at org.fusesource.jansi.internal.WindowsSupport.getConsoleMode(WindowsSupport.java:50)
at jline.WindowsTerminal.getConsoleMode(WindowsTerminal.java:204)
at jline.WindowsTerminal.init(WindowsTerminal.java:82)
at jline.TerminalFactory.create(TerminalFactory.java:101)
at jline.TerminalFactory.get(TerminalFactory.java:158)
at jline.console.ConsoleReader.<init>(ConsoleReader.java:229)
at jline.console.ConsoleReader.<init>(ConsoleReader.java:221)
at jline.console.ConsoleReader.<init>(ConsoleReader.java:209)
at scala.tools.nsc.interpreter.jline.JLineConsoleReader.<init>(JLineReader.scala:61)
at scala.tools.nsc.interpreter.jline.InteractiveReader.<init>(JLineReader.scala:33)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at scala.tools.nsc.interpreter.ILoop$$anonfun$scala$tools$nsc$interpreter$ILoop$$instantiate.apply(ILoop.scala:865)
at scala.tools.nsc.interpreter.ILoop$$anonfun$scala$tools$nsc$interpreter$ILoop$$instantiate.apply(ILoop.scala:862)
at scala.tools.nsc.interpreter.ILoop.scala$tools$nsc$interpreter$ILoop$$mkReader(ILoop.scala:871)
at scala.tools.nsc.interpreter.ILoop$$anonfun$$anonfun$apply.apply(ILoop.scala:875)
at scala.tools.nsc.interpreter.ILoop$$anonfun$$anonfun$apply.apply(ILoop.scala:875)
at scala.util.Try$.apply(Try.scala:192)
at scala.tools.nsc.interpreter.ILoop$$anonfun.apply(ILoop.scala:875)
at scala.tools.nsc.interpreter.ILoop$$anonfun.apply(ILoop.scala:875)
at scala.collection.immutable.Stream.map(Stream.scala:418)
at scala.tools.nsc.interpreter.ILoop.chooseReader(ILoop.scala:875)
at scala.tools.nsc.interpreter.ILoop$$anonfun$process$$anonfun$apply$mcZ$sp.apply(ILoop.scala:916)
at scala.tools.nsc.interpreter.ILoop$$anonfun$process.apply$mcZ$sp(ILoop.scala:916)
at scala.tools.nsc.interpreter.ILoop$$anonfun$process.apply(ILoop.scala:911)
at scala.tools.nsc.interpreter.ILoop$$anonfun$process.apply(ILoop.scala:911)
at scala.reflect.internal.util.ScalaClassLoader$.savingContextLoader(ScalaClassLoader.scala:97)
at scala.tools.nsc.interpreter.ILoop.process(ILoop.scala:911)
at scala.tools.nsc.MainGenericRunner.runTarget(MainGenericRunner.scala:74)
at scala.tools.nsc.MainGenericRunner.run(MainGenericRunner.scala:87)
at scala.tools.nsc.MainGenericRunner.process(MainGenericRunner.scala:98)
at scala.tools.nsc.MainGenericRunner$.main(MainGenericRunner.scala:103)
at scala.tools.nsc.MainGenericRunner.main(MainGenericRunner.scala)
Welcome to Scala version 2.11.7 (Java HotSpot(TM) 64-Bit Server VM, Java 1.7.0_79).
Type in expressions to have them evaluated.
Type :help for more information.
scala>
当从 cmd.exe 中 运行 安装它时，它按预期工作。为了调试这个问题，我尝试了以下 Scala 程序：
object Test extends App {
println(org.fusesource.jansi.internal.WindowsSupport.getConsoleMode)
}
当从 Msys2 中 运行 时，会产生以下错误：
java.lang.UnsatisfiedLinkError: Could not load library. Reasons: [no jansi in java.library.path]
at org.fusesource.hawtjni.runtime.Library.doLoad(Library.java:182)
at org.fusesource.hawtjni.runtime.Library.load(Library.java:140)
at org.fusesource.jansi.internal.Kernel32.<clinit>(Kernel32.java:37)
at org.fusesource.jansi.internal.WindowsSupport.getConsoleMode(WindowsSupport.java:50)
at Test$.delayedEndpoint$Test(Test.scala:5)
at Test$delayedInit$body.apply(Test.scala:1)
at scala.Function0$class.apply$mcV$sp(Function0.scala:34)
at scala.runtime.AbstractFunction0.apply$mcV$sp(AbstractFunction0.scala:12)
at scala.App$$anonfun$main.apply(App.scala:76)
at scala.App$$anonfun$main.apply(App.scala:76)
at scala.collection.immutable.List.foreach(List.scala:381)
at scala.collection.generic.TraversableForwarder$class.foreach(TraversableForwarder.scala:35)
at scala.App$class.main(App.scala:76)
at Test$.main(Test.scala:1)
at Test.main(Test.scala)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at scala.reflect.internal.util.ScalaClassLoader$$anonfun$run.apply(ScalaClassLoader.scala:70)
at scala.reflect.internal.util.ScalaClassLoader$class.asContext(ScalaClassLoader.scala:31)
at scala.reflect.internal.util.ScalaClassLoader$URLClassLoader.asContext(ScalaClassLoader.scala:101)
at scala.reflect.internal.util.ScalaClassLoader$class.run(ScalaClassLoader.scala:70)
at scala.reflect.internal.util.ScalaClassLoader$URLClassLoader.run(ScalaClassLoader.scala:101)
at scala.tools.nsc.CommonRunner$class.run(ObjectRunner.scala:22)
at scala.tools.nsc.ObjectRunner$.run(ObjectRunner.scala:39)
at scala.tools.nsc.CommonRunner$class.runAndCatch(ObjectRunner.scala:29)
at scala.tools.nsc.ObjectRunner$.runAndCatch(ObjectRunner.scala:39)
at scala.tools.nsc.MainGenericRunner.runTarget(MainGenericRunner.scala:65)
at scala.tools.nsc.MainGenericRunner.run(MainGenericRunner.scala:87)
at scala.tools.nsc.MainGenericRunner.process(MainGenericRunner.scala:98)
at scala.tools.nsc.MainGenericRunner$.main(MainGenericRunner.scala:103)
at scala.tools.nsc.MainGenericRunner.main(MainGenericRunner.scala)
我试过但没有用：
- 互联网上的一些帖子提到它可能是由于缺少 VC2008 运行时间造成的，所以我确保我同时拥有 x64 和 x86。
- 正在从 scala/lib/jline-2.12.1.jar 中提取 jansi.dll 并将其放入我的工作目录（java.library.path 中包含“.”）。
- 从一个全新的 MSys2 主目录开始。
- 运行ning bash --login -i from cmd.exe （运行ning scala 时同样的错误）
- 尝试 32 位和 64 位 JRE
还有一点：这个问题不影响sbt；例如，运行ning "sbt console" 给了我一个工作的 Scala 命令行，尽管版本是 2.10.4。
问题是由于 scala/bin 目录中的 scala shell 脚本与同一目录中的 scala.bat 之间的名称冲突引起的。 Msys2 运行 shell 脚本，而 cmd.exe 运行批处理文件。显然，shell 脚本不适合 Msys2，这导致了我看到的错误。从 MSys2 发出 cmd //c scala.bat 会生成功能正常的 Scala 命令行。
编辑 scala shell 脚本以支持 MSys2 也很简单： https://gist.github.com/kirillkh/a9ba2e00ef2e901f13bf
我已经在 GitHub 上打开了一个包含此更改的拉取请求：https://github.com/scala/scala/pull/4674
我的环境是Windows10x64/Scala2.11.7/Msys2最新的
当从 MSys2 控制台 运行ning Scala 时，我看到以下内容：
$ scala
[ERROR] Terminal initialization failed; falling back to unsupported
java.lang.NoClassDefFoundError: Could not initialize class org.fusesource.jansi.internal.Kernel32
at org.fusesource.jansi.internal.WindowsSupport.getConsoleMode(WindowsSupport.java:50)
at jline.WindowsTerminal.getConsoleMode(WindowsTerminal.java:204)
at jline.WindowsTerminal.init(WindowsTerminal.java:82)
at jline.TerminalFactory.create(TerminalFactory.java:101)
at jline.TerminalFactory.get(TerminalFactory.java:158)
at jline.console.ConsoleReader.<init>(ConsoleReader.java:229)
at jline.console.ConsoleReader.<init>(ConsoleReader.java:221)
at jline.console.ConsoleReader.<init>(ConsoleReader.java:209)
at scala.tools.nsc.interpreter.jline.JLineConsoleReader.<init>(JLineReader.scala:61)
at scala.tools.nsc.interpreter.jline.InteractiveReader.<init>(JLineReader.scala:33)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at scala.tools.nsc.interpreter.ILoop$$anonfun$scala$tools$nsc$interpreter$ILoop$$instantiate.apply(ILoop.scala:865)
at scala.tools.nsc.interpreter.ILoop$$anonfun$scala$tools$nsc$interpreter$ILoop$$instantiate.apply(ILoop.scala:862)
at scala.tools.nsc.interpreter.ILoop.scala$tools$nsc$interpreter$ILoop$$mkReader(ILoop.scala:871)
at scala.tools.nsc.interpreter.ILoop$$anonfun$$anonfun$apply.apply(ILoop.scala:875)
at scala.tools.nsc.interpreter.ILoop$$anonfun$$anonfun$apply.apply(ILoop.scala:875)
at scala.util.Try$.apply(Try.scala:192)
at scala.tools.nsc.interpreter.ILoop$$anonfun.apply(ILoop.scala:875)
at scala.tools.nsc.interpreter.ILoop$$anonfun.apply(ILoop.scala:875)
at scala.collection.immutable.Stream.map(Stream.scala:418)
at scala.tools.nsc.interpreter.ILoop.chooseReader(ILoop.scala:875)
at scala.tools.nsc.interpreter.ILoop$$anonfun$process$$anonfun$apply$mcZ$sp.apply(ILoop.scala:916)
at scala.tools.nsc.interpreter.ILoop$$anonfun$process.apply$mcZ$sp(ILoop.scala:916)
at scala.tools.nsc.interpreter.ILoop$$anonfun$process.apply(ILoop.scala:911)
at scala.tools.nsc.interpreter.ILoop$$anonfun$process.apply(ILoop.scala:911)
at scala.reflect.internal.util.ScalaClassLoader$.savingContextLoader(ScalaClassLoader.scala:97)
at scala.tools.nsc.interpreter.ILoop.process(ILoop.scala:911)
at scala.tools.nsc.MainGenericRunner.runTarget(MainGenericRunner.scala:74)
at scala.tools.nsc.MainGenericRunner.run(MainGenericRunner.scala:87)
at scala.tools.nsc.MainGenericRunner.process(MainGenericRunner.scala:98)
at scala.tools.nsc.MainGenericRunner$.main(MainGenericRunner.scala:103)
at scala.tools.nsc.MainGenericRunner.main(MainGenericRunner.scala)
Welcome to Scala version 2.11.7 (Java HotSpot(TM) 64-Bit Server VM, Java 1.7.0_79).
Type in expressions to have them evaluated.
Type :help for more information.
scala>
当从 cmd.exe 中 运行 安装它时，它按预期工作。为了调试这个问题，我尝试了以下 Scala 程序：
object Test extends App {
println(org.fusesource.jansi.internal.WindowsSupport.getConsoleMode)
}
当从 Msys2 中 运行 时，会产生以下错误：
java.lang.UnsatisfiedLinkError: Could not load library. Reasons: [no jansi in java.library.path]
at org.fusesource.hawtjni.runtime.Library.doLoad(Library.java:182)
at org.fusesource.hawtjni.runtime.Library.load(Library.java:140)
at org.fusesource.jansi.internal.Kernel32.<clinit>(Kernel32.java:37)
at org.fusesource.jansi.internal.WindowsSupport.getConsoleMode(WindowsSupport.java:50)
at Test$.delayedEndpoint$Test(Test.scala:5)
at Test$delayedInit$body.apply(Test.scala:1)
at scala.Function0$class.apply$mcV$sp(Function0.scala:34)
at scala.runtime.AbstractFunction0.apply$mcV$sp(AbstractFunction0.scala:12)
at scala.App$$anonfun$main.apply(App.scala:76)
at scala.App$$anonfun$main.apply(App.scala:76)
at scala.collection.immutable.List.foreach(List.scala:381)
at scala.collection.generic.TraversableForwarder$class.foreach(TraversableForwarder.scala:35)
at scala.App$class.main(App.scala:76)
at Test$.main(Test.scala:1)
at Test.main(Test.scala)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at scala.reflect.internal.util.ScalaClassLoader$$anonfun$run.apply(ScalaClassLoader.scala:70)
at scala.reflect.internal.util.ScalaClassLoader$class.asContext(ScalaClassLoader.scala:31)
at scala.reflect.internal.util.ScalaClassLoader$URLClassLoader.asContext(ScalaClassLoader.scala:101)
at scala.reflect.internal.util.ScalaClassLoader$class.run(ScalaClassLoader.scala:70)
at scala.reflect.internal.util.ScalaClassLoader$URLClassLoader.run(ScalaClassLoader.scala:101)
at scala.tools.nsc.CommonRunner$class.run(ObjectRunner.scala:22)
at scala.tools.nsc.ObjectRunner$.run(ObjectRunner.scala:39)
at scala.tools.nsc.CommonRunner$class.runAndCatch(ObjectRunner.scala:29)
at scala.tools.nsc.ObjectRunner$.runAndCatch(ObjectRunner.scala:39)
at scala.tools.nsc.MainGenericRunner.runTarget(MainGenericRunner.scala:65)
at scala.tools.nsc.MainGenericRunner.run(MainGenericRunner.scala:87)
at scala.tools.nsc.MainGenericRunner.process(MainGenericRunner.scala:98)
at scala.tools.nsc.MainGenericRunner$.main(MainGenericRunner.scala:103)
at scala.tools.nsc.MainGenericRunner.main(MainGenericRunner.scala)
我试过但没有用：
- 互联网上的一些帖子提到它可能是由于缺少 VC2008 运行时间造成的，所以我确保我同时拥有 x64 和 x86。
- 正在从 scala/lib/jline-2.12.1.jar 中提取 jansi.dll 并将其放入我的工作目录（java.library.path 中包含“.”）。
- 从一个全新的 MSys2 主目录开始。
- 运行ning bash --login -i from cmd.exe （运行ning scala 时同样的错误）
- 尝试 32 位和 64 位 JRE
还有一点：这个问题不影响sbt；例如，运行ning "sbt console" 给了我一个工作的 Scala 命令行，尽管版本是 2.10.4。
问题是由于 scala/bin 目录中的 scala shell 脚本与同一目录中的 scala.bat 之间的名称冲突引起的。 Msys2 运行 shell 脚本，而 cmd.exe 运行批处理文件。显然，shell 脚本不适合 Msys2，这导致了我看到的错误。从 MSys2 发出 cmd //c scala.bat 会生成功能正常的 Scala 命令行。
编辑 scala shell 脚本以支持 MSys2 也很简单： https://gist.github.com/kirillkh/a9ba2e00ef2e901f13bf
我已经在 GitHub 上打开了一个包含此更改的拉取请求：https://github.com/scala/scala/pull/4674